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8 commits

Author SHA1 Message Date
Jan Macku
ee3d189853 Resolves: CVE-2024-2398 - HTTP/2 push headers memory-leak 2024-04-12 15:00:27 +02:00
Jan Macku
e97fa5aa57 Resolves: CVE-2024-2004 - Usage of disabled protocol 2024-04-03 15:09:46 +02:00
Jan Macku
7fba058121 Resolves: CVE-2023-46219 - HSTS long file name clears contents 2023-12-06 14:26:00 +01:00
Jan Macku
5ef34fcaaf Resolves: CVE-2023-46218 - cookie mixed case PSL bypass 2023-12-06 14:25:53 +01:00
Jan Macku
090687748e Resolves: CVE-2023-38546 - cookie injection with none file 2023-10-11 16:29:04 +02:00
Jan Macku
12e5c7dfbb Resolves: CVE-2023-38545 - SOCKS5 heap buffer overflow 2023-10-11 16:26:29 +02:00
Lukáš Zaoral
e8a6b6ab33
tests: use newer Fedora URLs for testing
... because F36 URLs are no longer available.
2023-10-09 10:42:42 +02:00
Jan Macku
897deaff42 Resolves: CVE-2023-38039 - fix HTTP headers eat all memory 2023-09-13 13:32:33 +02:00
9 changed files with 950 additions and 5 deletions

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From 831c077c6d3a9466417f8a7b310177fca946a4cc Mon Sep 17 00:00:00 2001
From: Daniel Stenberg <daniel@haxx.se>
Date: Wed, 2 Aug 2023 23:34:48 +0200
Subject: [PATCH] http: return error when receiving too large header set
To avoid abuse. The limit is set to 300 KB for the accumulated size of
all received HTTP headers for a single response. Incomplete research
suggests that Chrome uses a 256-300 KB limit, while Firefox allows up to
1MB.
Closes #11582
(cherry picked from commit 3ee79c1674fd6f99e8efca52cd7510e08b766770)
Signed-off-by: Jan Macku <jamacku@redhat.com>
---
lib/c-hyper.c | 12 +++++++-----
lib/cf-h1-proxy.c | 4 +++-
lib/http.c | 34 ++++++++++++++++++++++++++++++----
lib/http.h | 9 +++++++++
lib/pingpong.c | 4 +++-
lib/urldata.h | 17 ++++++++---------
6 files changed, 60 insertions(+), 20 deletions(-)
diff --git a/lib/c-hyper.c b/lib/c-hyper.c
index c29983c0b..0b9d9ab47 100644
--- a/lib/c-hyper.c
+++ b/lib/c-hyper.c
@@ -182,8 +182,11 @@ static int hyper_each_header(void *userdata,
}
}
- data->info.header_size += (curl_off_t)len;
- data->req.headerbytecount += (curl_off_t)len;
+ result = Curl_bump_headersize(data, len, FALSE);
+ if(result) {
+ data->state.hresult = result;
+ return HYPER_ITER_BREAK;
+ }
return HYPER_ITER_CONTINUE;
}
@@ -313,9 +316,8 @@ static CURLcode status_line(struct Curl_easy *data,
if(result)
return result;
}
- data->info.header_size += (curl_off_t)len;
- data->req.headerbytecount += (curl_off_t)len;
- return CURLE_OK;
+ result = Curl_bump_headersize(data, len, FALSE);
+ return result;
}
/*
diff --git a/lib/cf-h1-proxy.c b/lib/cf-h1-proxy.c
index c9b157c9b..b1d8cb618 100644
--- a/lib/cf-h1-proxy.c
+++ b/lib/cf-h1-proxy.c
@@ -587,7 +587,9 @@ static CURLcode recv_CONNECT_resp(struct Curl_cfilter *cf,
return result;
}
- data->info.header_size += (long)perline;
+ result = Curl_bump_headersize(data, perline, TRUE);
+ if(result)
+ return result;
/* Newlines are CRLF, so the CR is ignored as the line isn't
really terminated until the LF comes. Treat a following CR
diff --git a/lib/http.c b/lib/http.c
index e611d2789..ebf48660d 100644
--- a/lib/http.c
+++ b/lib/http.c
@@ -3918,6 +3918,29 @@ static CURLcode verify_header(struct Curl_easy *data)
return CURLE_OK;
}
+CURLcode Curl_bump_headersize(struct Curl_easy *data,
+ size_t delta,
+ bool connect_only)
+{
+ size_t bad = 0;
+ if(delta < MAX_HTTP_RESP_HEADER_SIZE) {
+ if(!connect_only)
+ data->req.headerbytecount += (unsigned int)delta;
+ data->info.header_size += (unsigned int)delta;
+ if(data->info.header_size > MAX_HTTP_RESP_HEADER_SIZE)
+ bad = data->info.header_size;
+ }
+ else
+ bad = data->info.header_size + delta;
+ if(bad) {
+ failf(data, "Too large response headers: %zu > %zu",
+ bad, MAX_HTTP_RESP_HEADER_SIZE);
+ return CURLE_RECV_ERROR;
+ }
+ return CURLE_OK;
+}
+
+
/*
* Read any HTTP header lines from the server and pass them to the client app.
*/
@@ -4165,8 +4188,9 @@ CURLcode Curl_http_readwrite_headers(struct Curl_easy *data,
if(result)
return result;
- data->info.header_size += (long)headerlen;
- data->req.headerbytecount += (long)headerlen;
+ result = Curl_bump_headersize(data, headerlen, FALSE);
+ if(result)
+ return result;
/*
* When all the headers have been parsed, see if we should give
@@ -4488,8 +4512,10 @@ CURLcode Curl_http_readwrite_headers(struct Curl_easy *data,
if(result)
return result;
- data->info.header_size += Curl_dyn_len(&data->state.headerb);
- data->req.headerbytecount += Curl_dyn_len(&data->state.headerb);
+ result = Curl_bump_headersize(data, Curl_dyn_len(&data->state.headerb),
+ FALSE);
+ if(result)
+ return result;
Curl_dyn_reset(&data->state.headerb);
}
diff --git a/lib/http.h b/lib/http.h
index df3b4e38b..4aeabc345 100644
--- a/lib/http.h
+++ b/lib/http.h
@@ -64,6 +64,10 @@ extern const struct Curl_handler Curl_handler_wss;
struct dynhds;
+CURLcode Curl_bump_headersize(struct Curl_easy *data,
+ size_t delta,
+ bool connect_only);
+
/* Header specific functions */
bool Curl_compareheader(const char *headerline, /* line to check */
const char *header, /* header keyword _with_ colon */
@@ -183,6 +187,11 @@ CURLcode Curl_http_auth_act(struct Curl_easy *data);
#define EXPECT_100_THRESHOLD (1024*1024)
#endif
+/* MAX_HTTP_RESP_HEADER_SIZE is the maximum size of all response headers
+ combined that libcurl allows for a single HTTP response, any HTTP
+ version. This count includes CONNECT response headers. */
+#define MAX_HTTP_RESP_HEADER_SIZE (300*1024)
+
#endif /* CURL_DISABLE_HTTP */
/****************************************************************************
diff --git a/lib/pingpong.c b/lib/pingpong.c
index f3f7cb93c..523bbec18 100644
--- a/lib/pingpong.c
+++ b/lib/pingpong.c
@@ -341,7 +341,9 @@ CURLcode Curl_pp_readresp(struct Curl_easy *data,
ssize_t clipamount = 0;
bool restart = FALSE;
- data->req.headerbytecount += (long)gotbytes;
+ result = Curl_bump_headersize(data, gotbytes, FALSE);
+ if(result)
+ return result;
pp->nread_resp += gotbytes;
for(i = 0; i < gotbytes; ptr++, i++) {
diff --git a/lib/urldata.h b/lib/urldata.h
index c45913b31..ddb2938d7 100644
--- a/lib/urldata.h
+++ b/lib/urldata.h
@@ -629,17 +629,16 @@ struct SingleRequest {
curl_off_t bytecount; /* total number of bytes read */
curl_off_t writebytecount; /* number of bytes written */
- curl_off_t headerbytecount; /* only count received headers */
- curl_off_t deductheadercount; /* this amount of bytes doesn't count when we
- check if anything has been transferred at
- the end of a connection. We use this
- counter to make only a 100 reply (without a
- following second response code) result in a
- CURLE_GOT_NOTHING error code */
-
curl_off_t pendingheader; /* this many bytes left to send is actually
header and not body */
struct curltime start; /* transfer started at this time */
+ unsigned int headerbytecount; /* only count received headers */
+ unsigned int deductheadercount; /* this amount of bytes doesn't count when
+ we check if anything has been transferred
+ at the end of a connection. We use this
+ counter to make only a 100 reply (without
+ a following second response code) result
+ in a CURLE_GOT_NOTHING error code */
enum {
HEADER_NORMAL, /* no bad header at all */
HEADER_PARTHEADER, /* part of the chunk is a bad header, the rest
@@ -1089,7 +1088,6 @@ struct PureInfo {
int httpversion; /* the http version number X.Y = X*10+Y */
time_t filetime; /* If requested, this is might get set. Set to -1 if the
time was unretrievable. */
- curl_off_t header_size; /* size of read header(s) in bytes */
curl_off_t request_size; /* the amount of bytes sent in the request(s) */
unsigned long proxyauthavail; /* what proxy auth types were announced */
unsigned long httpauthavail; /* what host auth types were announced */
@@ -1097,6 +1095,7 @@ struct PureInfo {
char *contenttype; /* the content type of the object */
char *wouldredirect; /* URL this would've been redirected to if asked to */
curl_off_t retry_after; /* info from Retry-After: header */
+ unsigned int header_size; /* size of read header(s) in bytes */
/* PureInfo members 'conn_primary_ip', 'conn_primary_port', 'conn_local_ip'
and, 'conn_local_port' are copied over from the connectdata struct in
--
2.41.0

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@ -0,0 +1,135 @@
From 6b313d6d3520eb4c7429723babd59dbb63681bcd Mon Sep 17 00:00:00 2001
From: Jay Satiro <raysatiro@yahoo.com>
Date: Wed, 11 Oct 2023 07:34:19 +0200
Subject: [PATCH 1/2] socks: return error if hostname too long for remote
resolve
Prior to this change the state machine attempted to change the remote
resolve to a local resolve if the hostname was longer than 255
characters. Unfortunately that did not work as intended and caused a
security issue.
Bug: https://curl.se/docs/CVE-2023-38545.html
(cherry picked from commit fb4415d8aee6c1045be932a34fe6107c2f5ed147)
Signed-off-by: Jan Macku <jamacku@redhat.com>
---
lib/socks.c | 8 +++---
tests/data/Makefile.inc | 2 +-
tests/data/test728 | 64 +++++++++++++++++++++++++++++++++++++++++
3 files changed, 69 insertions(+), 5 deletions(-)
create mode 100644 tests/data/test728
diff --git a/lib/socks.c b/lib/socks.c
index c492d663c..a7b5ab07e 100644
--- a/lib/socks.c
+++ b/lib/socks.c
@@ -587,9 +587,9 @@ static CURLproxycode do_SOCKS5(struct Curl_cfilter *cf,
/* RFC1928 chapter 5 specifies max 255 chars for domain name in packet */
if(!socks5_resolve_local && hostname_len > 255) {
- infof(data, "SOCKS5: server resolving disabled for hostnames of "
- "length > 255 [actual len=%zu]", hostname_len);
- socks5_resolve_local = TRUE;
+ failf(data, "SOCKS5: the destination hostname is too long to be "
+ "resolved remotely by the proxy.");
+ return CURLPX_LONG_HOSTNAME;
}
if(auth & ~(CURLAUTH_BASIC | CURLAUTH_GSSAPI))
@@ -903,7 +903,7 @@ CONNECT_RESOLVE_REMOTE:
}
else {
socksreq[len++] = 3;
- socksreq[len++] = (char) hostname_len; /* one byte address length */
+ socksreq[len++] = (unsigned char) hostname_len; /* one byte length */
memcpy(&socksreq[len], sx->hostname, hostname_len); /* w/o NULL */
len += hostname_len;
}
diff --git a/tests/data/Makefile.inc b/tests/data/Makefile.inc
index a253b5c6e..cd22f937f 100644
--- a/tests/data/Makefile.inc
+++ b/tests/data/Makefile.inc
@@ -100,7 +100,7 @@ test679 test680 test681 test682 test683 test684 test685 test686 \
\
test700 test701 test702 test703 test704 test705 test706 test707 test708 \
test709 test710 test711 test712 test713 test714 test715 test716 test717 \
-test718 test719 test720 test721 \
+test718 test719 test720 test721 test728 \
\
test799 test800 test801 test802 test803 test804 test805 test806 test807 \
test808 test809 test810 test811 test812 test813 test814 test815 test816 \
diff --git a/tests/data/test728 b/tests/data/test728
new file mode 100644
index 000000000..05bcf2883
--- /dev/null
+++ b/tests/data/test728
@@ -0,0 +1,64 @@
+<testcase>
+<info>
+<keywords>
+HTTP
+HTTP GET
+SOCKS5
+SOCKS5h
+followlocation
+</keywords>
+</info>
+
+#
+# Server-side
+<reply>
+# The hostname in this redirect is 256 characters and too long (> 255) for
+# SOCKS5 remote resolve. curl must return error CURLE_PROXY in this case.
+<data>
+HTTP/1.1 301 Moved Permanently
+Location: http://AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA/
+Content-Length: 0
+Connection: close
+
+</data>
+</reply>
+
+#
+# Client-side
+<client>
+<features>
+proxy
+</features>
+<server>
+http
+socks5
+</server>
+ <name>
+SOCKS5h with HTTP redirect to hostname too long
+ </name>
+ <command>
+--no-progress-meter --location --proxy socks5h://%HOSTIP:%SOCKSPORT http://%HOSTIP:%HTTPPORT/%TESTNUMBER
+</command>
+</client>
+
+#
+# Verify data after the test has been "shot"
+<verify>
+<protocol crlf="yes">
+GET /%TESTNUMBER HTTP/1.1
+Host: %HOSTIP:%HTTPPORT
+User-Agent: curl/%VERSION
+Accept: */*
+
+</protocol>
+<errorcode>
+97
+</errorcode>
+# the error message is verified because error code CURLE_PROXY (97) may be
+# returned for any number of reasons and we need to make sure it is
+# specifically for the reason below so that we know the check is working.
+<stderr mode="text">
+curl: (97) SOCKS5: the destination hostname is too long to be resolved remotely by the proxy.
+</stderr>
+</verify>
+</testcase>
--
2.41.0

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From 9b837dd18c44bedf28054ba498e94740e1533d69 Mon Sep 17 00:00:00 2001
From: Daniel Stenberg <daniel@haxx.se>
Date: Thu, 14 Sep 2023 23:28:32 +0200
Subject: [PATCH 2/2] cookie: remove unnecessary struct fields
Plus: reduce the hash table size from 256 to 63. It seems unlikely to
make much of a speed difference for most use cases but saves 1.5KB of
data per instance.
Closes #11862
(cherry picked from commit 61275672b46d9abb3285740467b882e22ed75da8)
Signed-off-by: Jan Macku <jamacku@redhat.com>
---
lib/cookie.c | 13 +------------
lib/cookie.h | 13 ++++---------
lib/easy.c | 4 +---
3 files changed, 6 insertions(+), 24 deletions(-)
diff --git a/lib/cookie.c b/lib/cookie.c
index 4345a84c6..e39c89a94 100644
--- a/lib/cookie.c
+++ b/lib/cookie.c
@@ -119,7 +119,6 @@ static void freecookie(struct Cookie *co)
free(co->name);
free(co->value);
free(co->maxage);
- free(co->version);
free(co);
}
@@ -718,11 +717,7 @@ Curl_cookie_add(struct Curl_easy *data,
}
}
else if((nlen == 7) && strncasecompare("version", namep, 7)) {
- strstore(&co->version, valuep, vlen);
- if(!co->version) {
- badcookie = TRUE;
- break;
- }
+ /* just ignore */
}
else if((nlen == 7) && strncasecompare("max-age", namep, 7)) {
/*
@@ -1160,7 +1155,6 @@ Curl_cookie_add(struct Curl_easy *data,
free(clist->path);
free(clist->spath);
free(clist->expirestr);
- free(clist->version);
free(clist->maxage);
*clist = *co; /* then store all the new data */
@@ -1224,9 +1218,6 @@ struct CookieInfo *Curl_cookie_init(struct Curl_easy *data,
c = calloc(1, sizeof(struct CookieInfo));
if(!c)
return NULL; /* failed to get memory */
- c->filename = strdup(file?file:"none"); /* copy the name just in case */
- if(!c->filename)
- goto fail; /* failed to get memory */
/*
* Initialize the next_expiration time to signal that we don't have enough
* information yet.
@@ -1378,7 +1369,6 @@ static struct Cookie *dup_cookie(struct Cookie *src)
CLONE(name);
CLONE(value);
CLONE(maxage);
- CLONE(version);
d->expires = src->expires;
d->tailmatch = src->tailmatch;
d->secure = src->secure;
@@ -1595,7 +1585,6 @@ void Curl_cookie_cleanup(struct CookieInfo *c)
{
if(c) {
unsigned int i;
- free(c->filename);
for(i = 0; i < COOKIE_HASH_SIZE; i++)
Curl_cookie_freelist(c->cookies[i]);
free(c); /* free the base struct as well */
diff --git a/lib/cookie.h b/lib/cookie.h
index b3c0063b2..41e9e7a69 100644
--- a/lib/cookie.h
+++ b/lib/cookie.h
@@ -36,11 +36,7 @@ struct Cookie {
char *domain; /* domain = <this> */
curl_off_t expires; /* expires = <this> */
char *expirestr; /* the plain text version */
-
- /* RFC 2109 keywords. Version=1 means 2109-compliant cookie sending */
- char *version; /* Version = <value> */
char *maxage; /* Max-Age = <value> */
-
bool tailmatch; /* whether we do tail-matching of the domain name */
bool secure; /* whether the 'secure' keyword was used */
bool livecookie; /* updated from a server, not a stored file */
@@ -56,17 +52,16 @@ struct Cookie {
#define COOKIE_PREFIX__SECURE (1<<0)
#define COOKIE_PREFIX__HOST (1<<1)
-#define COOKIE_HASH_SIZE 256
+#define COOKIE_HASH_SIZE 63
struct CookieInfo {
/* linked list of cookies we know of */
struct Cookie *cookies[COOKIE_HASH_SIZE];
- char *filename; /* file we read from/write to */
- long numcookies; /* number of cookies in the "jar" */
+ curl_off_t next_expiration; /* the next time at which expiration happens */
+ int numcookies; /* number of cookies in the "jar" */
+ int lastct; /* last creation-time used in the jar */
bool running; /* state info, for cookie adding information */
bool newsession; /* new session, discard session cookies on load */
- int lastct; /* last creation-time used in the jar */
- curl_off_t next_expiration; /* the next time at which expiration happens */
};
/* The maximum sizes we accept for cookies. RFC 6265 section 6.1 says
diff --git a/lib/easy.c b/lib/easy.c
index d034629b5..2c621963d 100644
--- a/lib/easy.c
+++ b/lib/easy.c
@@ -909,9 +909,7 @@ struct Curl_easy *curl_easy_duphandle(struct Curl_easy *data)
if(data->cookies) {
/* If cookies are enabled in the parent handle, we enable them
in the clone as well! */
- outcurl->cookies = Curl_cookie_init(data,
- data->cookies->filename,
- outcurl->cookies,
+ outcurl->cookies = Curl_cookie_init(data, NULL, outcurl->cookies,
data->set.cookiesession);
if(!outcurl->cookies)
goto fail;
--
2.41.0

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@ -0,0 +1,55 @@
From 053b0d4eb6768563adc55fa936bbb32d19114d49 Mon Sep 17 00:00:00 2001
From: Daniel Stenberg <daniel@haxx.se>
Date: Thu, 23 Nov 2023 08:15:47 +0100
Subject: [PATCH 1/2] cookie: lowercase the domain names before PSL checks
Reported-by: Harry Sintonen
Closes #12387
(cherry picked from commit 2b0994c29a721c91c572cff7808c572a24d251eb)
Signed-off-by: Jan Macku <jamacku@redhat.com>
---
lib/cookie.c | 24 ++++++++++++++++--------
1 file changed, 16 insertions(+), 8 deletions(-)
diff --git a/lib/cookie.c b/lib/cookie.c
index e39c89a94..18ed4bb7e 100644
--- a/lib/cookie.c
+++ b/lib/cookie.c
@@ -1036,15 +1036,23 @@ Curl_cookie_add(struct Curl_easy *data,
* dereference it.
*/
if(data && (domain && co->domain && !Curl_host_is_ipnum(co->domain))) {
- const psl_ctx_t *psl = Curl_psl_use(data);
- int acceptable;
-
- if(psl) {
- acceptable = psl_is_cookie_domain_acceptable(psl, domain, co->domain);
- Curl_psl_release(data);
+ bool acceptable = FALSE;
+ char lcase[256];
+ char lcookie[256];
+ size_t dlen = strlen(domain);
+ size_t clen = strlen(co->domain);
+ if((dlen < sizeof(lcase)) && (clen < sizeof(lcookie))) {
+ const psl_ctx_t *psl = Curl_psl_use(data);
+ if(psl) {
+ /* the PSL check requires lowercase domain name and pattern */
+ Curl_strntolower(lcase, domain, dlen + 1);
+ Curl_strntolower(lcookie, co->domain, clen + 1);
+ acceptable = psl_is_cookie_domain_acceptable(psl, lcase, lcookie);
+ Curl_psl_release(data);
+ }
+ else
+ acceptable = !bad_domain(domain, strlen(domain));
}
- else
- acceptable = !bad_domain(domain, strlen(domain));
if(!acceptable) {
infof(data, "cookie '%s' dropped, domain '%s' must not "
--
2.43.0

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@ -0,0 +1,134 @@
From cca676ef222399591f5a116e1c13889014fad624 Mon Sep 17 00:00:00 2001
From: Daniel Stenberg <daniel@haxx.se>
Date: Thu, 23 Nov 2023 08:23:17 +0100
Subject: [PATCH 2/2] fopen: create short(er) temporary file name
Only using random letters in the name plus a ".tmp" extension. Not by
appending characters to the final file name.
Reported-by: Maksymilian Arciemowicz
Closes #12388
(cherry picked from commit 73b65e94f3531179de45c6f3c836a610e3d0a846)
Signed-off-by: Jan Macku <jamacku@redhat.com>
---
lib/fopen.c | 65 ++++++++++++++++++++++++++++++++++++++++++++++++-----
1 file changed, 60 insertions(+), 5 deletions(-)
diff --git a/lib/fopen.c b/lib/fopen.c
index b6e3caddd..5cd4dde3e 100644
--- a/lib/fopen.c
+++ b/lib/fopen.c
@@ -39,6 +39,51 @@
#include "curl_memory.h"
#include "memdebug.h"
+/*
+ The dirslash() function breaks a null-terminated pathname string into
+ directory and filename components then returns the directory component up
+ to, *AND INCLUDING*, a final '/'. If there is no directory in the path,
+ this instead returns a "" string.
+
+ This function returns a pointer to malloc'ed memory.
+
+ The input path to this function is expected to have a file name part.
+*/
+
+#ifdef _WIN32
+#define PATHSEP "\\"
+#define IS_SEP(x) (((x) == '/') || ((x) == '\\'))
+#elif defined(MSDOS) || defined(__EMX__) || defined(OS2)
+#define PATHSEP "\\"
+#define IS_SEP(x) ((x) == '\\')
+#else
+#define PATHSEP "/"
+#define IS_SEP(x) ((x) == '/')
+#endif
+
+static char *dirslash(const char *path)
+{
+ size_t n;
+ struct dynbuf out;
+ DEBUGASSERT(path);
+ Curl_dyn_init(&out, CURL_MAX_INPUT_LENGTH);
+ n = strlen(path);
+ if(n) {
+ /* find the rightmost path separator, if any */
+ while(n && !IS_SEP(path[n-1]))
+ --n;
+ /* skip over all the path separators, if any */
+ while(n && IS_SEP(path[n-1]))
+ --n;
+ }
+ if(Curl_dyn_addn(&out, path, n))
+ return NULL;
+ /* if there was a directory, append a single trailing slash */
+ if(n && Curl_dyn_addn(&out, PATHSEP, 1))
+ return NULL;
+ return Curl_dyn_ptr(&out);
+}
+
/*
* Curl_fopen() opens a file for writing with a temp name, to be renamed
* to the final name when completed. If there is an existing file using this
@@ -50,25 +95,34 @@ CURLcode Curl_fopen(struct Curl_easy *data, const char *filename,
FILE **fh, char **tempname)
{
CURLcode result = CURLE_WRITE_ERROR;
- unsigned char randsuffix[9];
+ unsigned char randbuf[41];
char *tempstore = NULL;
struct_stat sb;
int fd = -1;
+ char *dir;
*tempname = NULL;
+ dir = dirslash(filename);
+ if(!dir)
+ goto fail;
+
*fh = fopen(filename, FOPEN_WRITETEXT);
if(!*fh)
goto fail;
- if(fstat(fileno(*fh), &sb) == -1 || !S_ISREG(sb.st_mode))
+ if(fstat(fileno(*fh), &sb) == -1 || !S_ISREG(sb.st_mode)) {
+ free(dir);
return CURLE_OK;
+ }
fclose(*fh);
*fh = NULL;
- result = Curl_rand_hex(data, randsuffix, sizeof(randsuffix));
+ result = Curl_rand_hex(data, randbuf, sizeof(randbuf));
if(result)
goto fail;
- tempstore = aprintf("%s.%s.tmp", filename, randsuffix);
+ /* The temp file name should not end up too long for the target file
+ system */
+ tempstore = aprintf("%s%s.tmp", dir, randbuf);
if(!tempstore) {
result = CURLE_OUT_OF_MEMORY;
goto fail;
@@ -95,6 +149,7 @@ CURLcode Curl_fopen(struct Curl_easy *data, const char *filename,
if(!*fh)
goto fail;
+ free(dir);
*tempname = tempstore;
return CURLE_OK;
@@ -105,7 +160,7 @@ fail:
}
free(tempstore);
-
+ free(dir);
return result;
}
--
2.43.0

View file

@ -0,0 +1,138 @@
From e614d4615943b9d43e4f6db8bc8223a20c66cd44 Mon Sep 17 00:00:00 2001
From: Daniel Gustafsson <daniel@yesql.se>
Date: Tue, 27 Feb 2024 15:43:56 +0100
Subject: [PATCH 1/2] setopt: Fix disabling all protocols
When disabling all protocols without enabling any, the resulting
set of allowed protocols remained the default set. Clearing the
allowed set before inspecting the passed value from --proto make
the set empty even in the errorpath of no protocols enabled.
Co-authored-by: Dan Fandrich <dan@telarity.com>
Reported-by: Dan Fandrich <dan@telarity.com>
Reviewed-by: Daniel Stenberg <daniel@haxx.se>
Closes: #13004
(cherry picked from commit 17d302e56221f5040092db77d4f85086e8a20e0e)
Signed-off-by: Jan Macku <jamacku@redhat.com>
---
lib/setopt.c | 16 ++++++++--------
tests/data/Makefile.inc | 1 +
tests/data/test1474 | 42 +++++++++++++++++++++++++++++++++++++++++
3 files changed, 51 insertions(+), 8 deletions(-)
create mode 100644 tests/data/test1474
diff --git a/lib/setopt.c b/lib/setopt.c
index b05162a55..fb71b7fd4 100644
--- a/lib/setopt.c
+++ b/lib/setopt.c
@@ -154,6 +154,12 @@ static CURLcode setstropt_userpwd(char *option, char **userp, char **passwdp)
static CURLcode protocol2num(const char *str, curl_prot_t *val)
{
+ /*
+ * We are asked to cherry-pick protocols, so play it safe and disallow all
+ * protocols to start with, and re-add the wanted ones back in.
+ */
+ *val = 0;
+
if(!str)
return CURLE_BAD_FUNCTION_ARGUMENT;
@@ -162,8 +168,6 @@ static CURLcode protocol2num(const char *str, curl_prot_t *val)
return CURLE_OK;
}
- *val = 0;
-
do {
const char *token = str;
size_t tlen;
@@ -2679,22 +2683,18 @@ CURLcode Curl_vsetopt(struct Curl_easy *data, CURLoption option, va_list param)
break;
case CURLOPT_PROTOCOLS_STR: {
- curl_prot_t prot;
argptr = va_arg(param, char *);
- result = protocol2num(argptr, &prot);
+ result = protocol2num(argptr, &data->set.allowed_protocols);
if(result)
return result;
- data->set.allowed_protocols = prot;
break;
}
case CURLOPT_REDIR_PROTOCOLS_STR: {
- curl_prot_t prot;
argptr = va_arg(param, char *);
- result = protocol2num(argptr, &prot);
+ result = protocol2num(argptr, &data->set.redir_protocols);
if(result)
return result;
- data->set.redir_protocols = prot;
break;
}
diff --git a/tests/data/Makefile.inc b/tests/data/Makefile.inc
index cd22f937f..da0e8bb0a 100644
--- a/tests/data/Makefile.inc
+++ b/tests/data/Makefile.inc
@@ -160,6 +160,7 @@ test1247 test1248 test1249 test1250 test1251 test1252 test1253 test1254 \
test1255 test1256 test1257 test1258 test1259 test1260 test1261 test1262 \
test1263 test1264 test1265 test1266 test1267 test1268 test1269 test1270 \
test1271 test1272 test1273 test1274 test1275 test1276 test1277 test1278 \
+test1474 \
\
test1280 test1281 test1282 test1283 test1284 test1285 test1286 test1287 \
test1288 test1289 test1290 test1291 test1292 test1293 test1294 test1295 \
diff --git a/tests/data/test1474 b/tests/data/test1474
new file mode 100644
index 000000000..c66fa2810
--- /dev/null
+++ b/tests/data/test1474
@@ -0,0 +1,42 @@
+<testcase>
+<info>
+<keywords>
+HTTP
+HTTP GET
+--proto
+</keywords>
+</info>
+
+#
+# Server-side
+<reply>
+<data>
+</data>
+</reply>
+
+#
+# Client-side
+<client>
+<server>
+none
+</server>
+<features>
+http
+</features>
+<name>
+--proto -all disables all protocols
+</name>
+<command>
+--proto -all http://%HOSTIP:%NOLISTENPORT/%TESTNUMBER
+</command>
+</client>
+
+#
+# Verify data after the test has been "shot"
+<verify>
+# 1 - Protocol "http" disabled
+<errorcode>
+1
+</errorcode>
+</verify>
+</testcase>
--
2.44.0

View file

@ -0,0 +1,95 @@
From d8c8695a7d10c21c0fb5b871b032716ca9683903 Mon Sep 17 00:00:00 2001
From: Stefan Eissing <stefan@eissing.org>
Date: Wed, 6 Mar 2024 09:36:08 +0100
Subject: [PATCH] http2: push headers better cleanup
- provide common cleanup method for push headers
Closes #13054
(cherry picked from commit deca8039991886a559b67bcd6701db800a5cf764)
Signed-off-by: Jan Macku <jamacku@redhat.com>
---
lib/http2.c | 34 +++++++++++++++-------------------
1 file changed, 15 insertions(+), 19 deletions(-)
diff --git a/lib/http2.c b/lib/http2.c
index 6c09ec1..533237d 100644
--- a/lib/http2.c
+++ b/lib/http2.c
@@ -267,6 +267,15 @@ static CURLcode http2_data_setup(struct Curl_cfilter *cf,
return CURLE_OK;
}
+static void free_push_headers(struct stream_ctx *stream)
+{
+ size_t i;
+ for(i = 0; i<stream->push_headers_used; i++)
+ free(stream->push_headers[i]);
+ Curl_safefree(stream->push_headers);
+ stream->push_headers_used = 0;
+}
+
static void http2_data_done(struct Curl_cfilter *cf,
struct Curl_easy *data, bool premature)
{
@@ -313,15 +322,7 @@ static void http2_data_done(struct Curl_cfilter *cf,
Curl_bufq_free(&stream->sendbuf);
Curl_bufq_free(&stream->recvbuf);
Curl_dynhds_free(&stream->resp_trailers);
- if(stream->push_headers) {
- /* if they weren't used and then freed before */
- for(; stream->push_headers_used > 0; --stream->push_headers_used) {
- free(stream->push_headers[stream->push_headers_used - 1]);
- }
- free(stream->push_headers);
- stream->push_headers = NULL;
- }
-
+ free_push_headers(stream);
free(stream);
H2_STREAM_LCTX(data) = NULL;
}
@@ -859,7 +860,6 @@ static int push_promise(struct Curl_cfilter *cf,
struct curl_pushheaders heads;
CURLMcode rc;
CURLcode result;
- size_t i;
/* clone the parent */
struct Curl_easy *newhandle = h2_duphandle(cf, data);
if(!newhandle) {
@@ -904,11 +904,7 @@ static int push_promise(struct Curl_cfilter *cf,
Curl_set_in_callback(data, false);
/* free the headers again */
- for(i = 0; i<stream->push_headers_used; i++)
- free(stream->push_headers[i]);
- free(stream->push_headers);
- stream->push_headers = NULL;
- stream->push_headers_used = 0;
+ free_push_headers(stream);
if(rv) {
DEBUGASSERT((rv > CURL_PUSH_OK) && (rv <= CURL_PUSH_ERROROUT));
@@ -1357,14 +1353,14 @@ static int on_header(nghttp2_session *session, const nghttp2_frame *frame,
if(stream->push_headers_alloc > 1000) {
/* this is beyond crazy many headers, bail out */
failf(data_s, "Too many PUSH_PROMISE headers");
- Curl_safefree(stream->push_headers);
+ free_push_headers(stream);
return NGHTTP2_ERR_TEMPORAL_CALLBACK_FAILURE;
}
stream->push_headers_alloc *= 2;
- headp = Curl_saferealloc(stream->push_headers,
- stream->push_headers_alloc * sizeof(char *));
+ headp = realloc(stream->push_headers,
+ stream->push_headers_alloc * sizeof(char *));
if(!headp) {
- stream->push_headers = NULL;
+ free_push_headers(stream);
return NGHTTP2_ERR_TEMPORAL_CALLBACK_FAILURE;
}
stream->push_headers = headp;
--
2.44.0

View file

@ -1,7 +1,7 @@
Summary: A utility for getting files from remote servers (FTP, HTTP, and others)
Name: curl
Version: 8.2.1
Release: 1%{?dist}
Release: 5%{?dist}
License: curl
Source0: https://curl.se/download/%{name}-%{version}.tar.xz
Source1: https://curl.se/download/%{name}-%{version}.tar.xz.asc
@ -10,6 +10,27 @@ Source1: https://curl.se/download/%{name}-%{version}.tar.xz.asc
# which points to the GPG key as of April 7th 2016 of https://daniel.haxx.se/mykey.asc
Source2: mykey.asc
# fix HTTP headers eat all memory (CVE-2023-38039)
Patch1: 0001-curl-8.2.1-CVE-2023-38039.patch
# fix SOCKS5 heap buffer overflow (CVE-2023-38545)
Patch2: 0002-curl-8.2.1-CVE-2023-38545.patch
# fix cookie injection with none file (CVE-2023-38546)
Patch3: 0003-curl-8.2.1-CVE-2023-38546.patch
# fix cookie mixed case PSL bypass (CVE-2023-46218)
Patch4: 0004-curl-8.2.1-CVE-2023-46218.patch
# fix HSTS long file name clears contents (CVE-2023-46219)
Patch5: 0005-curl-8.2.1-CVE-2023-46219.patch
# fix Usage of disabled protocol (CVE-2024-2004)
Patch6: 0006-curl-8.2.1-CVE-2024-2004.patch
# fix HTTP/2 push headers memory-leak
Patch7: 0007-curl-8.2.1-CVE-2024-2398.patch
# patch making libcurl multilib ready
Patch101: 0101-curl-7.32.0-multilib.patch
@ -206,9 +227,10 @@ be installed.
%{gpgverify} --keyring='%{SOURCE2}' --signature='%{SOURCE1}' --data='%{SOURCE0}'
%autosetup -p1
# disable test 420
# disable test 1801
# <https://github.com/bagder/curl/commit/21e82bd6#commitcomment-12226582>
echo "1801" >> tests/data/DISABLED
printf "420\n1801\n" >> tests/data/DISABLED
# test3026: avoid pthread_create() failure due to resource exhaustion on i386
%ifarch %{ix86}
@ -408,6 +430,21 @@ rm -f ${RPM_BUILD_ROOT}%{_libdir}/libcurl.la
%{_libdir}/libcurl.so.4.[0-9].[0-9].minimal
%changelog
* Wed Apr 03 2024 Jan Macku <jamacku@redhat.com> - 8.2.1-5
- fix Usage of disabled protocol (CVE-2024-2004)
- fix HTTP/2 push headers memory-leak (CVE-2024-2398)
* Wed Dec 06 2023 Jan Macku <jamacku@redhat.com> - 8.2.1-4
- fix HSTS long file name clears contents (CVE-2023-46219)
- fix cookie mixed case PSL bypass (CVE-2023-46218)
* Wed Oct 11 2023 Jan Macku <jamacku@redhat.com> - 8.2.1-3
- fix cookie injection with none file (CVE-2023-38546)
- fix SOCKS5 heap buffer overflow (CVE-2023-38545)
* Wed Sep 13 2023 Jan Macku <jamacku@redhat.com> - 8.2.1-2
- fix HTTP headers eat all memory (CVE-2023-38039)
* Wed Jul 26 2023 Lukáš Zaoral <lzaoral@redhat.com> - 8.2.1-1
- new upstream release (rhbz#2226659)

View file

@ -31,9 +31,9 @@
PACKAGE="curl"
FTP_URL=ftp://ftp.fi.muni.cz/pub/linux/fedora/linux/releases/36/Everything/x86_64/iso/Fedora-Everything-36-1.5-x86_64-CHECKSUM
HTTP_URL=https://archives.fedoraproject.org/pub/fedora/linux/releases/36/Everything/x86_64/iso/Fedora-Everything-36-1.5-x86_64-CHECKSUM
CONTENT=85cb450443d68d513b41e57b0bd818a740279dac5dfc09c68e681ff8a3006404
FTP_URL=ftp://ftp.fi.muni.cz/pub/linux/fedora/linux/releases/38/Everything/x86_64/iso/Fedora-Everything-38-1.6-x86_64-CHECKSUM
HTTP_URL=https://archives.fedoraproject.org/pub/fedora/linux/releases/38/Everything/x86_64/iso/Fedora-Everything-38-1.6-x86_64-CHECKSUM
CONTENT=4d042dedc8886856db10bc882074b84dcce52f829ea7b3f31d8031db8d84df20
PASSWORD=pAssw0rd
OPTIONS=""
rlIsRHEL 7 && OPTIONS="--insecure"