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Fencer Vulns
medium 4.3

CVE-2009-0023 json

The apr_strmatch_precompile function in strmatch/apr_strmatch.c in Apache APR-util before 1.3.5 allows remote attackers to cause a denial o…

published 2009-06-06 17 y ago modified 2026-06-16 4 mo ago also EUVD-2009-0036

cvss
4.3
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
8.5%
EPSS 8.5% chance of exploitation in 30 days, percentile 95%
public exploits
0
none known

Summary

The apr_strmatch_precompile function in strmatch/apr_strmatch.c in Apache APR-util before 1.3.5 allows remote attackers to cause a denial of service (daemon crash) via crafted input involving (1) a .htaccess file used with the Apache HTTP Server, (2) the SVNMasterURI directive in the mod_dav_svn module in the Apache HTTP Server, (3) the mod_apreq2 module for the Apache HTTP Server, or (4) an application that uses the libapreq2 library, which triggers a heap-based buffer underflow.

Patch / fix

  • apache http_server 2.2.12
  • apr-util Debian 14, Debian 13, Debian 12 1.3.7+dfsg-1

debian advisories DEBIAN-CVE-2009-0023

  • ant certificate system 7.3 1.6.5-1jpp_1rh
  • axis certificate system 7.3 1.2.1-1jpp_3rh
  • mx4j certificate system 7.3 1:3.0.1-1jpp_4rh
  • log4j certificate system 7.3 1.2.12-1jpp_1rh
  • tomcat5 certificate system 7.3 5.5.23-0jpp_4rh.16
  • rhpki-ca certificate system 7.3 7.3.0-20.el4
  • pcsc-lite certificate system 7.3 1.3.3-3.el4
  • rhpki-kra certificate system 7.3 7.3.0-14.el4

red hat advisories RHSA-2010:0602RHSA-2009:1160RHSA-2009:1108RHSA-2009:1107

  • apache2 openSUSE Tumbleweed 2.4.23-4.1
  • apr-util openSUSE Tumbleweed 1.5.4-4.4
  • apr-util openSUSE Tumbleweed 1.6.1-8.1

opensuse advisories openSUSE-SU-2024:10268-1openSUSE-SU-2024:10568-1openSUSE-SU-2024:11586-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2009-0023 updated cvss 4.3

apr-util heap buffer underwrite

  • Red Hat Certificate System 7.3 for 4AS ant 1.6.5-1jpp_1rh, axis 1.2.1-1jpp_3rh, mx4j 3.0.1-1jpp_4rh, log4j 1.2.12-1jpp_1rh, pcsc-lite 1.3.3-3.el4, rhpki-ca 7.3.0-20.el4, +31 more Red Hat Certificate System 7.3 for 4ES ant 1.6.5-1jpp_1rh, axis 1.2.1-1jpp_3rh, mx4j 3.0.1-1jpp_4rh, log4j 1.2.12-1jpp_1rh, pcsc-lite 1.3.3-3.el4, rhpki-ca 7.3.0-20.el4, +31 more
    fixed: vendor fix RHSA-2010:0602
  • Red Hat Desktop version 3 httpd 2.0.46-73.ent, mod_ssl 2.0.46-73.ent
    fixed: vendor fix RHSA-2009:1108
  • Red Hat Enterprise Linux (v. 5 server) apr-util 1.2.7-7.el5_3.1
    fixed: vendor fix RHSA-2009:1107
  • Red Hat Enterprise Linux AS version 3 httpd 2.0.46-73.ent, mod_ssl 2.0.46-73.ent
    fixed: vendor fix RHSA-2009:1108
  • Red Hat Enterprise Linux AS version 4 apr-util 0.9.4-22.el4_8.1 Red Hat Enterprise Linux Desktop (v. 5 client) apr-util 1.2.7-7.el5_3.1 Red Hat Enterprise Linux Desktop version 4 apr-util 0.9.4-22.el4_8.1 Red Hat Enterprise Linux Desktop Workstation (v. 5 client) apr-util 1.2.7-7.el5_3.1
    fixed: vendor fix RHSA-2009:1107
  • Red Hat Enterprise Linux ES version 3 httpd 2.0.46-73.ent, mod_ssl 2.0.46-73.ent
    fixed: vendor fix RHSA-2009:1108
  • Red Hat Enterprise Linux ES version 4 apr-util 0.9.4-22.el4_8.1
    fixed: vendor fix RHSA-2009:1107
  • Red Hat Enterprise Linux WS version 3 httpd 2.0.46-73.ent, mod_ssl 2.0.46-73.ent
    fixed: vendor fix RHSA-2009:1108
show 2 more
  • Red Hat Enterprise Linux WS version 4 apr-util 0.9.4-22.el4_8.1
    fixed: vendor fix RHSA-2009:1107
  • Red Hat JBoss Web Server 1.0 for RHEL 4 AS httpd22 2.2.10-23.1.ep5.el4, mod_ssl22 2.2.10-23.1.ep5.el4, httpd22-apr 2.2.10-23.1.ep5.el4, httpd22-apr-util 2.2.10-23.1.ep5.el4 Red Hat JBoss Web Server 1.0 for RHEL 4 ES httpd22 2.2.10-23.1.ep5.el4, mod_ssl22 2.2.10-23.1.ep5.el4, httpd22-apr 2.2.10-23.1.ep5.el4, httpd22-apr-util 2.2.10-23.1.ep5.el4
    fixed: vendor fix RHSA-2009:1160

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

8.53% chance of exploitation in the next 30 days, higher than 95% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:N/A:P

Classification

Weakness
  • CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer
Technology feeds

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.