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Vulnerability record · CVE-2011-1928 · published 24 May 2011

CVE-2011-1928: Apache apr-util vulnerability

Apache · Apr Util

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.

4.3 CVSS 2.0 Medium EPSS 10% · top 4.4% CWE-399 · CWE-399
4.3CVSS 2.0 base score
10%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
34References
16 Jun 2026Last modified by NVD

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.

AV:N/AC:M/Au:N/C:N/I:N/A:P

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=627182
http://lists.opensuse.org/opensuse-security-announce/2011-11/msg00011.html
http://mail-archives.apache.org/mod_mbox/httpd-announce/201105.mbox/%3C4DD55092.3030403%40apache.org%3E
http://mail-archives.apache.org/mod_mbox/www-announce/201105.mbox/%3c4DD55076.1060005%40apache.org%3e
http://marc.info/?l=bugtraq&m=134987041210674&w=2
http://openwall.com/lists/oss-security/2011/05/19/10
http://openwall.com/lists/oss-security/2011/05/19/5
http://secunia.com/advisories/44558 Vendor Advisory
http://secunia.com/advisories/44613
http://secunia.com/advisories/44661 Vendor Advisory
http://secunia.com/advisories/44780
http://secunia.com/advisories/48308
http://www.mandriva.com/security/advisories?name=MDVSA-2011:095
http://www.redhat.com/support/errata/RHSA-2011-0844.html
http://www.vupen.com/english/advisories/2011/1289 Vendor Advisory
http://www.vupen.com/english/advisories/2011/1290 Vendor Advisory
https://issues.apache.org/bugzilla/show_bug.cgi?id=51219
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=627182
http://lists.opensuse.org/opensuse-security-announce/2011-11/msg00011.html
http://mail-archives.apache.org/mod_mbox/httpd-announce/201105.mbox/%3C4DD55092.3030403%40apache.org%3E
http://mail-archives.apache.org/mod_mbox/www-announce/201105.mbox/%3c4DD55076.1060005%40apache.org%3e
http://marc.info/?l=bugtraq&m=134987041210674&w=2
http://openwall.com/lists/oss-security/2011/05/19/10
http://openwall.com/lists/oss-security/2011/05/19/5
http://secunia.com/advisories/44558 Vendor Advisory
http://secunia.com/advisories/44613
http://secunia.com/advisories/44661 Vendor Advisory
http://secunia.com/advisories/44780
http://secunia.com/advisories/48308
http://www.mandriva.com/security/advisories?name=MDVSA-2011:095
http://www.redhat.com/support/errata/RHSA-2011-0844.html
http://www.vupen.com/english/advisories/2011/1289 Vendor Advisory
http://www.vupen.com/english/advisories/2011/1290 Vendor Advisory
https://issues.apache.org/bugzilla/show_bug.cgi?id=51219

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2011-1928), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.