Date: 29 Jan 2005 20:05:31 -0000 From: Thomas-Martin Seck <tmseck@netcologne.de> To: FreeBSD-gnats-submit@FreeBSD.org Cc: security-team@tmseck.homedns.org Subject: ports/76827: [Maintainer/security] www/squid: fix buffer overflow in WCCP Message-ID: <20050129200531.29413.qmail@laurel.tmseck.homedns.org> Resent-Message-ID: <200501292010.j0TKAJQW007945@freefall.freebsd.org>
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>Number: 76827 >Category: ports >Synopsis: [Maintainer/security] www/squid: fix buffer overflow in WCCP >Confidential: no >Severity: serious >Priority: high >Responsible: freebsd-ports-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: maintainer-update >Submitter-Id: current-users >Arrival-Date: Sat Jan 29 20:10:19 GMT 2005 >Closed-Date: >Last-Modified: >Originator: Thomas-Martin Seck >Release: FreeBSD 4.11-STABLE i386 >Organization: a private site in Germany >Environment: FreeBSD ports collection as of Jan 29, 2005. >Description: Integrate a vendor patch against a buffer overflow in the WCCP handling, see <http://www.squid-cache.org/Versions/v2/2.5/bugs/#squid-2.5.STABLE7-wccp_buffer_overflow> and <http://www.squid-cache.org/Advisories/SQUID-2005_3.txt>. Security Team CC'ed, proposed VuXML data, entry date left to be filled in: <vuln vid="23fb5a04-722b-11d9-9e1e-c296ac722cb3"> <topic>squid -- buffer overflow in WCCP recvfrom() call</topic> <affects> <package> <name>squid</name> <range><lt>2.5.7_10</lt></range> </package> </affects> <description> <body xmlns="http://www.w3.org/1999/xhtml"> <p>According to the Squid Proxy Cache Security Update Advisory SQUID-2005:3,</p> <blockquote cite="http://www.squid-cache.org/Advisories/SQUID-2005_3.txt"> <p>The WCCP recvfrom() call accepts more data than will fit in the allocated buffer. An attacker may send a larger-than-normal WCCP message to Squid and overflow this buffer.</p> <p>Severity:</p> <p>The bug is important because it allows remote attackers to crash Squid, causing a disription in service. However, the bug is exploitable only if you have configured Squid to send WCCP messages to, and expect WCCP replies from, a router.</p> <p>Sites that do not use WCCP are not vulnerable.</p> </blockquote> <p>Note that while the default configuration of the FreeBSD squid port enables WCCP support in general, the default configuration supplied does not actually configure squid to send and receive WCCP messages.</p> </body> </description> <references> <url>http://www.squid-cache.org/Advisories/SQUID-2005_3.txt</url> <url>http://www.squid-cache.org/Versions/v2/2.5/bugs/#squid-2.5.STABLE7-wccp_buffer_overflow</url> <url>http://www.squid-cache.org/bugs/show_bug.cgi?id=1217</url> </references> <dates> <discovery>2005-01-28</discovery> <entry></entry> </dates> </vuln> >How-To-Repeat: >Fix: Apply this patch: Index: distinfo =================================================================== --- distinfo (.../www/squid) (revision 371) +++ distinfo (.../local/squid) (revision 371) @@ -44,3 +44,5 @@ SIZE (squid2.5/squid-2.5.STABLE7-short_icons_urls.patch) = 704 MD5 (squid2.5/squid-2.5.STABLE7-response_splitting.patch) = ff3d8ae3e933817c91e745beba76b5fc SIZE (squid2.5/squid-2.5.STABLE7-response_splitting.patch) = 9782 +MD5 (squid2.5/squid-2.5.STABLE7-wccp_buffer_overflow.patch) = 01b1a4a23f170723d7e2bc3846e12c73 +SIZE (squid2.5/squid-2.5.STABLE7-wccp_buffer_overflow.patch) = 505 Index: Makefile =================================================================== --- Makefile (.../www/squid) (revision 371) +++ Makefile (.../local/squid) (revision 371) @@ -74,7 +74,7 @@ PORTNAME= squid PORTVERSION= 2.5.7 -PORTREVISION= 9 +PORTREVISION= 10 CATEGORIES= www MASTER_SITES= \ ftp://ftp.squid-cache.org/pub/%SUBDIR%/ \ @@ -108,7 +108,8 @@ squid-2.5.STABLE7-httpd_accel_no_pmtu_disc.patch \ squid-2.5.STABLE7-ftp_datachannel.patch \ squid-2.5.STABLE7-short_icons_urls.patch \ - squid-2.5.STABLE7-response_splitting.patch + squid-2.5.STABLE7-response_splitting.patch \ + squid-2.5.STABLE7-wccp_buffer_overflow.patch PATCH_DIST_STRIP= -p1 MAINTAINER= tmseck@netcologne.de >Release-Note: >Audit-Trail: >Unformatted:
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