Buffer overflow in Apache Http Server
CVE-2009-3560
The big2_toUtf8 function in lib/xmltok.c in libexpat in Expat 2.0.1, as used in the XML-Twig module for Perl, allows context-dependent attackers to cause a denial of service (application crash) via an XML document with malformed UTF-8 sequences that trigger a buffer over-read, related to the doProlog function in lib/xmlparse.c, a different vulnerability than CVE-2009-2625 and CVE-2009-3720.
Vulnerability class: Buffer Overflow
EPSS: 0.243 (97.6th percentile) — read the EPSS interpretation.
Affected products
- Apache Http_server
- Libexpat_project Libexpat — versions 2.0.1
- Xmltwig Xml-twig_for_perl
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- secalert@redhat.com (Permissions Required, x_refsource_CONFIRM)
- secalert@redhat.com (vendor-advisory, Mailing List, Third Party Advisory, x_refsource_SLACKWARE)
- secalert@redhat.com (vendor-advisory, x_refsource_FEDORA, Mailing List, Third Party Advisory)
- secalert@redhat.com (x_refsource_SECUNIA, Broken Link, third-party-advisory)
- secalert@redhat.com (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_SECTRACK)
- secalert@redhat.com (x_refsource_UBUNTU, vendor-advisory, VDB Entry, Third Party Advisory)
- secalert@redhat.com (x_refsource_SECUNIA, Broken Link, third-party-advisory)
- secalert@redhat.com (mailing-list, x_refsource_MLIST, Broken Link)
- secalert@redhat.com (vdb-entry, Broken Link, x_refsource_VUPEN)
- secalert@redhat.com (vendor-advisory, Third Party Advisory, x_refsource_DEBIAN)
Frequently asked questions
- What is CVE-2009-3560?
- CVE-2009-3560 is a vulnerability in Apache Http Server, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. Published 2009-12-04.
- Is CVE-2009-3560 known to be exploited?
- 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.