CVE-2015-0231

Severity: high (CVSS 7.5 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 44.4% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2015-01-27 · updated 2026-06-17

Description

Use-after-free vulnerability in the process_nested_data function in ext/standard/var_unserializer.re in PHP before 5.4.37, 5.5.x before 5.5.21, and 5.6.x before 5.6.5 allows remote attackers to execute arbitrary code via a crafted unserialize call that leverages improper handling of duplicate numerical keys within the serialized properties of an object. NOTE: this vulnerability exists because of an incomplete fix for CVE-2014-8142.

Affected products

PHP: through 5.4.36; 5.4.0, 5.4.1, 5.4.2, 5.4.3, 5.4.4, 5.4.5 (+77)

References

http://advisories.mageia.org/MGASA-2015-0040.html
http://lists.apple.com/archives/security-announce/2015/Sep/msg00008.html
http://lists.opensuse.org/opensuse-security-announce/2015-02/msg00029.html
http://lists.opensuse.org/opensuse-updates/2015-02/msg00079.html
http://marc.info/?l=bugtraq&m=143403519711434&w=2
http://marc.info/?l=bugtraq&m=143748090628601&w=2
http://marc.info/?l=bugtraq&m=144050155601375&w=2
http://rhn.redhat.com/errata/RHSA-2015-1053.html
http://rhn.redhat.com/errata/RHSA-2015-1066.html
http://rhn.redhat.com/errata/RHSA-2015-1135.html
http://www.debian.org/security/2015/dsa-3195
http://www.mandriva.com/security/advisories?name=MDVSA-2015:032

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