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CVE-2011-1398

4.3 · MEDIUM

The sapi_header_op function in main/SAPI.c in PHP before 5.3.11 and 5.4.x before 5.4.0RC2 does not check for %0D sequences (aka carriage return characters), which allows remote attackers to bypass…

Published Aug 30, 2012phpCWE-20EPSS 10.17%

Overview

CVE-2011-1398 is a medium-severity vulnerability affecting php php. It was published on August 30, 2012 and has a CVSS 2.0 base score of 4.3 (MEDIUM).

This vulnerability has a CVSS 2.0 base score of 4.3, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

The sapi_header_op function in main/SAPI.c in PHP before 5.3.11 and 5.4.x before 5.4.0RC2 does not check for %0D sequences (aka carriage return characters), which allows remote attackers to bypass an HTTP response-splitting protection mechanism via a crafted URL, related to improper interaction between the PHP header function and certain browsers, as demonstrated by Internet Explorer and Google Chrome.

Remediation

Check the references section for vendor advisories and patches from php. Update php to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus
phpphp0Affected

References

Refarticle.gmane.org/gmane.comp.php.devel/70584Reflists.opensuse.org/opensuse-security-announce/2013-08/msg00006.htmlRefopenwall.com/lists/oss-security/2012/08/29/5Refopenwall.com/lists/oss-security/2012/09/05/15Refrhn.redhat.com/errata/RHSA-2013-1307.htmlRefsecunia.com/advisories/55078Refsecurity-tracker.debian.org/tracker/CVE-2011-1398Refwww.securitytracker.com/id?1027463Refwww.ubuntu.com/usn/USN-1569-1Refbugs.php.net/bug.php?id=60227

How CyberStrike helps

Frequently asked questions

What is CVE-2011-1398?

CVE-2011-1398 is a medium-severity vulnerability affecting php php. It was published on August 30, 2012 and has a CVSS 2.0 base score of 4.3 (MEDIUM).

How severe is CVE-2011-1398?

This vulnerability has a CVSS 2.0 base score of 4.3, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2011-1398?

Check the references section for vendor advisories and patches from php. Update php to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2011-1398?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2011-1398 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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