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Vulnerability Details : CVE-2009-0023

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.
Publish Date : 2009-06-07 Last Update Date : 2018-10-11
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- CVSS Scores & Vulnerability Types

CVSS Score
Confidentiality Impact None (There is no impact to the confidentiality of the system.)
Integrity Impact None (There is no impact to the integrity of the system)
Availability Impact Partial (There is reduced performance or interruptions in resource availability.)
Access Complexity Medium (The access conditions are somewhat specialized. Some preconditions must be satistified to exploit)
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s) Denial Of ServiceOverflow
CWE ID 119

- Additional Vendor Supplied Data

Vendor Impact CVSS Score CVSS Vector Report Date Publish Date
Redhat moderate
AV:L/AC:L/Au:S/C:P/I:P/A:P 2009-06-03 2009-06-03
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- Related OVAL Definitions

Title Definition Id Class Family
APR-util heap underwrite oval:org.apache.httpd:def:20090023
CVE-2009-0023 unix
DSA-1812 apr-util -- denial of service oval:org.mitre.oval:def:8194 unix
DSA-1812-1 apr-util -- denial of service oval:org.mitre.oval:def:13171 unix
ELSA-2009:1107: apr-util security update (Moderate) oval:org.mitre.oval:def:22801 unix
HP-UX Apache-based Web Server, Local Information Disclosure, Increase of Privilege, Remote Denial of Service (DoS) oval:org.mitre.oval:def:12321 unix
RHSA-2009:1107 -- apr-util security update (Moderate) oval:org.mitre.oval:def:29299 unix
RHSA-2009:1107: apr-util security update (Moderate) oval:com.redhat.rhsa:def:20091107 unix
RHSA-2009:1108: httpd security update (Moderate) oval:com.redhat.rhsa:def:20091108 unix
The apr_strmatch_precompile function in strmatch/apr_strmatch.c in Apache APR-util before 1.3.5 allows remote attackers ... oval:org.mitre.oval:def:10968 unix
USN-786-1 -- apr-util vulnerabilities oval:org.mitre.oval:def:13719 unix
OVAL (Open Vulnerability and Assessment Language) definitions define exactly what should be done to verify a vulnerability or a missing patch. Check out the OVAL definitions if you want to learn what you should do to verify a vulnerability.

- Products Affected By CVE-2009-0023

# Product Type Vendor Product Version Update Edition Language
1 Application Apache Apr-util 0.9.1 Version Details Vulnerabilities
2 Application Apache Apr-util 0.9.2 Version Details Vulnerabilities
3 Application Apache Apr-util 0.9.3 Version Details Vulnerabilities
4 Application Apache Apr-util 0.9.4 Version Details Vulnerabilities
5 Application Apache Apr-util 0.9.5 Version Details Vulnerabilities
6 Application Apache Apr-util 1.0 Version Details Vulnerabilities
7 Application Apache Apr-util 1.0.1 Version Details Vulnerabilities
8 Application Apache Apr-util 1.0.2 Version Details Vulnerabilities
9 Application Apache Apr-util 1.1.0 Version Details Vulnerabilities
10 Application Apache Apr-util 1.1.1 Version Details Vulnerabilities
11 Application Apache Apr-util 1.1.2 Version Details Vulnerabilities
12 Application Apache Apr-util 1.2.1 Version Details Vulnerabilities
13 Application Apache Apr-util 1.2.2 Version Details Vulnerabilities
14 Application Apache Apr-util 1.2.6 Version Details Vulnerabilities
15 Application Apache Apr-util 1.2.7 Version Details Vulnerabilities
16 Application Apache Apr-util 1.2.8 Version Details Vulnerabilities
17 Application Apache Apr-util 1.3.0 Version Details Vulnerabilities
18 Application Apache Apr-util 1.3.1 Version Details Vulnerabilities
19 Application Apache Apr-util 1.3.2 Version Details Vulnerabilities
20 Application Apache Apr-util 1.3.3 Version Details Vulnerabilities
21 Application Apache Apr-util 1.3.4 Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Apache Apr-util 21

- References For CVE-2009-0023
XF apache-aprstrmatchprecompile-dos(50964) CONFIRM
VUPEN ADV-2009-3184
VUPEN ADV-2009-1907
BID 35221 Apache APR-util 'apr_strmatch_precompile()' Integer Underflow Vulnerability Release Date:2013-04-16
BUGTRAQ 20091112 rPSA-2009-0144-1 apr-util CONFIRM CONFIRM CONFIRM
REDHAT RHSA-2009:1108
REDHAT RHSA-2009:1107
SLACKWARE SSA:2009-167-02
APPLE APPLE-SA-2009-11-09-1
GENTOO GLSA-200907-03

- Metasploit Modules Related To CVE-2009-0023

There are not any metasploit modules related to this CVE entry (Please visit for more information)

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