Bug 839188 (CVE-2012-2840) - CVE-2012-2840 libexif: "exif_convert_utf16_to_utf8()" off-by-one
Summary: CVE-2012-2840 libexif: "exif_convert_utf16_to_utf8()" off-by-one
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2012-2840
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: 839913 839914 839915 839916 839917
Blocks: 839036
TreeView+ depends on / blocked
 
Reported: 2012-07-11 07:38 UTC by Stefan Cornelius
Modified: 2023-05-12 20:13 UTC (History)
3 users (show)

Fixed In Version: libexif 0.6.21
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2013-05-08 18:27:56 UTC
Embargoed:

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Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2012:1255 0 normal SHIPPED_LIVE Moderate: libexif security update 2012-09-11 22:12:47 UTC

Description Stefan Cornelius 2012-07-11 07:38:58 UTC 
An off-by-one error in the exif_convert_utf16_to_utf8 function in libexif/exif-entry.c in libexif 0.6.20 and earlier allows remote attackers to cause a denial of service or possibly execute arbitrary code via an image with crafted EXIF tags.
Comment 1 Vincent Danen 2012-07-12 20:00:47 UTC 
This now public via exif 0.6.21:

http://libexif.cvs.sourceforge.net/viewvc/libexif/libexif/ChangeLog?revision=1.370
http://libexif.cvs.sourceforge.net/viewvc/libexif/libexif/libexif/exif-utils.c?r1=1.16&r2=1.17&view=patch
Comment 3 Stefan Cornelius 2012-07-13 08:19:14 UTC 
Created libexif tracking bugs for this issue

Affects: fedora-all [bug 839917]
Comment 4 Stefan Cornelius 2012-08-10 08:52:19 UTC 
Upstream advisory:
http://sourceforge.net/mailarchive/message.php?msg_id=29534027
Comment 5 Murray McAllister 2012-08-22 06:50:19 UTC 
Acknowledgements:

Red Hat would like to thank Dan Fandrich for reporting this issue.
Comment 6 errata-xmlrpc 2012-09-11 18:16:59 UTC 
This issue has been addressed in following products:

  Red Hat Enterprise Linux 6
  Red Hat Enterprise Linux 5

Via RHSA-2012:1255 https://rhn.redhat.com/errata/RHSA-2012-1255.html
Comment 7 Fedora Update System 2013-02-08 02:14:17 UTC 
libexif-0.6.21-2.fc16 has been pushed to the Fedora 16 stable repository.  If problems still persist, please make note of it in this bug report.
Comment 8 Fedora Update System 2013-02-08 02:34:37 UTC 
libexif-0.6.21-2.fc17 has been pushed to the Fedora 17 stable repository.  If problems still persist, please make note of it in this bug report.
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