Bugzilla Bug 201209

Problem Description:

 Due to incorrect bounds checking Squid is vulnerable to
 a denial of service check during some cache update reply
 processing.

Severity:

 This problem allows any client trusted to use the service to
 perform a denial of service attack on the Squid service.

Updated Packages:

 This bug is fixed by Squid version 2.6.STABLE17 and by the November
 28 snapshots of Squid-2 and Squid-3.

 In addition, a patch addressing this problem can be found in
 our patch archive for version Squid-2.6:

  http://www.squid-cache.org/Versions/v2/2.6/changesets/11780.patch

 And for Squid-3:

  http://www.squid-cache.org/Versions/v3/3.0/changesets/11211.patch

 If you are using a prepackaged version of Squid then please refer
 to the package vendor for availability information on updated
 packages.

Reproducible: Always

maintainers - please provide an updated ebuild

I've added squid-2.6.17 to the tree and package masked version 3.0_rc1.

Arches, please test and mark stable net-proxy/squid-2.6.17.
Target keywords : "alpha amd64 hppa ia64 ppc ppc64 sparc x86"

ppc64 stable

ppc stable

x86 stable

Compiles, merges, and works on amd64.

emerge --info:

Portage 2.1.3.19 (default-linux/amd64/2007.0, gcc-4.1.2, glibc-2.6.1-r0,
2.6.22-gentoo-r9 x86_64)
=================================================================
System uname: 2.6.22-gentoo-r9 x86_64 Intel(R) Core(TM)2 CPU T7200 @ 2.00GHz
Timestamp of tree: Tue, 04 Dec 2007 23:30:01 +0000
app-shells/bash:     3.2_p17
dev-java/java-config: 1.3.7, 2.0.33-r1
dev-lang/python:     2.4.4-r6, 2.5.1-r4
dev-python/pycrypto: 2.0.1-r6
sys-apps/baselayout: 1.12.9-r2
sys-apps/sandbox:    1.2.18.1-r2
sys-devel/autoconf:  2.13, 2.61-r1
sys-devel/automake:  1.4_p6, 1.5, 1.6.3, 1.7.9-r1, 1.8.5-r3, 1.9.6-r2, 1.10
sys-devel/binutils:  2.18-r1
sys-devel/gcc-config: 1.3.16
sys-devel/libtool:   1.5.24
virtual/os-headers:  2.6.22-r2
ACCEPT_KEYWORDS="amd64"
CBUILD="x86_64-pc-linux-gnu"
CFLAGS="-O2 -pipe -fomit-frame-pointer -march=nocona"
CHOST="x86_64-pc-linux-gnu"
CONFIG_PROTECT="/etc /usr/share/X11/xkb"
CONFIG_PROTECT_MASK="/etc/env.d /etc/env.d/java/ /etc/fonts/fonts.conf
/etc/gconf /etc/revdep-rebuild /etc/terminfo /etc/texmf/web2c
/etc/udev/rules.d"
CXXFLAGS="-O2 -pipe -fomit-frame-pointer -march=nocona"
DISTDIR="/usr/portage/distfiles"
FEATURES="collision-protect distlocks metadata-transfer multilib-strict
parallel-fetch sandbox sfperms strict test unmerge-orphans userfetch"
GENTOO_MIRRORS="http://gentoo.cites.uiuc.edu/pub/gentoo/"
LINGUAS="en"
MAKEOPTS="-j3"
PKGDIR="/usr/portage/packages"
PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --compress
--force --whole-file --delete --delete-after --stats --timeout=180
--exclude=/distfiles --exclude=/local --exclude=/packages
--filter=H_**/files/digest-*"
PORTAGE_TMPDIR="/var/tmp"
PORTDIR="/usr/portage"
SYNC="rsync://rsync.gentoo.org/gentoo-portage"
USE="X a52 aac acl acpi alsa amd64 berkdb bitmap-fonts cli cracklib crypt cups
dri flac fortran gdbm gif gpm iconv ipv6 isdnlog jpeg midi mmx mp3 mudflap
ncurses nls nptl nptlonly ogg opengl openmp pam pcre perl png pppd python
readline reflection session spl sse sse2 ssl tcpd test truetype-fonts
type1-fonts unicode vorbis xorg xv zlib" ALSA_CARDS="hda-intel"
ALSA_PCM_PLUGINS="adpcm alaw asym copy dmix dshare dsnoop empty extplug file
hooks iec958 ioplug ladspa lfloat linear meter mulaw multi null plug rate route
share shm softvol" APACHE2_MODULES="actions alias auth_basic authn_alias
authn_anon authn_dbm authn_default authn_file authz_dbm authz_default
authz_groupfile authz_host authz_owner authz_user autoindex cache dav dav_fs
dav_lock deflate dir disk_cache env expires ext_filter file_cache filter
headers include info log_config logio mem_cache mime mime_magic negotiation
rewrite setenvif speling status unique_id userdir usertrack vhost_alias"
ELIBC="glibc" INPUT_DEVICES="evdev keyboard mouse synaptics" KERNEL="linux"
LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses
text" LINGUAS="en" USERLAND="GNU" VIDEO_CARDS="i810 vesa vga"
Unset:  CPPFLAGS, CTARGET, EMERGE_DEFAULT_OPTS, INSTALL_MASK, LANG, LC_ALL,
LDFLAGS, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS,
PORTDIR_OVERLAY

alpha/ia64/sparc stable

Stable for HPPA.

amd64 stable

this one is ready for glsa decision

voting NO since only a trusted client can cause a DoS.

trusted client means any client that can is trusted to use the proxy, which
usually is a lot of clients.

I vote YES here, even if it is only a memleak in the end. Proxy servers are
designed to run for a while, and if one client can make my memory usage grow
over time, until the server crashes, someone does have an issue.

i would suggest "Yes" because squid is often used to accellerate http-servers
(you  can just put a squid in front of you httpd and let it process the
requests), and in such installations this vuln does matter because anyone in
the net is a "trusted client" in that case.

FYI: squid-3.0.1 is now in the tree

(In reply to comment #14)
> i would suggest "Yes" because squid is often used to accellerate http-servers
> (you  can just put a squid in front of you httpd and let it process the
> requests), and in such installations this vuln does matter because anyone in
> the net is a "trusted client" in that case.
> 

Thanks for the info, changing my vote to YES and request filed.

rerating B3 as it is a dos

GLSA 200801-05

Does not affect current (2008.0) release. Removing release.