From 59cad858140afb28006a12225201dd2a823793f3 Mon Sep 17 00:00:00 2001 From: root Date: Wed, 11 Oct 2023 19:15:15 +0800 Subject: [PATCH] fix CVE-2023-38545, CVE-2023-38546 --- backport-CVE-2023-38545.patch | 134 ++++++++++++++++++++++++++++++++++ backport-CVE-2023-38546.patch | 128 ++++++++++++++++++++++++++++++++ curl.spec | 10 ++- 3 files changed, 271 insertions(+), 1 deletion(-) create mode 100644 backport-CVE-2023-38545.patch create mode 100644 backport-CVE-2023-38546.patch diff --git a/backport-CVE-2023-38545.patch b/backport-CVE-2023-38545.patch new file mode 100644 index 0000000..c15c273 --- /dev/null +++ b/backport-CVE-2023-38545.patch @@ -0,0 +1,134 @@ +From 92fd36dd54de9ac845549944692eb33c5aee7343 Mon Sep 17 00:00:00 2001 +From: Jay Satiro +Date: Mon, 9 Oct 2023 17:15:44 -0400 +Subject: [PATCH] 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. + +This patch applies to curl versions 7.87.0 - 8.1.2. Other versions +that are affected take a different patch. Refer to the CVE advisory +for more information. + +Bug: https://curl.se/docs/CVE-2023-38545.html +--- + 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 d491e08..e7da5b4 100644 +--- a/lib/socks.c ++++ b/lib/socks.c +@@ -539,9 +539,9 @@ 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)) +@@ -882,7 +882,7 @@ static CURLproxycode do_SOCKS5(struct Curl_cfilter *cf, + } + 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 3e0221a..64b11de 100644 +--- a/tests/data/Makefile.inc ++++ b/tests/data/Makefile.inc +@@ -99,7 +99,7 @@ test679 test680 test681 test682 test683 test684 test685 \ + \ + 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 \ + \ + test800 test801 test802 test803 test804 test805 test806 test807 test808 \ + test809 test810 test811 test812 test813 test814 test815 test816 test817 \ +diff --git a/tests/data/test728 b/tests/data/test728 +new file mode 100644 +index 0000000..05bcf28 +--- /dev/null ++++ b/tests/data/test728 +@@ -0,0 +1,64 @@ ++ ++ ++ ++HTTP ++HTTP GET ++SOCKS5 ++SOCKS5h ++followlocation ++ ++ ++ ++# ++# Server-side ++ ++# 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. ++ ++HTTP/1.1 301 Moved Permanently ++Location: http://AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA/ ++Content-Length: 0 ++Connection: close ++ ++ ++ ++ ++# ++# Client-side ++ ++ ++proxy ++ ++ ++http ++socks5 ++ ++ ++SOCKS5h with HTTP redirect to hostname too long ++ ++ ++--no-progress-meter --location --proxy socks5h://%HOSTIP:%SOCKSPORT http://%HOSTIP:%HTTPPORT/%TESTNUMBER ++ ++ ++ ++# ++# Verify data after the test has been "shot" ++ ++ ++GET /%TESTNUMBER HTTP/1.1 ++Host: %HOSTIP:%HTTPPORT ++User-Agent: curl/%VERSION ++Accept: */* ++ ++ ++ ++97 ++ ++# 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. ++ ++curl: (97) SOCKS5: the destination hostname is too long to be resolved remotely by the proxy. ++ ++ ++ +-- +2.7.4 + diff --git a/backport-CVE-2023-38546.patch b/backport-CVE-2023-38546.patch new file mode 100644 index 0000000..e714a21 --- /dev/null +++ b/backport-CVE-2023-38546.patch @@ -0,0 +1,128 @@ +From 61275672b46d9abb3285740467b882e22ed75da8 Mon Sep 17 00:00:00 2001 +From: Daniel Stenberg +Date: Thu, 14 Sep 2023 23:28:32 +0200 +Subject: [PATCH] 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 +--- + 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 4345a84c6fd9d..e39c89a94a960 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 b3c0063b2cfb2..41e9e7a6914e0 100644 +--- a/lib/cookie.h ++++ b/lib/cookie.h +@@ -36,11 +36,7 @@ struct Cookie { + char *domain; /* domain = */ + curl_off_t expires; /* expires = */ + char *expirestr; /* the plain text version */ +- +- /* RFC 2109 keywords. Version=1 means 2109-compliant cookie sending */ +- char *version; /* Version = */ + char *maxage; /* Max-Age = */ +- + 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 16bbd35251d40..03195481f9780 100644 +--- a/lib/easy.c ++++ b/lib/easy.c +@@ -925,9 +925,7 @@ 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; diff --git a/curl.spec b/curl.spec index 93185f0..eeadf98 100644 --- a/curl.spec +++ b/curl.spec @@ -6,7 +6,7 @@ Name: curl Version: 8.1.2 -Release: 4 +Release: 5 Summary: Curl is used in command lines or scripts to transfer data License: curl URL: https://curl.se/ @@ -19,6 +19,8 @@ Patch5: backport-CVE-2023-32001.patch Patch6: backport-vtls-avoid-memory-leak-if-sha256-call-fails.patch Patch7: backport-urlapi-make-sure-zoneid-is-also-duplicated-in-curl_u.patch Patch8: backport-CVE-2023-38039.patch +Patch9: backport-CVE-2023-38545.patch +Patch10: backport-CVE-2023-38546.patch BuildRequires: automake brotli-devel coreutils gcc groff krb5-devel BuildRequires: libidn2-devel libnghttp2-devel libpsl-devel @@ -203,6 +205,12 @@ rm -rf ${RPM_BUILD_ROOT}%{_libdir}/libcurl.la %{_mandir}/man3/* %changelog +* Wed Oct 11 2023 Funda Wang - 8.1.2-5 +- Type:CVE +- CVE:CVE-2023-38545, CVE-2023-38546 +- SUG:NA +- DESC:fix CVE-2023-38545, CVE-2023-38546 + * Thu Sep 14 2023 gaihuiying - 8.1.2-4 - Type:CVE - CVE:CVE-2023-38039 -- Gitee