Bug 293190

Summary:	<media-libs/libexif-0.6.19: Heap-based buffer overflow (CVE-2009-3895)
Product:	Gentoo Security	Reporter:	Alex Legler (RETIRED) <a3li>
Component:	Vulnerabilities	Assignee:	Gentoo Security <security>
Status:	RESOLVED FIXED
Severity:	trivial	CC:	graphics+disabled
Priority:	High
Version:	unspecified
Hardware:	All
OS:	Linux
URL:	http://article.gmane.org/gmane.comp.graphics.libexif.devel/806
Whiteboard:	~2 [noglsa]
Package list:		Runtime testing required:	---

Description Alex Legler (RETIRED) archtester

2009-11-14 17:33:04 UTC

From $URL:
PROBLEM DESCRIPTION

A flaw in libexif was discovered that causes a heap buffer to overflow
when certain invalid EXIF images are processed. The flaw occurs in the
tag fixup routine which attempts to convert in place an array of 8-bit
integers into 16-bit integers. This fixup is performed by default after
reading an image and until version 0.6.18 there was no easy way to disable
it, so it is likely that nearly all applications using libexif to read
images are vulnerable.

AFFECTED VERSIONS

Only libexif version 0.6.18 is affected by this flaw. Version 0.6.17 and
previous and 0.6.19 and later are not affected.

SOLUTION

Upgrade to version 0.6.19.

Comment 1 Alex Legler (RETIRED) archtester

2009-11-14 17:34:16 UTC

Stable is not affected.

Comment 2 Alex Legler (RETIRED) archtester

2009-11-14 17:43:51 UTC

*** Bug 293192 has been marked as a duplicate of this bug. ***

Comment 3 Markus Meier gentoo-dev

2009-11-14 20:33:36 UTC

bumped in cvs, 0.6.18 versions removed.

*exif-0.6.19 (14 Nov 2009)

  14 Nov 2009; Markus Meier <maekke@gentoo.org> -exif-0.6.18.ebuild,
  +exif-0.6.19.ebuild:
  version bump wrt bug #293190 and bug #293194

*libexif-0.6.19 (14 Nov 2009)

  14 Nov 2009; Markus Meier <maekke@gentoo.org> -libexif-0.6.18.ebuild,
  +libexif-0.6.19.ebuild:
  version bump wrt bug #293190 and bug #293194

Comment 4 Alex Legler (RETIRED) archtester

2009-11-14 20:34:38 UTC

Thanks. → noglsa

Comment 5 Alex Legler (RETIRED) archtester

2009-11-26 08:26:30 UTC

CVE-2009-3895 (http://nvd.nist.gov/nvd.cfm?cvename=CVE-2009-3895):
  Heap-based buffer overflow in the exif_entry_fix function (aka the
  tag fixup routine) in libexif/exif-entry.c in libexif 0.6.18 allows
  remote attackers to cause a denial of service or possibly execute
  arbitrary code via an invalid EXIF image.  NOTE: some of these
  details are obtained from third party information.