Bug 839189 (CVE-2012-2841)

Summary: CVE-2012-2841 libexif: "exif_entry_get_value()" integer underflow
Product: [Other] Security Response Reporter: Stefan Cornelius <scorneli>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED ERRATA QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: jrusnack, rhughes, security-response-team
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard: impact=moderate,public=20120712,reported=20120709,source=researcher,cvss2=5.1/AV:N/AC:H/Au:N/C:P/I:P/A:P,rhel-5/libexif=affected,rhel-6/libexif=affected,fedora-all/libexif=affected,cwe=CWE-190[auto]
Fixed In Version: libexif 0.6.21 Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2013-05-08 14:27:33 EDT Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---
Bug Depends On: 839913, 839914, 839915, 839916, 839917    
Bug Blocks: 839036    

Description Stefan Cornelius 2012-07-11 03:40:27 EDT
An integer underflow in the exif_entry_get_value function can cause a heap overflow and potentially arbitrary code execution while formatting an EXIF tag, if the function is called with a buffer size parameter equal to zero or one.
Comment 3 Stefan Cornelius 2012-07-13 04:21:17 EDT
Created libexif tracking bugs for this issue

Affects: fedora-all [bug 839917]
Comment 4 Stefan Cornelius 2012-08-10 04:52:11 EDT
Upstream advisory:
Comment 5 Murray McAllister 2012-08-22 02:51:50 EDT

Red Hat would like to thank Dan Fandrich for reporting this issue.
Comment 6 errata-xmlrpc 2012-09-11 14:17:01 EDT
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 2013-02-07 21:14:25 EST
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 2013-02-07 21:34:44 EST
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.