Description
The default session serializer in PHP 5.2 through 5.2.13 and 5.3 through 5.3.2 does not properly handle the PS_UNDEF_MARKER marker, which allows context-dependent attackers to modify arbitrary session variables via a crafted session variable name.
References (7)
Core 7
Core References
Exploit x_refsource_misc
http://php-security.org/2010/05/31/mops-2010-060-php-session-serializer-session-data-injection-vulnerability/index.html
Third Party Advisory vendor-advisory
x_refsource_debian
http://www.debian.org/security/2010/dsa-2089
Vendor Advisory vendor-advisory
x_refsource_redhat
http://www.redhat.com/support/errata/RHSA-2010-0919.html
Third Party Advisory third-party-advisory
x_refsource_secunia
http://secunia.com/advisories/42410
Mailing List vendor-advisory
x_refsource_suse
http://lists.opensuse.org/opensuse-security-announce/2010-09/msg00006.html
Mailing List vendor-advisory
x_refsource_suse
http://lists.opensuse.org/opensuse-security-announce/2010-10/msg00000.html
Third Party Advisory vdb-entry
x_refsource_vupen
http://www.vupen.com/english/advisories/2010/3081
Scores
EPSS
0.0043
EPSS Percentile
62.4%
Details
CWE
CWE-264
Status
published
Products (17)
php/php
5.2.0
php/php
5.2.1
php/php
5.2.2
php/php
5.2.3
php/php
5.2.4
php/php
5.2.5
php/php
5.2.6
php/php
5.2.7
php/php
5.2.8
php/php
5.2.9
... and 7 more
Published
Aug 20, 2010
Tracked Since
Feb 18, 2026