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…
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 69.3%, higher than 99% of all known CVEs. Patch or mitigate before the next change window.
Description
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.
- CVSS 2.0
- 7.5 HIGHAV:N/AC:L/Au:N/C:P/I:P/A:P
- EPSS
- 69.27% probability · 99th percentile
- Public exploits
- 4 in Exploit-DB · verified · first 4 May 2012
- CISA KEV
- Not listed
- Weakness
- CWE-89
- Affected
- php/php
- Source
- secalert@redhat.com
EPSS 69.3% since 26 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
Public exploits (4)
Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.
| EDB-ID | Title | Type | Published | Verified |
|---|---|---|---|---|
| EDB-29316source ↗ | Apache + PHP < 5.3.12 / < 5.4.2 - Remote Code Execution + Scannerphp · noptrix | remote | 31 October 2013 | no |
| EDB-29290source ↗ | Apache + PHP < 5.3.12 / < 5.4.2 - cgi-bin Remote Code Executionphp · kingcope | remote | 29 October 2013 | yes |
| EDB-18836source ↗ | PHP < 5.3.12 / < 5.4.2 - CGI Argument Injectionphp · rayh4c | remote | 5 May 2012 | yes |
| EDB-18834source ↗ | PHP 5.3.12/5.4.2 - CGI Argument Injection (Metasploit)php · Metasploit | remote | 4 May 2012 | yes |
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/520827US Government Resource
- 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=61910Vendor Advisory
- 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/520827US Government Resource
- http://www.php.net/ChangeLog-5.php#5.4.3
- http://www.php.net/archive/2012.php#id2012-05-08-1
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.