CVE-2014-3669

Severity: high (CVSS 7.5 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 28.9% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2014-10-29 · updated 2026-06-17
Weakness: CWE-189

Description

Integer overflow in the object_custom function in ext/standard/var_unserializer.c in PHP before 5.4.34, 5.5.x before 5.5.18, and 5.6.x before 5.6.2 allows remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via an argument to the unserialize function that triggers calculation of a large length value.

Affected products

PHP: through 5.4.33; 5.4.0, 5.4.1, 5.4.2, 5.4.3, 5.4.4, 5.4.5 (+63)

References

http://git.php.net/?p=php-src.git%3Ba=commit%3Bh=56754a7f9eba0e4f559b6ca081d9f2a447b3f159
http://linux.oracle.com/errata/ELSA-2014-1767.html
http://linux.oracle.com/errata/ELSA-2014-1768.html
http://lists.apple.com/archives/security-announce/2015/Apr/msg00001.html
http://lists.opensuse.org/opensuse-updates/2014-11/msg00024.html
http://lists.opensuse.org/opensuse-updates/2014-11/msg00034.html
http://lists.opensuse.org/opensuse-updates/2015-01/msg00006.html
http://php.net/ChangeLog-5.php
http://rhn.redhat.com/errata/RHSA-2014-1765.html
http://rhn.redhat.com/errata/RHSA-2014-1766.html
http://rhn.redhat.com/errata/RHSA-2014-1767.html
http://rhn.redhat.com/errata/RHSA-2014-1768.html

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