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    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.

    Published:Jun 3, 2009
    Last Modified:Apr 23, 2026
    EPS:Jun 6, 2009
    EPSS Score:0.14793
    CVSS Score:4.3

    Affected Products

    Vendor
    Apache
    Product
    Apr-util
    Vendor
    Apache
    Product
    Http Server
    Vendor
    Redhat
    Product
    Certificate System
    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Redhat
    Product
    Jboss Enterprise Web Server

    Exploits

    No exploit reference

    Related CVEs

    CVE-2025-49506 (CVSS 7.5) — APR-util versions 1.6.3 (and earlier) function apr_password_validate() was not constant-time with regards to h…
    CVE-2026-34191 (CVSS 9.1) — Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') vulnerability in Apache P…
    CVE-2026-34501 (CVSS 7.5) — Heap-based Buffer Overflow vulnerability in Apache Portable Runtime Utility redis client. This issue affects …
    CVE-2026-34502 (CVSS 7.5) — Heap-based Buffer Overflow vulnerability in Apache Portable Runtime Utility memcached client This issue affec…
    CVE-2011-1928 (CVSS 4.3) — The fnmatch implementation in apr_fnmatch.c in the Apache Portable Runtime (APR) library 1.4.3 and 1.4.4, and …
    CVE-2010-1623 (CVSS 5) — Memory leak in the apr_brigade_split_line function in buckets/apr_brigade.c in the Apache Portable Runtime Uti…
    CVE-2009-2412 (CVSS 10) — Multiple integer overflows in the Apache Portable Runtime (APR) library and the Apache Portable Utility librar…
    CVE-2009-1955 (CVSS 7.5) — The expat XML parser in the apr_xml_* interface in xml/apr_xml.c in Apache APR-util before 1.3.7, as used in t…
    CVE-2009-1956 (CVSS 6.4) — Off-by-one error in the apr_brigade_vprintf function in Apache APR-util before 1.3.5 on big-endian platforms a…

    References

    http://lists.apple.com/archives/security-announce/2009/Nov/msg00000.html
    http://marc.info/?l=bugtraq&m=129190899612998&w=2
    http://secunia.com/advisories/34724
    http://secunia.com/advisories/35284
    http://secunia.com/advisories/35360
    http://secunia.com/advisories/35395
    http://secunia.com/advisories/35444
    http://secunia.com/advisories/35487
    http://secunia.com/advisories/35565
    http://secunia.com/advisories/35710
    http://secunia.com/advisories/35797
    http://secunia.com/advisories/35843
    http://secunia.com/advisories/37221
    http://security.gentoo.org/glsa/glsa-200907-03.xml
    http://slackware.com/security/viewer.php?l=slackware-security&y=2009&m=slackware-security.538210
    http://support.apple.com/kb/HT3937
    http://svn.apache.org/viewvc?view=rev&revision=779880
    http://wiki.rpath.com/Advisories:rPSA-2009-0144
    http://www-01.ibm.com/support/docview.wss?uid=swg1PK88341
    http://www-01.ibm.com/support/docview.wss?uid=swg1PK91241
    http://www-01.ibm.com/support/docview.wss?uid=swg1PK99478
    http://www-01.ibm.com/support/docview.wss?uid=swg27014463
    http://www.apache.org/dist/apr/CHANGES-APR-UTIL-1.3
    http://www.debian.org/security/2009/dsa-1812
    http://www.mandriva.com/security/advisories?name=MDVSA-2009:131
    http://www.mandriva.com/security/advisories?name=MDVSA-2013:150
    http://www.oracle.com/technetwork/topics/security/cpuapr2013-1899555.html
    http://www.redhat.com/support/errata/RHSA-2009-1107.html
    http://www.redhat.com/support/errata/RHSA-2009-1108.html
    http://www.securityfocus.com/archive/1/507855/100/0/threaded
    http://www.securityfocus.com/bid/35221
    http://www.ubuntu.com/usn/usn-786-1
    http://www.ubuntu.com/usn/usn-787-1
    http://www.vupen.com/english/advisories/2009/1907
    http://www.vupen.com/english/advisories/2009/3184
    https://bugzilla.redhat.com/show_bug.cgi?id=503928
    https://exchange.xforce.ibmcloud.com/vulnerabilities/50964
    https://lists.apache.org/thread.html/8d63cb8e9100f28a99429b4328e4e7cebce861d5772ac9863ba2ae6f%40%3Ccvs.httpd.apache.org%3E
    https://lists.apache.org/thread.html/f7f95ac1cd9895db2714fa3ebaa0b94d0c6df360f742a40951384a53%40%3Ccvs.httpd.apache.org%3E
    https://lists.apache.org/thread.html/r57608dc51b79102f3952ae06f54d5277b649c86d6533dcd6a7d201f7%40%3Ccvs.httpd.apache.org%3E
    https://lists.apache.org/thread.html/r75cbe9ea3e2114e4271bbeca7aff96117b50c1b6eb7c4772b0337c1f%40%3Ccvs.httpd.apache.org%3E
    https://lists.apache.org/thread.html/r7dd6be4dc38148704f2edafb44a8712abaa3a2be120d6c3314d55919%40%3Ccvs.httpd.apache.org%3E
    https://lists.apache.org/thread.html/r84d043c2115176958562133d96d851495d712aa49da155d81f6733be%40%3Ccvs.httpd.apache.org%3E
    https://lists.apache.org/thread.html/r8c9983f1172a3415f915ddb7e14de632d2d0c326eb1285755a024165%40%3Ccvs.httpd.apache.org%3E
    https://lists.apache.org/thread.html/r9ea3538f229874c80a10af473856a81fbf5f694cd7f471cc679ba70b%40%3Ccvs.httpd.apache.org%3E
    https://lists.apache.org/thread.html/r9f93cf6dde308d42a9c807784e8102600d0397f5f834890708bf6920%40%3Ccvs.httpd.apache.org%3E
    https://lists.apache.org/thread.html/rad01d817195e6cc871cb1d73b207ca326379a20a6e7f30febaf56d24%40%3Ccvs.httpd.apache.org%3E
    https://lists.apache.org/thread.html/rc4c53a0d57b2771ecd4b965010580db355e38137c8711311ee1073a8%40%3Ccvs.httpd.apache.org%3E
    https://lists.apache.org/thread.html/rdca61ae990660bacb682295f2a09d34612b7bb5f457577fe17f4d064%40%3Ccvs.httpd.apache.org%3E
    https://lists.apache.org/thread.html/rf6449464fd8b7437704c55f88361b66f12d5b5f90bcce66af4be4ba9%40%3Ccvs.httpd.apache.org%3E
    https://lists.apache.org/thread.html/rfbaf647d52c1cb843e726a0933f156366a806cead84fbd430951591b%40%3Ccvs.httpd.apache.org%3E
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10968
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12321
    https://www.redhat.com/archives/fedora-package-announce/2009-June/msg01173.html
    https://www.redhat.com/archives/fedora-package-announce/2009-June/msg01201.html
    https://www.redhat.com/archives/fedora-package-announce/2009-June/msg01228.html
    http://lists.apple.com/archives/security-announce/2009/Nov/msg00000.html
    http://marc.info/?l=bugtraq&m=129190899612998&w=2
    http://secunia.com/advisories/34724
    http://secunia.com/advisories/35284
    http://secunia.com/advisories/35360
    http://secunia.com/advisories/35395
    http://secunia.com/advisories/35444
    http://secunia.com/advisories/35487
    http://secunia.com/advisories/35565
    http://secunia.com/advisories/35710
    http://secunia.com/advisories/35797
    http://secunia.com/advisories/35843
    http://secunia.com/advisories/37221
    http://security.gentoo.org/glsa/glsa-200907-03.xml
    http://slackware.com/security/viewer.php?l=slackware-security&y=2009&m=slackware-security.538210
    http://support.apple.com/kb/HT3937
    http://svn.apache.org/viewvc?view=rev&revision=779880
    http://wiki.rpath.com/Advisories:rPSA-2009-0144
    http://www-01.ibm.com/support/docview.wss?uid=swg1PK88341
    http://www-01.ibm.com/support/docview.wss?uid=swg1PK91241
    http://www-01.ibm.com/support/docview.wss?uid=swg1PK99478
    http://www-01.ibm.com/support/docview.wss?uid=swg27014463
    http://www.apache.org/dist/apr/CHANGES-APR-UTIL-1.3
    http://www.debian.org/security/2009/dsa-1812
    http://www.mandriva.com/security/advisories?name=MDVSA-2009:131
    http://www.mandriva.com/security/advisories?name=MDVSA-2013:150
    http://www.oracle.com/technetwork/topics/security/cpuapr2013-1899555.html
    http://www.redhat.com/support/errata/RHSA-2009-1107.html
    http://www.redhat.com/support/errata/RHSA-2009-1108.html
    http://www.securityfocus.com/archive/1/507855/100/0/threaded
    http://www.securityfocus.com/bid/35221
    http://www.ubuntu.com/usn/usn-786-1
    http://www.ubuntu.com/usn/usn-787-1
    http://www.vupen.com/english/advisories/2009/1907
    http://www.vupen.com/english/advisories/2009/3184
    https://bugzilla.redhat.com/show_bug.cgi?id=503928
    https://exchange.xforce.ibmcloud.com/vulnerabilities/50964
    https://lists.apache.org/thread.html/8d63cb8e9100f28a99429b4328e4e7cebce861d5772ac9863ba2ae6f%40%3Ccvs.httpd.apache.org%3E
    https://lists.apache.org/thread.html/f7f95ac1cd9895db2714fa3ebaa0b94d0c6df360f742a40951384a53%40%3Ccvs.httpd.apache.org%3E
    https://lists.apache.org/thread.html/r57608dc51b79102f3952ae06f54d5277b649c86d6533dcd6a7d201f7%40%3Ccvs.httpd.apache.org%3E
    https://lists.apache.org/thread.html/r75cbe9ea3e2114e4271bbeca7aff96117b50c1b6eb7c4772b0337c1f%40%3Ccvs.httpd.apache.org%3E
    https://lists.apache.org/thread.html/r7dd6be4dc38148704f2edafb44a8712abaa3a2be120d6c3314d55919%40%3Ccvs.httpd.apache.org%3E
    https://lists.apache.org/thread.html/r84d043c2115176958562133d96d851495d712aa49da155d81f6733be%40%3Ccvs.httpd.apache.org%3E
    https://lists.apache.org/thread.html/r8c9983f1172a3415f915ddb7e14de632d2d0c326eb1285755a024165%40%3Ccvs.httpd.apache.org%3E
    https://lists.apache.org/thread.html/r9ea3538f229874c80a10af473856a81fbf5f694cd7f471cc679ba70b%40%3Ccvs.httpd.apache.org%3E
    https://lists.apache.org/thread.html/r9f93cf6dde308d42a9c807784e8102600d0397f5f834890708bf6920%40%3Ccvs.httpd.apache.org%3E
    https://lists.apache.org/thread.html/rad01d817195e6cc871cb1d73b207ca326379a20a6e7f30febaf56d24%40%3Ccvs.httpd.apache.org%3E
    https://lists.apache.org/thread.html/rc4c53a0d57b2771ecd4b965010580db355e38137c8711311ee1073a8%40%3Ccvs.httpd.apache.org%3E
    https://lists.apache.org/thread.html/rdca61ae990660bacb682295f2a09d34612b7bb5f457577fe17f4d064%40%3Ccvs.httpd.apache.org%3E
    https://lists.apache.org/thread.html/rf6449464fd8b7437704c55f88361b66f12d5b5f90bcce66af4be4ba9%40%3Ccvs.httpd.apache.org%3E
    https://lists.apache.org/thread.html/rfbaf647d52c1cb843e726a0933f156366a806cead84fbd430951591b%40%3Ccvs.httpd.apache.org%3E
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10968
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12321
    https://www.redhat.com/archives/fedora-package-announce/2009-June/msg01173.html
    https://www.redhat.com/archives/fedora-package-announce/2009-June/msg01201.html
    https://www.redhat.com/archives/fedora-package-announce/2009-June/msg01228.html

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High