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    CVE-2012-2311

    sapi/cgi/cgi_main.c in PHP before 5.3.13 and 5.4.x before 5.4.3, when configured as a CGI script (aka php-cgi), does not properly handle query strings that contain a %3D sequence but no = (equals sign) character, which allows remote attackers to execute arbitrary code by placing command-line options in the query string, related to lack of skipping a certain php_getopt for the 'd' case. NOTE: this vulnerability exists because of an incomplete fix for CVE-2012-1823.

    Published:May 3, 2012
    Last Modified:Apr 11, 2025
    EPS:May 11, 2012
    EPSS Score:0.86827
    CVSS Score:7.5

    Affected Products

    Vendor
    Php
    Product
    Php

    Exploits

    https://www.exploit-db.com/exploits/29290https://www.exploit-db.com/exploits/18834https://www.exploit-db.com/exploits/18836https://www.exploit-db.com/exploits/29316

    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://eindbazen.net/2012/05/php-cgi-advisory-cve-2012-1823/
    http://lists.apple.com/archives/security-announce/2012/Sep/msg00004.html
    http://lists.opensuse.org/opensuse-security-announce/2012-05/msg00002.html
    http://lists.opensuse.org/opensuse-security-announce/2012-05/msg00007.html
    http://lists.opensuse.org/opensuse-security-announce/2012-05/msg00011.html
    http://marc.info/?l=bugtraq&m=134012830914727&w=2
    http://secunia.com/advisories/49014
    http://secunia.com/advisories/49085
    http://support.apple.com/kb/HT5501
    http://www.debian.org/security/2012/dsa-2465
    http://www.kb.cert.org/vuls/id/520827
    http://www.php.net/ChangeLog-5.php#5.4.3
    http://www.php.net/archive/2012.php#id2012-05-08-1
    http://www.securitytracker.com/id?1027022
    https://bugs.php.net/bug.php?id=61910
    https://bugs.php.net/patch-display.php?bug_id=61910&patch=cgi.diff-fix-check.patch&revision=1336093719&display=1
    https://h20564.www2.hp.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c03839862
    http://eindbazen.net/2012/05/php-cgi-advisory-cve-2012-1823/
    http://lists.apple.com/archives/security-announce/2012/Sep/msg00004.html
    http://lists.opensuse.org/opensuse-security-announce/2012-05/msg00002.html
    http://lists.opensuse.org/opensuse-security-announce/2012-05/msg00007.html
    http://lists.opensuse.org/opensuse-security-announce/2012-05/msg00011.html
    http://marc.info/?l=bugtraq&m=134012830914727&w=2
    http://secunia.com/advisories/49014
    http://secunia.com/advisories/49085
    http://support.apple.com/kb/HT5501
    http://www.debian.org/security/2012/dsa-2465
    http://www.kb.cert.org/vuls/id/520827
    http://www.php.net/ChangeLog-5.php#5.4.3
    http://www.php.net/archive/2012.php#id2012-05-08-1
    http://www.securitytracker.com/id?1027022
    https://bugs.php.net/bug.php?id=61910
    https://bugs.php.net/patch-display.php?bug_id=61910&patch=cgi.diff-fix-check.patch&revision=1336093719&display=1
    https://h20564.www2.hp.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c03839862

    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