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Vulnerability record · CVE-2015-0231 · published 27 January 2015

CVE-2015-0231: Php vulnerability

Php · Php

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.

7.5 CVSS 2.0 High EPSS 43% · top 1.3%
7.5CVSS 2.0 base score
43%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
46References, 2 tagged exploit
17 Jun 2026Last modified by NVD

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.

AV:N/AC:L/Au:N/C:P/I:P/A:P

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
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
http://www.mandriva.com/security/advisories?name=MDVSA-2015:079
http://www.oracle.com/technetwork/topics/security/bulletinjul2015-2511963.html
http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html
http://www.php.net/ChangeLog-5.php
http://www.securityfocus.com/bid/72539
https://bugs.php.net/bug.php?id=68710 ExploitVendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1185397
https://github.com/php/php-src/commit/b585a3aed7880a5fa5c18e2b838fc96f40e075bd PatchVendor Advisory
https://security.gentoo.org/glsa/201503-03
https://security.gentoo.org/glsa/201606-10
https://support.apple.com/HT205267
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
http://www.mandriva.com/security/advisories?name=MDVSA-2015:079
http://www.oracle.com/technetwork/topics/security/bulletinjul2015-2511963.html
http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html
http://www.php.net/ChangeLog-5.php
http://www.securityfocus.com/bid/72539

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Source: NIST National Vulnerability Database (record CVE-2015-0231), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.