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TI-2009-00023 Aliases CVE-2009-0023GHSA-8jp8-5574-2q6q

The apr_strmatch_precompile function in strmatch/apr_strmatch.c in Apache APR-util before…

Priority LOW 31CWE-119Published · Updated

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-119 and the CVSS impact.

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.

Why it matters now

EPSS 0.0853 95th percentileScored 2026-11-07
Fix Fixed Red Hat: 4 advisories

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 22

CPEVersionsRoleVendor
cpe:2.3:a:apache:apr-util:*:*:*:*:*:*:*:*up to 1.3.4VulnerableApache
cpe:2.3:a:apache:apr-util:0.9.1:*:*:*:*:*:*:*0.9.1VulnerableApache
cpe:2.3:a:apache:apr-util:0.9.2:*:*:*:*:*:*:*0.9.2VulnerableApache
cpe:2.3:a:apache:apr-util:0.9.3:*:*:*:*:*:*:*0.9.3VulnerableApache
cpe:2.3:a:apache:apr-util:0.9.4:*:*:*:*:*:*:*0.9.4VulnerableApache
cpe:2.3:a:apache:apr-util:0.9.5:*:*:*:*:*:*:*0.9.5VulnerableApache
cpe:2.3:a:apache:apr-util:1.0:*:*:*:*:*:*:*1.0VulnerableApache
cpe:2.3:a:apache:apr-util:1.0.1:*:*:*:*:*:*:*1.0.1VulnerableApache
cpe:2.3:a:apache:apr-util:1.0.2:*:*:*:*:*:*:*1.0.2VulnerableApache
cpe:2.3:a:apache:apr-util:1.1.0:*:*:*:*:*:*:*1.1.0VulnerableApache
  • cpe:2.3:a:apache:apr-util:*:*:*:*:*:*:*:* Versions up to 1.3.4 Vulnerable ·Apache
  • cpe:2.3:a:apache:apr-util:0.9.1:*:*:*:*:*:*:* Versions 0.9.1 Vulnerable ·Apache
  • cpe:2.3:a:apache:apr-util:0.9.2:*:*:*:*:*:*:* Versions 0.9.2 Vulnerable ·Apache
  • cpe:2.3:a:apache:apr-util:0.9.3:*:*:*:*:*:*:* Versions 0.9.3 Vulnerable ·Apache
  • cpe:2.3:a:apache:apr-util:0.9.4:*:*:*:*:*:*:* Versions 0.9.4 Vulnerable ·Apache
  • cpe:2.3:a:apache:apr-util:0.9.5:*:*:*:*:*:*:* Versions 0.9.5 Vulnerable ·Apache
  • cpe:2.3:a:apache:apr-util:1.0:*:*:*:*:*:*:* Versions 1.0 Vulnerable ·Apache
  • cpe:2.3:a:apache:apr-util:1.0.1:*:*:*:*:*:*:* Versions 1.0.1 Vulnerable ·Apache
  • cpe:2.3:a:apache:apr-util:1.0.2:*:*:*:*:*:*:* Versions 1.0.2 Vulnerable ·Apache
  • cpe:2.3:a:apache:apr-util:1.1.0:*:*:*:*:*:*:* Versions 1.1.0 Vulnerable ·Apache
Show 12 more CPE
CPEVersionsRoleVendor
cpe:2.3:a:apache:apr-util:1.1.1:*:*:*:*:*:*:*1.1.1VulnerableApache
cpe:2.3:a:apache:apr-util:1.1.2:*:*:*:*:*:*:*1.1.2VulnerableApache
cpe:2.3:a:apache:apr-util:1.2.1:*:*:*:*:*:*:*1.2.1VulnerableApache
cpe:2.3:a:apache:apr-util:1.2.2:*:*:*:*:*:*:*1.2.2VulnerableApache
cpe:2.3:a:apache:apr-util:1.2.6:*:*:*:*:*:*:*1.2.6VulnerableApache
cpe:2.3:a:apache:apr-util:1.2.7:*:*:*:*:*:*:*1.2.7VulnerableApache
cpe:2.3:a:apache:apr-util:1.2.8:*:*:*:*:*:*:*1.2.8VulnerableApache
cpe:2.3:a:apache:apr-util:1.3.0:*:*:*:*:*:*:*1.3.0VulnerableApache
cpe:2.3:a:apache:apr-util:1.3.1:*:*:*:*:*:*:*1.3.1VulnerableApache
cpe:2.3:a:apache:apr-util:1.3.2:*:*:*:*:*:*:*1.3.2VulnerableApache
cpe:2.3:a:apache:apr-util:1.3.3:*:*:*:*:*:*:*1.3.3VulnerableApache
cpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:*2.2.0 to before 2.2.12VulnerableApache
  • cpe:2.3:a:apache:apr-util:1.1.1:*:*:*:*:*:*:* Versions 1.1.1 Vulnerable ·Apache
  • cpe:2.3:a:apache:apr-util:1.1.2:*:*:*:*:*:*:* Versions 1.1.2 Vulnerable ·Apache
  • cpe:2.3:a:apache:apr-util:1.2.1:*:*:*:*:*:*:* Versions 1.2.1 Vulnerable ·Apache
  • cpe:2.3:a:apache:apr-util:1.2.2:*:*:*:*:*:*:* Versions 1.2.2 Vulnerable ·Apache
  • cpe:2.3:a:apache:apr-util:1.2.6:*:*:*:*:*:*:* Versions 1.2.6 Vulnerable ·Apache
  • cpe:2.3:a:apache:apr-util:1.2.7:*:*:*:*:*:*:* Versions 1.2.7 Vulnerable ·Apache
  • cpe:2.3:a:apache:apr-util:1.2.8:*:*:*:*:*:*:* Versions 1.2.8 Vulnerable ·Apache
  • cpe:2.3:a:apache:apr-util:1.3.0:*:*:*:*:*:*:* Versions 1.3.0 Vulnerable ·Apache
  • cpe:2.3:a:apache:apr-util:1.3.1:*:*:*:*:*:*:* Versions 1.3.1 Vulnerable ·Apache
  • cpe:2.3:a:apache:apr-util:1.3.2:*:*:*:*:*:*:* Versions 1.3.2 Vulnerable ·Apache
  • cpe:2.3:a:apache:apr-util:1.3.3:*:*:*:*:*:*:* Versions 1.3.3 Vulnerable ·Apache
  • cpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:* Versions 2.2.0 to before 2.2.12 Vulnerable ·Apache

Remediation

Red Hat 4 advisories

  • RHSA-2010:0602 Released 2010-08-04 · Red Hat rating Moderate
    Red Hat Certificate System 7.3 security update
    • Red Hat Certificate System 7.3 for 4AS ant-1.6.5-1jpp_1rh, avalon-logkit-1.2-2jpp_4rh, axis-1.2.1-1jpp_3rh +39
    • Red Hat Certificate System 7.3 for 4ES ant-1.6.5-1jpp_1rh, avalon-logkit-1.2-2jpp_4rh, axis-1.2.1-1jpp_3rh +39
  • RHSA-2009:1160 Released 2009-07-17 · Red Hat rating Important
    httpd22 security update
    • Red Hat JBoss Web Server 1.0 for RHEL 4 AS httpd22-2.2.10-23.1.ep5.el4, httpd22-2.2.10-23.1.ep5.el4.i386, httpd22-apr-2.2.10-23.1.ep5.el4 +11
    • Red Hat JBoss Web Server 1.0 for RHEL 4 ES httpd22-2.2.10-23.1.ep5.el4, httpd22-2.2.10-23.1.ep5.el4.i386, httpd22-apr-2.2.10-23.1.ep5.el4 +11
  • RHSA-2009:1108 Released 2009-06-16 · Red Hat rating Moderate
    httpd security update
    • Red Hat Desktop version 3 httpd-2.0.46-73.ent, httpd-2.0.46-73.ent.i386, httpd-devel-2.0.46-73.ent +3
    • Red Hat Enterprise Linux AS version 3 httpd-2.0.46-73.ent, httpd-2.0.46-73.ent.i386, httpd-2.0.46-73.ent.ia64 +9
    • Red Hat Enterprise Linux ES version 3 httpd-2.0.46-73.ent, httpd-2.0.46-73.ent.i386, httpd-2.0.46-73.ent.ia64 +6
    • Red Hat Enterprise Linux WS version 3 httpd-2.0.46-73.ent, httpd-2.0.46-73.ent.i386, httpd-2.0.46-73.ent.ia64 +6
Show 1 more Red Hat advisories
  • RHSA-2009:1107 Released 2009-06-16 · Red Hat rating Moderate
    apr-util security update
    • Red Hat Enterprise Linux (v. 5 server) apr-util-1.2.7-7.el5_3.1, apr-util-1.2.7-7.el5_3.1.i386, apr-util-1.2.7-7.el5_3.1.ia64 +9
    • Red Hat Enterprise Linux AS version 4 apr-util-0.9.4-22.el4_8.1, apr-util-0.9.4-22.el4_8.1.i386, apr-util-0.9.4-22.el4_8.1.ia64 +5
    • Red Hat Enterprise Linux Desktop (v. 5 client) apr-util-1.2.7-7.el5_3.1, apr-util-1.2.7-7.el5_3.1.i386, apr-util-docs-1.2.7-7.el5_3.1 +1
    • Red Hat Enterprise Linux Desktop Workstation (v. 5 client) apr-util-1.2.7-7.el5_3.1, apr-util-devel-1.2.7-7.el5_3.1, apr-util-devel-1.2.7-7.el5_3.1.i386
    • Red Hat Enterprise Linux Desktop version 4 apr-util-0.9.4-22.el4_8.1, apr-util-0.9.4-22.el4_8.1.i386, apr-util-devel-0.9.4-22.el4_8.1 +1
    • Red Hat Enterprise Linux ES version 4 apr-util-0.9.4-22.el4_8.1, apr-util-0.9.4-22.el4_8.1.i386, apr-util-0.9.4-22.el4_8.1.ia64 +3
    • Red Hat Enterprise Linux WS version 4 apr-util-0.9.4-22.el4_8.1, apr-util-0.9.4-22.el4_8.1.i386, apr-util-0.9.4-22.el4_8.1.ia64 +3

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Certificate System 7.3 for 4ASFixed RHSA-2010:0602
Red Hat Certificate System 7.3 for 4ESFixed RHSA-2010:0602
Red Hat Desktop version 3Fixed RHSA-2009:1108
Red Hat Enterprise Linux (v. 5 server)Fixed RHSA-2009:1107
Red Hat Enterprise Linux AS version 3Fixed RHSA-2009:1108
Red Hat Enterprise Linux AS version 4Fixed RHSA-2009:1107
Red Hat Enterprise Linux Desktop (v. 5 client)Fixed RHSA-2009:1107
Red Hat Enterprise Linux Desktop Workstation (v. 5 client)Fixed RHSA-2009:1107
Red Hat Enterprise Linux Desktop version 4Fixed RHSA-2009:1107
Red Hat Enterprise Linux ES version 3Fixed RHSA-2009:1108
Red Hat Enterprise Linux ES version 4Fixed RHSA-2009:1107
Red Hat Enterprise Linux WS version 3Fixed RHSA-2009:1108
Red Hat Enterprise Linux WS version 4Fixed RHSA-2009:1107
Red Hat JBoss Web Server 1.0 for RHEL 4 ASFixed RHSA-2009:1160
Red Hat JBoss Web Server 1.0 for RHEL 4 ESFixed RHSA-2009:1160

Timeline

  1. 2026-10-02 Threatist record created from CVE-2009-0023
  2. 2026-10-03 Alias added: GHSA-8jp8-5574-2q6q
  3. 2026-10-19 EPSS moved to the 95th–99th percentile

References

Patch 2

Advisory 40

  • 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
See all 10 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences