CVE-2009-3720

Severity CVSS v4.0:

Pending analysis

Type:

Unavailable / Other

Publication date:

03/11/2009

Last modified:

09/04/2025

Description

The updatePosition function in lib/xmltok_impl.c in libexpat in Expat 2.0.1, as used in Python, PyXML, w3c-libwww, and other software, allows context-dependent attackers to cause a denial of service (application crash) via an XML document with crafted UTF-8 sequences that trigger a buffer over-read, a different vulnerability than CVE-2009-2625.

Impact

Vector 2.0

AV:N/AC:L/Au:N/C:N/I:N/A:P CVSS v2.0 Severity and Metrics:

Base Score: 5.00 MEDIUM
Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P

Attack Vector (AV): Network
Attack Complexity (AC): Low
Authentication (Au): None
Confidentiality (C): None
Integrity (I): None
Availability (A): Physical

Base Score 2.0

5.00

Severity 2.0

MEDIUM

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:a:libexpat_project:libexpat:2.0.1:::::::*
cpe:2.3:a:a_m_kuchling:pyxml::::::::
cpe:2.3:a:python:python::::::::
cpe:2.3:a:apache:http_server::::::::	2.0.35 (including)	2.0.64 (excluding)
cpe:2.3:a:apache:http_server::::::::	2.2.0 (including)	2.2.17 (excluding)

To consult the complete list of CPE names with products and versions, see this page

CVE-2009-3720

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools