Upstream information

CVE-2008-6218 at MITRE

Description

Memory leak in the png_handle_tEXt function in pngrutil.c in libpng before 1.2.33 rc02 and 1.4.0 beta36 allows context-dependent attackers to cause a denial of service (memory exhaustion) via a crafted PNG file.

SUSE information

Overall state of this security issue: Resolved

This issue is currently rated as having important severity.

CVSS v2 Scores
  National Vulnerability Database
Base Score 7.1
Vector AV:N/AC:M/Au:N/C:N/I:N/A:C
Access Vector Network
Access Complexity Medium
Authentication None
Confidentiality Impact None
Integrity Impact None
Availability Impact Complete

Note from the SUSE Security Team

We are considering this a minor security issue. Out of memory conditions during image handling can be achieved in various ways, not the least by just passing a huge image. This specific leak is also linear (you need a PNG as large as the to be leaked memory), making it unlikely to be used. As the backport of the fix is quite intrusive, we decided in favour of stability not to backport and so not to fix this minor issue.

SUSE Bugzilla entries: 475533 [RESOLVED / FIXED], 854395 [RESOLVED / FIXED]

SUSE Security Advisories:

List of released packages

Product(s) Fixed package version(s) References
SUSE Linux Enterprise Server 11 SP1
  • libpng12-0 >= 1.2.31-5.25.1
  • libpng12-0-32bit >= 1.2.31-5.33.1
  • libpng12-0-x86 >= 1.2.31-5.31.1
Patchnames:
slessp1-libpng-devel
SUSE Linux Enterprise Server 11 SP2
  • libpng12-0 >= 1.2.31-5.25.1
  • libpng12-0-32bit >= 1.2.31-5.25.1
  • libpng12-0-x86 >= 1.2.31-5.25.1
SUSE Linux Enterprise Server 11 SP3
  • libpng12-0 >= 1.2.31-5.31.1
  • libpng12-0-32bit >= 1.2.31-5.31.1
  • libpng12-0-x86 >= 1.2.31-5.31.1
SUSE Linux Enterprise Server 11 SP4
  • libpng12-0 >= 1.2.31-5.33.1
  • libpng12-0-32bit >= 1.2.31-5.33.1
  • libpng12-0-x86 >= 1.2.31-5.33.1
SUSE Linux Enterprise Software Development Kit 11 SP4
  • libpng-devel >= 1.2.31-5.33.1
  • libpng-devel-32bit >= 1.2.31-5.33.1