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CVE-2012-0830

The php_register_variable_ex function in php_variables.c in PHP 5.3.9 allows remote attackers to execute arbitrary code via a request containing a large number of variables, related to improper handling of array variables. NOTE: this vulnerability exists because of an incorrect fix for CVE-2011-4885.

Published:Feb 2, 2012

Last Modified:Apr 11, 2025

EPS:Feb 6, 2012

EPSS Score:0.33369

CVSS Score:7.5

Affected Products

Vendor

Product

Action

Vendor

Php

Product

Php

Php

Php

Vendor

Redhat

Product

Enterprise Linux

Redhat

Enterprise Linux

Exploits

http://thexploit.com/sec/critical-php-remote-vulnerability-introduced-in-fix-for-php-hashtable-collision-dos/http://www.securityfocus.com/bid/51830 https://gist.github.com/1725489 http://thexploit.com/sec/critical-php-remote-vulnerability-introduced-in-fix-for-php-hashtable-collision-dos/http://www.securityfocus.com/bid/51830 https://gist.github.com/1725489 https://www.exploit-db.com/exploits/18460

Common Weakness Enumeration

CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

CWE-228 Improper Handling of Syntactically Invalid Structure

Common Attack Pattern Enumeration and Classification (CAPEC)

CAPEC-10 Buffer Overflow via Environment Variables

CAPEC-100 Overflow Buffers

CAPEC-123 Buffer Manipulation

CAPEC-14 Client-side Injection-induced Buffer Overflow

CAPEC-24 Filter Failure through Buffer Overflow

CAPEC-42 MIME Conversion

CAPEC-44 Overflow Binary Resource File

CAPEC-45 Buffer Overflow via Symbolic Links

CAPEC-46 Overflow Variables and Tags

CAPEC-47 Buffer Overflow via Parameter Expansion

CAPEC-8 Buffer Overflow in an API Call

CAPEC-9 Buffer Overflow in Local Command-Line Utilities

Related CVEs

CVE-2026-14355 (CVSS 5.6) — In PHP versions 8.2.* before 8.2.32, 8.3.* before 8.3.32, 8.4.* before 8.4.23, 8.5.* before 8.5.8, the AES-WRA…

CVE-2026-7263 (CVSS 6.3) — In PHP versions 8.4.* before 8.4.21 and 8.5.* before 8.5.6, DOMNode::C14N() method may process the XML data in…

CVE-2026-6104 (CVSS 6.3) — In PHP versions 8.4.* before 8.4.21 and 8.5.* before 8.5.6, when an encoding name containing an embedded NUL b…

CVE-2026-7258 (CVSS 6.3) — In PHP versions 8.2.* before 8.2.31, 8.3.* before 8.3.31, 8.4.* before 8.4.21, and 8.5.* before 8.5.6, some fu…

CVE-2026-6722 (CVSS 9.5) — In PHP versions 8.2.* before 8.2.31, 8.3.* before 8.3.31, 8.4.* before 8.4.21, and 8.5.* before 8.5.6, the SOA…

CVE-2026-7259 (CVSS 2.1) — In PHP versions 8.2.* before 8.2.31, 8.3.* before 8.3.31, 8.4.* before 8.4.21, and 8.5.* before 8.5.6, a misma…

CVE-2026-7261 (CVSS 6.3) — In PHP versions 8.2.* before 8.2.31, 8.3.* before 8.3.31, 8.4.* before 8.4.21, and 8.5.* before 8.5.6, when So…

CVE-2026-7262 (CVSS 2.9) — In PHP versions 8.2.* before 8.2.31, 8.3.* before 8.3.31, 8.4.* before 8.4.21, and 8.5.* before 8.5.6, when a …

CVE-2025-14179 (CVSS 7.4) — In PHP versions 8.2.* before 8.2.31, 8.3.* before 8.3.31, 8.4.* before 8.4.21, and 8.5.* before 8.5.6, the PDO…

CVE-2026-7568 (CVSS 6.3) — In PHP versions 8.2.* before 8.2.31, 8.3.* before 8.3.31, 8.4.* before 8.4.21, and 8.5.* before 8.5.6, the met…

References

http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c03360041

http://lists.apple.com/archives/security-announce/2012/May/msg00001.html

http://lists.opensuse.org/opensuse-security-announce/2012-03/msg00013.html

http://lists.opensuse.org/opensuse-security-announce/2012-03/msg00016.html

http://marc.info/?l=bugtraq&m=134012830914727&w=2

http://openwall.com/lists/oss-security/2012/02/02/12

http://openwall.com/lists/oss-security/2012/02/03/1

http://rhn.redhat.com/errata/RHSA-2012-0092.html

http://secunia.com/advisories/47801

http://secunia.com/advisories/47806

http://secunia.com/advisories/47813

http://secunia.com/advisories/48668

http://securitytracker.com/id?1026631

http://support.apple.com/kb/HT5281

http://svn.php.net/viewvc?view=revision&revision=323007

http://thexploit.com/sec/critical-php-remote-vulnerability-introduced-in-fix-for-php-hashtable-collision-dos/

http://www.debian.org/security/2012/dsa-2403

http://www.h-online.com/security/news/item/Critical-PHP-vulnerability-being-fixed-1427316.html

http://www.osvdb.org/78819

http://www.php.net/ChangeLog-5.php#5.3.10

http://www.securityfocus.com/bid/51830

https://exchange.xforce.ibmcloud.com/vulnerabilities/72911

https://gist.github.com/1725489

http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c03360041

http://lists.apple.com/archives/security-announce/2012/May/msg00001.html

http://lists.opensuse.org/opensuse-security-announce/2012-03/msg00013.html

http://lists.opensuse.org/opensuse-security-announce/2012-03/msg00016.html

http://marc.info/?l=bugtraq&m=134012830914727&w=2

http://openwall.com/lists/oss-security/2012/02/02/12

http://openwall.com/lists/oss-security/2012/02/03/1

http://rhn.redhat.com/errata/RHSA-2012-0092.html

http://secunia.com/advisories/47801

http://secunia.com/advisories/47806

http://secunia.com/advisories/47813

http://secunia.com/advisories/48668

http://securitytracker.com/id?1026631

http://support.apple.com/kb/HT5281

http://svn.php.net/viewvc?view=revision&revision=323007

http://thexploit.com/sec/critical-php-remote-vulnerability-introduced-in-fix-for-php-hashtable-collision-dos/

http://www.debian.org/security/2012/dsa-2403

http://www.h-online.com/security/news/item/Critical-PHP-vulnerability-being-fixed-1427316.html

http://www.osvdb.org/78819

http://www.php.net/ChangeLog-5.php#5.3.10

http://www.securityfocus.com/bid/51830

https://exchange.xforce.ibmcloud.com/vulnerabilities/72911

https://gist.github.com/1725489

Common Vulnerability Scoring System

Attack Vector

Network

Adjacent

Local

Physical

Privileges Required

None

Low

High

User Interaction

None

Required

Scope

Unchanged

Changed

Confidentiality

None

Low

High

Integrity

None

Low

High

Availability

None

Low

High