Buffer overflow in Apache Apr-Util
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.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v2 metric
CVSS v2 base score 4.3 (Medium). Vector: AV:N/AC:M/Au:N/C:N/I:N/A:P. This CVE predates CVSS v3 and has no v3 score from NVD.
EPSS exploit prediction
EPSS: 0.085 (95.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 95th percentile — 95.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.085 · newest: 0.085 · change: 0.000
Affected products
- Apache Apr-Util — versions 0.9.1, 0.9.2, 0.9.3
- Apache HTTP Server
Weakness classification (CWE)
Public proof-of-concept exploits
References
- secunia.com/advisories/35487 (Third Party Advisory, third-party-advisory)
- www.debian.org/security/2009/dsa-1812 (vendor-advisory, Patch, Third Party Advisory)
- www.apache.org/dist/apr/CHANGES-APR-UTIL-1.3 (Third Party Advisory)
- www.vupen.com/english/advisories/2009/1907 (Third Party Advisory, vdb-entry)
- www.redhat.com/archives/fedora-package-announce/2009-June/msg01228.html (vendor-advisory, Third Party Advisory)
- secunia.com/advisories/35444 (Third Party Advisory, third-party-advisory)
- www-01.ibm.com/support/docview.wss (vendor-advisory, Third Party Advisory)
- www.mandriva.com/security/advisories (vendor-advisory, Third Party Advisory)
- secunia.com/advisories/35360 (Third Party Advisory, Vendor Advisory, third-party-advisory)
- bugzilla.redhat.com/show_bug.cgi (Patch, Third Party Advisory, Issue Tracking)
Frequently asked questions
- What is CVE-2009-0023?
- CVE-2009-0023 is a vulnerability in Apache Apr-Util, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. Published 2009-06-08.
- Is CVE-2009-0023 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.