SB2009110301 - Out-of-bounds read in libexpat expat 

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Main Vulnerability Database SB2009110301

SB2009110301 - Out-of-bounds read in libexpat expat

Published: November 3, 2009 Updated: July 24, 2020

Security Bulletin ID SB2009110301
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-2009-3720)

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 crafted UTF-8 sequences that trigger a buffer over-read, a different vulnerability than CVE-2009-2625 within the The updatePosition function in lib/xmltok_impl.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