Bug 1958807 (CVE-2021-27815)

Summary: CVE-2021-27815 libexif: NULL Pointer Deference may lead to DoS by uploading a malicious JPEG file
Product: [Other] Security Response Reporter: Marian Rehak <mrehak>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED NOTABUG QA Contact:
Severity: low Docs Contact:
Priority: low    
Version: unspecifiedCC: ajax, caillon+fedoraproject, gnome-sig, gwync, jgrulich, rdieter, rhbugs, rhughes, rstrode, sandmann, thomasj, yselkowi
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
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Last Closed: 2021-05-17 09:35:13 UTC Type: ---
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
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Bug Depends On: 1958808, 1958809    
Bug Blocks: 1958810    

Description Marian Rehak 2021-05-10 08:06:29 UTC 
NULL Pointer Deference in the exif command line tool, when printing out XML formatted EXIF data, in exif v0.6.22 and earlier allows attackers to cause a Denial of Service (DoS) by uploading a malicious JPEG file.

Upstream Reference:

https://github.com/libexif/exif/issues/4
Comment 1 Marian Rehak 2021-05-10 08:07:41 UTC 
Created exif tracking bugs for this issue:

Affects: fedora-all [bug 1958808]


Created libexif tracking bugs for this issue:

Affects: fedora-all [bug 1958809]
Comment 2 Stefan Cornelius 2021-05-17 09:37:31 UTC 
Patch:
https://github.com/libexif/exif/commit/f6334d9d32437ef13dc902f0a88a2be0063d9d1c