$ cve CVE-2012-2311 JSON

CVE-2012-2311 EXPLOIT

7.5

HIGH · CVSS 2.0 · EPSS 69.3% (pctl 99)

Patch early

A public exploit exists.

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.

Scoring

CVSS	7.5 (HIGH, v2.0)
Vector	AV:N/AC:L/Au:N/C:P/I:P/A:P
EPSS	69.27% — more likely to be exploited than 99% of all CVEs
Weakness	CWE-89
On CISA KEV	no
Public exploit	yes
Published	2012-05-11
Last modified	2026-06-16

Affected (1)

Vendor	Product
php	php

Public exploits

Source	Title	Date
exploit-db	Apache + PHP < 5.3.12 / < 5.4.2 - Remote Code Execution + Scanner	2013-10-31
exploit-db	Apache + PHP < 5.3.12 / < 5.4.2 - cgi-bin Remote Code Execution	2013-10-29
exploit-db	PHP < 5.3.12 / < 5.4.2 - CGI Argument Injection	2012-05-05
exploit-db	PHP 5.3.12/5.4.2 - CGI Argument Injection (Metasploit)	2012-05-04

References

→ the Explorer · watch your stack · NVD