Bug 1475754 (CVE-2017-11683)

Summary: CVE-2017-11683 exiv2: Reachable assertion in the Internal::TiffReader::visitDirectory function
Product: [Other] Security Response Reporter: Andrej Nemec <anemec>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED WONTFIX QA Contact:
Severity: low Docs Contact:
Priority: low    
Version: unspecifiedCC: alan.pater, jgrulich, mcepl, michel, rdieter, v.owl337
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
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Last Closed: 2017-07-27 09:26:11 UTC Type: ---
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Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 1475124, 1475370    
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Triggered by "./exiv2 $POC" none

Description Andrej Nemec 2017-07-27 09:24:45 UTC 
There is a reachable assertion in the Internal::TiffReader::visitDirectory function in tiffvisitor.cpp of Exiv2 0.26 that will lead to a denial of service attack via crafted input.

Product bug:

https://bugzilla.redhat.com/show_bug.cgi?id=1475124
Comment 1 Andrej Nemec 2017-07-27 09:25:29 UTC 
Created exiv2 tracking bugs for this issue:

Affects: fedora-all [bug 1475370]
Comment 2 owl337 2017-07-27 13:50:36 UTC 
Created attachment 1305393 [details]
Triggered by  "./exiv2 $POC"