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CVE-2008-3659

Published: 14 August 2008

Buffer overflow in the memnstr function in PHP 4.4.x before 4.4.9 and PHP 5.6 through 5.2.6 allows context-dependent attackers to cause a denial of service (crash) and possibly execute arbitrary code via the delimiter argument to the explode function. NOTE: the scope of this issue is limited since most applications would not use an attacker-controlled delimiter, but local attacks against safe_mode are feasible.

Notes

AuthorNote
jdstrand
per Debian, php5 -d memory_limit=256M -r \
'$res = explode(str_repeat("A",145999999),1);'
(From upstream's ext/standard/tests/strings/explode_bug.phpt)
Priority

Medium

Status

Package Release Status
php4
Launchpad, Ubuntu, Debian
dapper Ignored
(reached end-of-life)
feisty Does not exist

gutsy Does not exist

hardy Does not exist

intrepid Does not exist

jaunty Does not exist

karmic Does not exist

upstream Needs triage

php5
Launchpad, Ubuntu, Debian
dapper
Released (5.1.2-1ubuntu3.13)
feisty Needed
(reached end-of-life)
gutsy
Released (5.2.3-1ubuntu6.5)
hardy
Released (5.2.4-2ubuntu5.5)
intrepid
Released (5.2.6-2ubuntu4.1)
jaunty Not vulnerable
(5.2.6.dfsg.1-3ubuntu2)
karmic Not vulnerable
(5.2.6.dfsg.1-3ubuntu2)
upstream Needs triage

Patches:
vendor: http://www.debian.org/security/2008/dsa-1647
vendor: http://patch-tracking.debian.net/patch/series/view/php5/5.2.0-8+etch13/139-CVE-2008-3659.patch
upstream: http://cvs.php.net/viewvc.cgi/ZendEngine2/zend_operators.h?r1=1.94.2.4.2.11&r2=1.94.2.4.2.12&view=patch
upstream: http://cvs.php.net/viewvc.cgi/php-src/ext/standard/tests/strings/explode_bug.phpt?hideattic=1&r1=1.1&r2=1.1.2.1 (test)