CVE-2013-4113

Severity: medium (CVSS 6.8 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 5.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2013-07-13 · updated 2026-06-16
Weakness: CWE-787

Description

ext/xml/xml.c in PHP before 5.3.27 does not properly consider parsing depth, which allows remote attackers to cause a denial of service (heap memory corruption) or possibly have unspecified other impact via a crafted document that is processed by the xml_parse_into_struct function.

Affected products

PHP: from 5.3.0 before 5.3.27; from 5.4.0 before 5.4.18 — fixed in 5.3.27, 5.4.18

How to fix

Upgrade to a fixed version: PHP 5.3.27, 5.4.18. Check the vendor advisory for mitigations.

References

http://git.php.net/?p=php-src.git%3Ba=commit%3Bh=7d163e8a0880ae8af2dd869071393e5dc07ef271
http://lists.opensuse.org/opensuse-security-announce/2013-07/msg00034.html
http://lists.opensuse.org/opensuse-security-announce/2013-08/msg00006.html
http://lists.opensuse.org/opensuse-security-announce/2013-08/msg00007.html
http://php.net/ChangeLog-5.php
http://php.net/archive/2013.php#id2013-07-11-1
http://rhn.redhat.com/errata/RHSA-2013-1049.html
http://rhn.redhat.com/errata/RHSA-2013-1050.html
http://rhn.redhat.com/errata/RHSA-2013-1061.html
http://rhn.redhat.com/errata/RHSA-2013-1062.html
http://rhn.redhat.com/errata/RHSA-2013-1063.html
http://secunia.com/advisories/54071

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