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Actively exploited · Published May 11, 2012 · Assigned by certcc

CVE-2012-1823

Critical 9.8 Exploited

In plain English

A critical-severity command injection in PHP from PHP. Attackers are actively exploiting it in the wild (listed by CISA on March 25, 2022). The chance it is exploited in the next 30 days is estimated at 100.0% (higher than 99.9% of all known vulnerabilities). Ready-made attack tooling exists: Metasploit, Nuclei, public proof-of-concept code. Apply updates per vendor instructions.

Severity (CVSS 3.1)9.8Critical
Exploit odds (30 days)100.0%top 0.0% of all CVEs
Exploited in the wildYesCISA KEV since Mar 25, 2022
Attack tooling3Metasploit, Nuclei, Public PoC

CISA guidance

Apply updates per vendor instructions.

Federal agencies must remediate by Apr 15, 2022.

Official description

sapi/cgi/cgi_main.c in PHP before 5.3.12 and 5.4.x before 5.4.2, when configured as a CGI script (aka php-cgi), does not properly handle query strings that lack an = (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.

Affected products (as reported)

VendorProductVersions
n/a n/a n/a

Weakness: CWE-77 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References