CVE-2012-1823

PHP-CGI Query String Parameter

9.8 CRITICALActively exploited (CISA KEV)Public exploitEPSS 100.0%

Published11 May 2012
Added to CISA KEV25 Mar 2022
Remediation due15 Apr 2022

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.

CVSS 3.1 breakdown

Attack vectorNetwork

Attack complexityLow

Privileges requiredNone

User interactionNone

ScopeUnchanged

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

PHP≥ 5.4.0 < 5.4.2 · < 5.3.12

Redhat Application Stack2.0

Redhat Gluster Storage Server For On-premise2.0

Redhat Storage2.0

Redhat Storage For Public Cloud2.0

Apple Mac OS X≥ 10.6.8 < 10.7.5 · ≥ 10.8.0 < 10.8.2

Debian Linux6.0

Fedoraproject Fedora39 · 40

HP Hp-uxb.11.23 · b.11.31

Opensuse11.4 · 12.1

Redhat Enterprise Linux Desktop6.0

Redhat Enterprise Linux Eus5.6 · 6.1 · 6.2

Redhat Enterprise Linux Server5.0 · 6.0

Redhat Enterprise Linux Server Aus5.3 · 5.6

Redhat Enterprise Linux Workstation5.0 · 6.0

Suse Linux Enterprise Server10 · 11

Suse Linux Enterprise Software Development Kit10 · 11

Remediation

Fixed in

PHP≥ 5.4.2

Apple Mac OS X≥ 10.7.5

Patch & vendor advisories

References

http://eindbazen.net/2012/05/php-cgi-advisory-cve-2012-1823/Broken LinkExploit
http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c03360041Broken Link
http://lists.apple.com/archives/security-announce/2012/Sep/msg00004.htmlMailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2012-05/msg00002.htmlMailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2012-05/msg00007.htmlMailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2012-05/msg00011.htmlMailing ListThird Party Advisory
http://marc.info/?l=bugtraq&m=134012830914727&w=2Mailing List
http://rhn.redhat.com/errata/RHSA-2012-0546.htmlThird Party Advisory
http://rhn.redhat.com/errata/RHSA-2012-0547.htmlThird Party Advisory
http://rhn.redhat.com/errata/RHSA-2012-0568.htmlThird Party Advisory

and 21 more references

Related CVEs

Recent high-severity vulnerabilities sharing a weakness type.

Frequently asked

Is CVE-2012-1823 being actively exploited?

Yes. CVE-2012-1823 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added 25 Mar 2022.

How severe is CVE-2012-1823?

CVE-2012-1823 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 100.0% probability of exploitation.

Which products are affected by CVE-2012-1823?

Affected products include PHP, Redhat Application Stack, Redhat Gluster Storage Server For On-premise, Redhat Storage, Redhat Storage For Public Cloud, and 12 more.

How do I fix CVE-2012-1823?

Upgrade affected software to a fixed version, for example PHP 5.4.2, Apple Mac OS X 10.7.5 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2012-1823 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. Because it is on the CISA KEV list, Secuno flags any affected asset as top-priority automatically. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.