The fnmatch implementation in apr_fnmatch.c in the Apache Portable Runtime (APR) library…
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Medium
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · Partial
- Fix status
- Fixed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-399 and the CVSS impact.
Summary
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.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
Remediation
Red Hat 1 advisory
- RHSA-2011:0844 Released 2011-05-31 · Red Hat rating Lowapr security update
- Red Hat Enterprise Linux (v. 5 server) apr-1.2.7-11.el5_6.5, apr-1.2.7-11.el5_6.5.i386, apr-1.2.7-11.el5_6.5.ia64 +9
- Red Hat Enterprise Linux AS version 4 apr-0.9.4-26.el4, apr-0.9.4-26.el4.i386, apr-0.9.4-26.el4.ia64 +5
- Red Hat Enterprise Linux Desktop (v. 5 client) apr-1.2.7-11.el5_6.5, apr-1.2.7-11.el5_6.5.i386, apr-docs-1.2.7-11.el5_6.5 +1
- Red Hat Enterprise Linux Desktop Workstation (v. 5 client) apr-1.2.7-11.el5_6.5, apr-devel-1.2.7-11.el5_6.5, apr-devel-1.2.7-11.el5_6.5.i386
- Red Hat Enterprise Linux Desktop version 4 apr-0.9.4-26.el4, apr-0.9.4-26.el4.i386, apr-devel-0.9.4-26.el4 +1
- Red Hat Enterprise Linux ES version 4 apr-0.9.4-26.el4, apr-0.9.4-26.el4.i386, apr-0.9.4-26.el4.ia64 +3
- Red Hat Enterprise Linux Server (v. 6) apr-1.3.9-3.el6_1.2, apr-1.3.9-3.el6_1.2.ppc, apr-devel-1.3.9-3.el6_1.2 +1
- Red Hat Enterprise Linux WS version 4 apr-0.9.4-26.el4, apr-0.9.4-26.el4.i386, apr-0.9.4-26.el4.ia64 +3
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux (v. 5 server) | Fixed | RHSA-2011:0844 |
| Red Hat Enterprise Linux AS version 4 | Fixed | RHSA-2011:0844 |
| Red Hat Enterprise Linux Desktop (v. 5 client) | Fixed | RHSA-2011:0844 |
| Red Hat Enterprise Linux Desktop Workstation (v. 5 client) | Fixed | RHSA-2011:0844 |
| Red Hat Enterprise Linux Desktop version 4 | Fixed | RHSA-2011:0844 |
| Red Hat Enterprise Linux ES version 4 | Fixed | RHSA-2011:0844 |
| Red Hat Enterprise Linux Server (v. 6) | Fixed | RHSA-2011:0844 |
| Red Hat Enterprise Linux WS version 4 | Fixed | RHSA-2011:0844 |
Timeline
- 2026-10-02 Threatist record created from CVE-2011-1928
- 2026-10-03 Alias added: GHSA-9h43-8fmr-wxgx
References
Other 6
- http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=627182
- [www-announce] 20110519 Regressions in httpd 2.2.18, apr 1.4.4, and apr-util 1.3.11
- [oss-security] 20110519 CVE request: DoS in apr due to CVE-2011-0419 fix
- [oss-security] 20110519 Re: CVE request: DoS in apr due to CVE-2011-0419 fix
- [httpd-announce] 20110519 Regressions in httpd 2.2.18, apr 1.4.4, and apr-util 1.3.11
- https://issues.apache.org/bugzilla/show_bug.cgi?id=51219
More Apache Apr-util vulnerabilities
- TI-2009-01863 The expat XML parser in the apr_xml_* interface in xml/apr_xml.c in Apache APR-util… CVSS 3.1HIGH 7.5
- TI-2009-02302 Multiple integer overflows in the Apache Portable Runtime (APR) library and the Apache… CVSS 2.0HIGH 10.0
- TI-2026-26488 Apache Portable Runtime Utility: SQL Injection in apr_dbd_oracle CVSS 3.1CRITICAL 9.1
- TI-2026-24855 Apache Portable Runtime Utility: apr-util XML stack recursion crash CVSS 3.1CRITICAL 9.1
- TI-2010-01567 Memory leak in the apr_brigade_split_line function in buckets/apr_brigade.c in the Apache… CVSS 2.0MEDIUM 5.0
- TI-2009-01864 Off-by-one error in the apr_brigade_vprintf function in Apache APR-util before 1.3.5 on… CVSS 2.0MEDIUM 6.4
Sources
- CVE-2011-1928 · CVE Program
- CVE-2011-1928 · NVD
- FIRST EPSS
- GHSA-9h43-8fmr-wxgx · GitHub Advisory Database · CC BY 4.0
- CVE-2011-1928 · Red Hat security data · CC BY 4.0
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