ports/76827: [Maintainer/security] www/squid: fix buffer overflow in WCCP

Sat Jan 29 20:10:20 UTC 2005

>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">
	According to the Squid Proxy Cache Security Update Advisory SQUID-2005:3,
	<blockquote cite="http://www.squid-cache.org/Advisories/SQUID-2005_3.txt">
	 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.
	 Severity:
	 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.
	 Sites that do not use WCCP are not vulnerable.
	</blockquote>
	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.
 </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 at netcologne.de
	


>Release-Note:
>Audit-Trail:
>Unformatted:

