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CVE-2011-1928

4.3 · MEDIUM

The fnmatch implementation in apr_fnmatch.c in the Apache Portable Runtime (APR) library 1.4.3 and 1.4.4, and the Apache HTTP Server 2.2.18, allows remote attackers to cause a denial of service (in…

Published May 24, 2011apacheCWE-399EPSS 10.32%

Overview

CVE-2011-1928 is a medium-severity vulnerability affecting apache apr-util. It was published on May 24, 2011 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 fnmatch implementation in apr_fnmatch.c in the Apache Portable Runtime (APR) library 1.4.3 and 1.4.4, and the Apache HTTP Server 2.2.18, allows remote attackers to cause a denial of service (infinite loop) via a URI that does not match unspecified types of wildcard patterns, as demonstrated by attacks against mod_autoindex in httpd when a /*/WEB-INF/ configuration pattern is used. NOTE: this issue exists because of an incorrect fix for CVE-2011-0419.

Remediation

Check the references section for vendor advisories and patches from apache. Update apr-util 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

References

Refbugs.debian.org/cgi-bin/bugreport.cgi?bug=627182Reflists.opensuse.org/opensuse-security-announce/2011-11/msg00011.htmlRefmail-archives.apache.org/mod_mbox/httpd-announce/201105.mbox/%3C4DD55092.3030403%40apache.org%3ERefmail-archives.apache.org/mod_mbox/www-announce/201105.mbox/%3c4DD55076.1060005%40apache.org%3eRefmarc.info/?l=bugtraq&m=134987041210674&w=2Refopenwall.com/lists/oss-security/2011/05/19/10Refopenwall.com/lists/oss-security/2011/05/19/5Refsecunia.com/advisories/44558Refsecunia.com/advisories/44613Refsecunia.com/advisories/44661

How CyberStrike helps

Frequently asked questions

What is CVE-2011-1928?

CVE-2011-1928 is a medium-severity vulnerability affecting apache apr-util. It was published on May 24, 2011 and has a CVSS 2.0 base score of 4.3 (MEDIUM).

How severe is CVE-2011-1928?

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-2011-1928?

Check the references section for vendor advisories and patches from apache. Update apr-util 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-2011-1928?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2011-1928 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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