SB2009120401 - Out-of-bounds read in libexpat expat 

CSH
CYBERSECURITY HELP
Sign In REGISTER

Main Vulnerability Database SB2009120401

SB2009120401 - Out-of-bounds read in libexpat expat

Published: December 4, 2009 Updated: July 24, 2020

Security Bulletin ID SB2009120401
Severity
Medium
Patch available
NO
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Denial of service

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 security vulnerability.


1) Out-of-bounds read (CVE-ID: CVE-2009-3560)

The vulnerability allows a remote attacker to perform denial of service (DoS) attack.

The vulnerability exists due to a boundary condition when processing 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 within the The big2_toUtf8 function in lib/xmltok.c in libexpat in Expat 2.0.1, as used. A remote attacker can create a specially crafted file, pass it to the application, trigger out-of-bounds read error and crash the affected application.


Remediation

Cybersecurity Help is not aware of any official remediation provided by the vendor.

References