CVE-2011-0421

Severity: medium (CVSS 4.3 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 13.5% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2011-03-20 · updated 2026-06-16

Description

The _zip_name_locate function in zip_name_locate.c in the Zip extension in PHP before 5.3.6 does not properly handle a ZIPARCHIVE::FL_UNCHANGED argument, which might allow context-dependent attackers to cause a denial of service (NULL pointer dereference) via an empty ZIP archive that is processed with a (1) locateName or (2) statName operation.

Affected products

PHP: through 5.3.5; 1.0, 2.0, 2.0b10, 3.0, 3.0.1, 3.0.2 (+102)

References

http://bugs.php.net/bug.php?id=53885
http://lists.apple.com/archives/Security-announce/2011//Oct/msg00003.html
http://lists.fedoraproject.org/pipermail/package-announce/2011-April/057709.html
http://lists.fedoraproject.org/pipermail/package-announce/2011-April/057710.html
http://lists.fedoraproject.org/pipermail/package-announce/2011-March/056642.html
http://lists.opensuse.org/opensuse-security-announce/2011-05/msg00005.html
http://marc.info/?l=bugtraq&m=133469208622507&w=2
http://secunia.com/advisories/43621
http://securityreason.com/achievement_securityalert/96
http://securityreason.com/securityalert/8146
http://support.apple.com/kb/HT5002
http://svn.php.net/viewvc/?view=revision&revision=307867

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