CVE-2011-1468

Multiple memory leaks in the OpenSSL extension in PHP before 5.3.6 might allow remote attackers...

4.3 MediumPublic exploitFix available

Multiple memory leaks in the OpenSSL extension in PHP before 5.3.6 might allow remote attackers to cause a denial of service (memory consumption) via (1) plaintext data to the openssl_encrypt function or (2) ciphertext data to the openssl_decrypt function.

Exploit likelihood

13.3%Up 2.3 points since Feb 4, 2022

What each source reports

NVD Score used 4.3

Record: CVE-2011-1468
CVSS 2.0: 4.3 MediumAV:N/AC:M/Au:N/C:N/I:N/A:P
Weakness: CWE-399
Updated: 2026-11-02

CVE List No score

Record: CVE-2011-1468
Updated: 2026-11-02

EUVDEUVD-2011-1473 No score

Record: EUVD-2011-1473
Updated: 2026-11-03

GitHub AdvisoriesGHSA-gvjh-w2gj-wqhg No score

Multiple memory leaks in the OpenSSL extension in PHP before 5.3.6 might allow remote attackers...

Record: GHSA-gvjh-w2gj-wqhg
Updated: 2026-11-02

Affected products

Affected packages

Affected packages
Package	Affected	Fixed
`php5` Debian:6.0	before 5.3.3-7+squeeze8, plus listed versions 5.3.3-75.3.3-7+squeeze15.3.3-7+squeeze25.3.3-7+squeeze35.3.3-7+squeeze55.3.3-7+squeeze65.3.3-7+squeeze7	5.3.3-7+squeeze8
`php53` Red Hat:enterprise_linux:5::client_workstation	before 0:5.3.3-1.el5_7.3	0:5.3.3-1.el5_7.3
`php53-bcmath` Red Hat:enterprise_linux:5::client_workstation	before 0:5.3.3-1.el5_7.3	0:5.3.3-1.el5_7.3
`php53-cli` Red Hat:enterprise_linux:5::client_workstation	before 0:5.3.3-1.el5_7.3	0:5.3.3-1.el5_7.3
`php53-common` Red Hat:enterprise_linux:5::client_workstation	before 0:5.3.3-1.el5_7.3	0:5.3.3-1.el5_7.3
`php53-dba` Red Hat:enterprise_linux:5::client_workstation	before 0:5.3.3-1.el5_7.3	0:5.3.3-1.el5_7.3
`php53-debuginfo` Red Hat:enterprise_linux:5::client_workstation	before 0:5.3.3-1.el5_7.3	0:5.3.3-1.el5_7.3
`php53-devel` Red Hat:enterprise_linux:5::client_workstation	before 0:5.3.3-1.el5_7.3	0:5.3.3-1.el5_7.3
`php53-gd` Red Hat:enterprise_linux:5::client_workstation	before 0:5.3.3-1.el5_7.3	0:5.3.3-1.el5_7.3
`php53-imap` Red Hat:enterprise_linux:5::client_workstation	before 0:5.3.3-1.el5_7.3	0:5.3.3-1.el5_7.3

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Affected packages
Package	Affected	Fixed
`php53-intl` Red Hat:enterprise_linux:5::client_workstation	before 0:5.3.3-1.el5_7.3	0:5.3.3-1.el5_7.3
`php53-ldap` Red Hat:enterprise_linux:5::client_workstation	before 0:5.3.3-1.el5_7.3	0:5.3.3-1.el5_7.3
`php53-mbstring` Red Hat:enterprise_linux:5::client_workstation	before 0:5.3.3-1.el5_7.3	0:5.3.3-1.el5_7.3
`php53-mysql` Red Hat:enterprise_linux:5::client_workstation	before 0:5.3.3-1.el5_7.3	0:5.3.3-1.el5_7.3
`php53-odbc` Red Hat:enterprise_linux:5::client_workstation	before 0:5.3.3-1.el5_7.3	0:5.3.3-1.el5_7.3
`php53-pdo` Red Hat:enterprise_linux:5::client_workstation	before 0:5.3.3-1.el5_7.3	0:5.3.3-1.el5_7.3
`php53-pgsql` Red Hat:enterprise_linux:5::client_workstation	before 0:5.3.3-1.el5_7.3	0:5.3.3-1.el5_7.3
`php53-process` Red Hat:enterprise_linux:5::client_workstation	before 0:5.3.3-1.el5_7.3	0:5.3.3-1.el5_7.3
`php53-pspell` Red Hat:enterprise_linux:5::client_workstation	before 0:5.3.3-1.el5_7.3	0:5.3.3-1.el5_7.3
`php53-snmp` Red Hat:enterprise_linux:5::client_workstation	before 0:5.3.3-1.el5_7.3	0:5.3.3-1.el5_7.3
`php53-soap` Red Hat:enterprise_linux:5::client_workstation	before 0:5.3.3-1.el5_7.3	0:5.3.3-1.el5_7.3
`php53-xml` Red Hat:enterprise_linux:5::client_workstation	before 0:5.3.3-1.el5_7.3	0:5.3.3-1.el5_7.3
`php53-xmlrpc` Red Hat:enterprise_linux:5::client_workstation	before 0:5.3.3-1.el5_7.3	0:5.3.3-1.el5_7.3
`php53` Red Hat:enterprise_linux:5::server	before 0:5.3.3-1.el5_7.3	0:5.3.3-1.el5_7.3
`php53-bcmath` Red Hat:enterprise_linux:5::server	before 0:5.3.3-1.el5_7.3	0:5.3.3-1.el5_7.3
`php53-cli` Red Hat:enterprise_linux:5::server	before 0:5.3.3-1.el5_7.3	0:5.3.3-1.el5_7.3
`php53-common` Red Hat:enterprise_linux:5::server	before 0:5.3.3-1.el5_7.3	0:5.3.3-1.el5_7.3
`php53-dba` Red Hat:enterprise_linux:5::server	before 0:5.3.3-1.el5_7.3	0:5.3.3-1.el5_7.3
`php53-debuginfo` Red Hat:enterprise_linux:5::server	before 0:5.3.3-1.el5_7.3	0:5.3.3-1.el5_7.3
`php53-devel` Red Hat:enterprise_linux:5::server	before 0:5.3.3-1.el5_7.3	0:5.3.3-1.el5_7.3
`php53-gd` Red Hat:enterprise_linux:5::server	before 0:5.3.3-1.el5_7.3	0:5.3.3-1.el5_7.3
`php53-imap` Red Hat:enterprise_linux:5::server	before 0:5.3.3-1.el5_7.3	0:5.3.3-1.el5_7.3
`php53-intl` Red Hat:enterprise_linux:5::server	before 0:5.3.3-1.el5_7.3	0:5.3.3-1.el5_7.3
`php53-ldap` Red Hat:enterprise_linux:5::server	before 0:5.3.3-1.el5_7.3	0:5.3.3-1.el5_7.3
`php53-mbstring` Red Hat:enterprise_linux:5::server	before 0:5.3.3-1.el5_7.3	0:5.3.3-1.el5_7.3
`php53-mysql` Red Hat:enterprise_linux:5::server	before 0:5.3.3-1.el5_7.3	0:5.3.3-1.el5_7.3
`php53-odbc` Red Hat:enterprise_linux:5::server	before 0:5.3.3-1.el5_7.3	0:5.3.3-1.el5_7.3
`php53-pdo` Red Hat:enterprise_linux:5::server	before 0:5.3.3-1.el5_7.3	0:5.3.3-1.el5_7.3
`php53-pgsql` Red Hat:enterprise_linux:5::server	before 0:5.3.3-1.el5_7.3	0:5.3.3-1.el5_7.3
`php53-process` Red Hat:enterprise_linux:5::server	before 0:5.3.3-1.el5_7.3	0:5.3.3-1.el5_7.3
`php53-pspell` Red Hat:enterprise_linux:5::server	before 0:5.3.3-1.el5_7.3	0:5.3.3-1.el5_7.3
`php53-snmp` Red Hat:enterprise_linux:5::server	before 0:5.3.3-1.el5_7.3	0:5.3.3-1.el5_7.3
`php53-soap` Red Hat:enterprise_linux:5::server	before 0:5.3.3-1.el5_7.3	0:5.3.3-1.el5_7.3
`php53-xml` Red Hat:enterprise_linux:5::server	before 0:5.3.3-1.el5_7.3	0:5.3.3-1.el5_7.3
`php53-xmlrpc` Red Hat:enterprise_linux:5::server	before 0:5.3.3-1.el5_7.3	0:5.3.3-1.el5_7.3
`php` Red Hat:enterprise_linux:6::server	before 0:5.3.3-3.el6_1.3	0:5.3.3-3.el6_1.3
`php-cli` Red Hat:enterprise_linux:6::server	before 0:5.3.3-3.el6_1.3	0:5.3.3-3.el6_1.3
`php-common` Red Hat:enterprise_linux:6::server	before 0:5.3.3-3.el6_1.3	0:5.3.3-3.el6_1.3
`php-debuginfo` Red Hat:enterprise_linux:6::server	before 0:5.3.3-3.el6_1.3	0:5.3.3-3.el6_1.3
`php-gd` Red Hat:enterprise_linux:6::server	before 0:5.3.3-3.el6_1.3	0:5.3.3-3.el6_1.3
`php-ldap` Red Hat:enterprise_linux:6::server	before 0:5.3.3-3.el6_1.3	0:5.3.3-3.el6_1.3
`php-mysql` Red Hat:enterprise_linux:6::server	before 0:5.3.3-3.el6_1.3	0:5.3.3-3.el6_1.3
`php-odbc` Red Hat:enterprise_linux:6::server	before 0:5.3.3-3.el6_1.3	0:5.3.3-3.el6_1.3
`php-pdo` Red Hat:enterprise_linux:6::server	before 0:5.3.3-3.el6_1.3	0:5.3.3-3.el6_1.3
`php-pgsql` Red Hat:enterprise_linux:6::server	before 0:5.3.3-3.el6_1.3	0:5.3.3-3.el6_1.3
`php-soap` Red Hat:enterprise_linux:6::server	before 0:5.3.3-3.el6_1.3	0:5.3.3-3.el6_1.3
`php-xml` Red Hat:enterprise_linux:6::server	before 0:5.3.3-3.el6_1.3	0:5.3.3-3.el6_1.3
`php-xmlrpc` Red Hat:enterprise_linux:6::server	before 0:5.3.3-3.el6_1.3	0:5.3.3-3.el6_1.3
`php-bcmath` Red Hat:enterprise_linux:6::server	before 0:5.3.3-3.el6_1.3	0:5.3.3-3.el6_1.3
`php-dba` Red Hat:enterprise_linux:6::server	before 0:5.3.3-3.el6_1.3	0:5.3.3-3.el6_1.3
`php-devel` Red Hat:enterprise_linux:6::server	before 0:5.3.3-3.el6_1.3	0:5.3.3-3.el6_1.3
`php-embedded` Red Hat:enterprise_linux:6::server	before 0:5.3.3-3.el6_1.3	0:5.3.3-3.el6_1.3
`php-enchant` Red Hat:enterprise_linux:6::server	before 0:5.3.3-3.el6_1.3	0:5.3.3-3.el6_1.3
`php-imap` Red Hat:enterprise_linux:6::server	before 0:5.3.3-3.el6_1.3	0:5.3.3-3.el6_1.3
`php-intl` Red Hat:enterprise_linux:6::server	before 0:5.3.3-3.el6_1.3	0:5.3.3-3.el6_1.3
`php-mbstring` Red Hat:enterprise_linux:6::server	before 0:5.3.3-3.el6_1.3	0:5.3.3-3.el6_1.3
`php-process` Red Hat:enterprise_linux:6::server	before 0:5.3.3-3.el6_1.3	0:5.3.3-3.el6_1.3
`php-pspell` Red Hat:enterprise_linux:6::server	before 0:5.3.3-3.el6_1.3	0:5.3.3-3.el6_1.3
`php-recode` Red Hat:enterprise_linux:6::server	before 0:5.3.3-3.el6_1.3	0:5.3.3-3.el6_1.3
`php-snmp` Red Hat:enterprise_linux:6::server	before 0:5.3.3-3.el6_1.3	0:5.3.3-3.el6_1.3
`php-tidy` Red Hat:enterprise_linux:6::server	before 0:5.3.3-3.el6_1.3	0:5.3.3-3.el6_1.3
`php-zts` Red Hat:enterprise_linux:6::server	before 0:5.3.3-3.el6_1.3	0:5.3.3-3.el6_1.3

Public exploits

Links only. Every CVE stores no exploit code.

Public exploits
Source	Link	Date
Exploit-DB	PHP < 5.3.6 'OpenSSL' Extension - 'openssl_encrypt' Plaintext Data Memory Leak Denial of Service	2011-03-08
Exploit-DB	PHP < 5.3.6 'OpenSSL' Extension - 'openssl_decrypt' Ciphertext Data Memory Leak Denial of Service	2011-03-08

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, Exploit-DB, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2011-1468 is a medium vulnerability (CVSS 4.3) in Php, published March 20, 2011. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 13.3%, the 96th percentile. Fixed in php5 5.3.3-7+squeeze8.

References

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