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 befo…

published 2014-10-29 12 y ago modified 2026-06-17 4 mo ago also EUVD-2014-3617

cvss: 7.5; version 2.0, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 28.9%; EPSS 28.9% chance of exploitation in 30 days, percentile 98%
public exploits: 0; none known

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.

Patch / fix

distros 4 links 1

ubuntu red hat suse opensuse

php5 Ubuntu 14.04 LTS 5.5.9+dfsg-1ubuntu4.5

ubuntu advisories UBUNTU-CVE-2014-3669

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

php RHEL 5 5.1.6-45.el5_11
php-gd RHEL 5 5.1.6-45.el5_11
php-cli RHEL 5 5.1.6-45.el5_11
php-dba RHEL 5 5.1.6-45.el5_11
php-pdo RHEL 5 5.1.6-45.el5_11
php-xml RHEL 5 5.1.6-45.el5_11
php-imap RHEL 5 5.1.6-45.el5_11
php-ldap RHEL 5 5.1.6-45.el5_11

red hat advisories RHSA-2014:1824 RHSA-2015:0021 RHSA-2014:1768 RHSA-2014:1767 RHSA-2014:1766 RHSA-2014:1765

php53 SLES 11 SP2-LTSS 5.3.17-47.1

suse advisories SUSE-SU-2016:1638-1

php7 openSUSE Tumbleweed 7.0.14-1.4
php5 openSUSE Tumbleweed 5.6.28-1.1

opensuse advisories openSUSE-SU-2024:10290-1 openSUSE-SU-2024:10344-1

bugs.php.net/bug.php?id=68044 advisory

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2014-3669 updated 2026-06-28 cvss 5.8

php: integer overflow in unserialize()

Red Hat Enterprise Linux (v. 5 server) php 5.1.6-45.el5_11, php53 5.3.3-26.el5_11, php-gd 5.1.6-45.el5_11, php-cli 5.1.6-45.el5_11, php-dba 5.1.6-45.el5_11, php-pdo 5.1.6-45.el5_11, +32 more
fixed: vendor fix RHSA-2014:1824
Red Hat Enterprise Linux Client Optional (v. 7) php 5.4.16-23.el7_0.3, php-gd 5.4.16-23.el7_0.3, php-cli 5.4.16-23.el7_0.3, php-dba 5.4.16-23.el7_0.3, php-fpm 5.4.16-23.el7_0.3, php-pdo 5.4.16-23.el7_0.3, +18 more
fixed: vendor fix RHSA-2014:1767
Red Hat Enterprise Linux Compute Node Optional EUS (v. 6.5) php 5.3.3-27.el6_5.3, php-gd 5.3.3-27.el6_5.3, php-dba 5.3.3-27.el6_5.3, php-fpm 5.3.3-27.el6_5.3, php-pdo 5.3.3-27.el6_5.3, php-xml 5.3.3-27.el6_5.3, +18 more
fixed: vendor fix RHSA-2015:0021
Red Hat Enterprise Linux ComputeNode Optional (v. 7) php 5.4.16-23.el7_0.3, php-gd 5.4.16-23.el7_0.3, php-cli 5.4.16-23.el7_0.3, php-dba 5.4.16-23.el7_0.3, php-fpm 5.4.16-23.el7_0.3, php-pdo 5.4.16-23.el7_0.3, +18 more Red Hat Enterprise Linux Desktop Optional (v. 6) php 5.3.3-40.el6_6, php-gd 5.3.3-40.el6_6, php-cli 5.3.3-40.el6_6, php-dba 5.3.3-40.el6_6, php-fpm 5.3.3-40.el6_6, php-pdo 5.3.3-40.el6_6, +20 more
fixed: vendor fix RHSA-2014:1767
Red Hat Enterprise Linux Desktop Workstation (v. 5 client) php 5.1.6-45.el5_11, php53 5.3.3-26.el5_11, php-gd 5.1.6-45.el5_11, php-cli 5.1.6-45.el5_11, php-dba 5.1.6-45.el5_11, php-pdo 5.1.6-45.el5_11, +32 more
fixed: vendor fix RHSA-2014:1824
Red Hat Enterprise Linux HPC Node (v. 6) php 5.3.3-40.el6_6, php-cli 5.3.3-40.el6_6, php-common 5.3.3-40.el6_6
fixed: vendor fix RHSA-2014:1767
Red Hat Enterprise Linux HPC Node EUS (v. 6.5) php 5.3.3-27.el6_5.3, php-cli 5.3.3-27.el6_5.3, php-common 5.3.3-27.el6_5.3
fixed: vendor fix RHSA-2015:0021
Red Hat Enterprise Linux HPC Node Optional (v. 6) php 5.3.3-40.el6_6, php-gd 5.3.3-40.el6_6, php-dba 5.3.3-40.el6_6, php-fpm 5.3.3-40.el6_6, php-pdo 5.3.3-40.el6_6, php-xml 5.3.3-40.el6_6, +18 more Red Hat Enterprise Linux Server (v. 6) php 5.3.3-40.el6_6, php-gd 5.3.3-40.el6_6, php-cli 5.3.3-40.el6_6, php-pdo 5.3.3-40.el6_6, php-xml 5.3.3-40.el6_6, php-ldap 5.3.3-40.el6_6, +6 more Red Hat Enterprise Linux Server (v. 7) php 5.4.16-23.el7_0.3, php-gd 5.4.16-23.el7_0.3, php-cli 5.4.16-23.el7_0.3, php-pdo 5.4.16-23.el7_0.3, php-xml 5.4.16-23.el7_0.3, php-ldap 5.4.16-23.el7_0.3, +8 more
fixed: vendor fix RHSA-2014:1767

show 5 more

Red Hat Enterprise Linux Server EUS (v. 6.5) php 5.3.3-27.el6_5.3, php-gd 5.3.3-27.el6_5.3, php-cli 5.3.3-27.el6_5.3, php-pdo 5.3.3-27.el6_5.3, php-xml 5.3.3-27.el6_5.3, php-ldap 5.3.3-27.el6_5.3, +6 more
fixed: vendor fix RHSA-2015:0021
Red Hat Enterprise Linux Server Optional (v. 6) php-dba 5.3.3-40.el6_6, php-fpm 5.3.3-40.el6_6, php-zts 5.3.3-40.el6_6, php-imap 5.3.3-40.el6_6, php-intl 5.3.3-40.el6_6, php-snmp 5.3.3-40.el6_6, +8 more Red Hat Enterprise Linux Server Optional (v. 7) php-dba 5.4.16-23.el7_0.3, php-fpm 5.4.16-23.el7_0.3, php-intl 5.4.16-23.el7_0.3, php-snmp 5.4.16-23.el7_0.3, php-bcmath 5.4.16-23.el7_0.3, php-pspell 5.4.16-23.el7_0.3, +4 more
fixed: vendor fix RHSA-2014:1767
Red Hat Enterprise Linux Server Optional EUS (v. 6.5) php 5.3.3-27.el6_5.3, php-dba 5.3.3-27.el6_5.3, php-fpm 5.3.3-27.el6_5.3, php-zts 5.3.3-27.el6_5.3, php-imap 5.3.3-27.el6_5.3, php-intl 5.3.3-27.el6_5.3, +9 more
fixed: vendor fix RHSA-2015:0021
Red Hat Enterprise Linux Workstation (v. 6) php 5.3.3-40.el6_6, php-gd 5.3.3-40.el6_6, php-cli 5.3.3-40.el6_6, php-pdo 5.3.3-40.el6_6, php-xml 5.3.3-40.el6_6, php-ldap 5.3.3-40.el6_6, +6 more Red Hat Enterprise Linux Workstation (v. 7) php 5.4.16-23.el7_0.3, php-gd 5.4.16-23.el7_0.3, php-cli 5.4.16-23.el7_0.3, php-pdo 5.4.16-23.el7_0.3, php-xml 5.4.16-23.el7_0.3, php-ldap 5.4.16-23.el7_0.3, +8 more Red Hat Enterprise Linux Workstation Optional (v. 6) php-dba 5.3.3-40.el6_6, php-fpm 5.3.3-40.el6_6, php-zts 5.3.3-40.el6_6, php-imap 5.3.3-40.el6_6, php-intl 5.3.3-40.el6_6, php-snmp 5.3.3-40.el6_6, +8 more Red Hat Enterprise Linux Workstation Optional (v. 7) php-dba 5.4.16-23.el7_0.3, php-fpm 5.4.16-23.el7_0.3, php-intl 5.4.16-23.el7_0.3, php-snmp 5.4.16-23.el7_0.3, php-bcmath 5.4.16-23.el7_0.3, php-pspell 5.4.16-23.el7_0.3, +4 more
fixed: vendor fix RHSA-2014:1767
Red Hat Software Collections 1 for Red Hat Enterprise Linux Server (v. 6) php55-php 5.5.6-13.el6, php54-php 5.4.16-22.el6, php55-php-gd 5.5.6-13.el6, php54-php-gd 5.4.16-22.el6, php55-php-cli 5.5.6-13.el6, php55-php-dba 5.5.6-13.el6, +44 more Red Hat Software Collections 1 for Red Hat Enterprise Linux Server (v. 7) php55-php 5.5.6-13.el7, php54-php 5.4.16-22.el7, php55-php-gd 5.5.6-13.el7, php54-php-gd 5.4.16-22.el7, php55-php-cli 5.5.6-13.el7, php55-php-dba 5.5.6-13.el7, +40 more Red Hat Software Collections 1 for Red Hat Enterprise Linux Server EUS (v. 6.4) php55-php 5.5.6-13.el6, php54-php 5.4.16-22.el6, php55-php-gd 5.5.6-13.el6, php54-php-gd 5.4.16-22.el6, php55-php-cli 5.5.6-13.el6, php55-php-dba 5.5.6-13.el6, +44 more Red Hat Software Collections 1 for Red Hat Enterprise Linux Server EUS (v. 6.5) php55-php 5.5.6-13.el6, php54-php 5.4.16-22.el6, php55-php-gd 5.5.6-13.el6, php54-php-gd 5.4.16-22.el6, php55-php-cli 5.5.6-13.el6, php55-php-dba 5.5.6-13.el6, +44 more Red Hat Software Collections 1 for Red Hat Enterprise Linux Server EUS (v. 6.6) php55-php 5.5.6-13.el6, php54-php 5.4.16-22.el6, php55-php-gd 5.5.6-13.el6, php54-php-gd 5.4.16-22.el6, php55-php-cli 5.5.6-13.el6, php55-php-dba 5.5.6-13.el6, +44 more Red Hat Software Collections 1 for Red Hat Enterprise Linux Workstation (v. 6) php55-php 5.5.6-13.el6, php54-php 5.4.16-22.el6, php55-php-gd 5.5.6-13.el6, php54-php-gd 5.4.16-22.el6, php55-php-cli 5.5.6-13.el6, php55-php-dba 5.5.6-13.el6, +44 more

+1 more productsfewer

Red Hat Software Collections 1 for Red Hat Enterprise Linux Workstation (v. 7) php55-php 5.5.6-13.el7, php54-php 5.4.16-22.el7, php55-php-gd 5.5.6-13.el7, php54-php-gd 5.4.16-22.el7, php55-php-cli 5.5.6-13.el7, php55-php-dba 5.5.6-13.el7, +40 more

fixed: vendor fix RHSA-2014:1765

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

28.86% chance of exploitation in the next 30 days, higher than 98% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

bugs.php.net https://bugs.php.net/bug.php?id=68044 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
NVD	2.0	7.5	AV:N/AC:L/Au:N/C:P/I:P/A:P

Classification

Weakness

CWE-189 Numeric Errors

Technology feeds

PHP rss critical rss

References

bugs.php.net /bug.php?id=68044
exploit, patch, vendor-advisory
rhn.redhat.com /errata/RHSA-2014-1824.html
vendor-advisory
lists.opensuse.org /opensuse-updates/2014-11/msg00034.html
vendor-advisory
rhn.redhat.com /errata/RHSA-2014-1767.html
vendor-advisory
ubuntu.com /usn/USN-2391-1
vendor-advisory
lists.opensuse.org /opensuse-updates/2014-11/msg00024.html
vendor-advisory
rhn.redhat.com /errata/RHSA-2014-1766.html
vendor-advisory
debian.org /security/2014/dsa-3064
vendor-advisory
lists.apple.com /archives/security-announce/2015/Apr/msg00001.html
vendor-advisory
lists.opensuse.org /opensuse-updates/2015-01/msg00006.html
vendor-advisory
rhn.redhat.com /errata/RHSA-2014-1765.html
vendor-advisory
rhn.redhat.com /errata/RHSA-2014-1768.html
vendor-advisory
secunia.com /advisories/59967
third-party-advisory
support.apple.com /HT204659
secunia.com /advisories/61982
third-party-advisory
secunia.com /advisories/61763
third-party-advisory
linux.oracle.com /errata/ELSA-2014-1767.html
linux.oracle.com /errata/ELSA-2014-1768.html
git.php.net /?p=php-src.git%3Ba=commit%3Bh=56754a7f9eba0e4f559b6ca081d9f2a447b3f159
oracle.com /technetwork/topics/security/bulletinjul2015-2511963.html
php.net /ChangeLog-5.php
bugzilla.redhat.com /show_bug.cgi?id=1154500
securityfocus.com /bid/70611
vdb-entry
secunia.com /advisories/61970
third-party-advisory
secunia.com /advisories/60699
third-party-advisory
secunia.com /advisories/60630
third-party-advisory

Sources

CVE List CVE-2014-3669
NVD CVE-2014-3669

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary