Bug 461599 (CVE-2008-3964) - CVE-2008-3964 libpng: off-by-one error in png_push_read_zTXt()
Summary: CVE-2008-3964 libpng: off-by-one error in png_push_read_zTXt()
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2008-3964
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 461620
Blocks:
TreeView+ depends on / blocked
 
Reported: 2008-09-09 11:47 UTC by Tomas Hoger
Modified: 2021-11-12 19:52 UTC (History)
1 user (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2008-09-10 07:33:01 UTC
Embargoed:


Attachments (Terms of Use)

Description Tomas Hoger 2008-09-09 11:47:09 UTC
libpng upstream version 1.2.32beta01 fixes an insufficient memory allocation flaw in the "png_push_read_zTXt()" function in pngpread.c, that results in a write of once null byte past the end of allocated buffer.

References:
http://sourceforge.net/project/shownotes.php?release_id=624518
http://www.openwall.com/lists/oss-security/2008/09/09/3

Upstream bug report:
http://sourceforge.net/tracker/index.php?func=detail&aid=2095669&group_id=5624&atid=105624

As noted in the upstream bug report, this issue was introduced upstream in libpng-1.2.30beta04 and currently only affect 1.2.31 as available in Fedora Rawhide.  Versions of libpng as shipped in Red Hat Enterprise Linux 2.1, 3, 4 and 5 are not affected by this flaw.

Comment 3 Tomas Hoger 2008-09-10 07:33:01 UTC
Fixed now in Fedora Rawhide, no other affected product -> closing.


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