CVE Database


Impact: Moderate
Public: 2011-07-07
Bugzilla: 720612: CVE-2011-2692 libpng: Invalid read when handling empty sCAL chunks


The MITRE CVE dictionary describes this issue as:

The png_handle_sCAL function in pngrutil.c in libpng 1.0.x before 1.0.55, 1.2.x before 1.2.45, 1.4.x before 1.4.8, and 1.5.x before 1.5.4 does not properly handle invalid sCAL chunks, which allows remote attackers to cause a denial of service (memory corruption and application crash) or possibly have unspecified other impact via a crafted PNG image that triggers the reading of uninitialized memory.

Find out more about CVE-2011-2692 from the MITRE CVE dictionary and NIST NVD.

CVSS v2 metrics

Base Score: 4.3
Base Metrics: AV:N/AC:M/Au:N/C:N/I:N/A:P
Access Vector: Network
Access Complexity: Medium
Authentication: None
Confidentiality Impact: None
Integrity Impact: None
Availability Impact: Partial

Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).

Red Hat security errata

Platform Errata Release Date
Red Hat Enterprise Linux version 4 RHSA-2011:1103 July 28, 2011
Red Hat Enterprise Linux version 5 (libpng) RHSA-2011:1104 July 28, 2011
Red Hat Enterprise Linux version 6 (libpng) RHSA-2011:1105 July 28, 2011

External References

This page is generated automatically and has not been checked for errors or omissions.

For clarification or corrections please contact the Red Hat Security Response Team.