Bug 2003801 (CVE-2020-19143)

Summary: CVE-2020-19143 libtiff: buffer overflow in TIFFVGetField() in libtiff/tif_dir.c
Product: [Other] Security Response Reporter: Guilherme de Almeida Suckevicz <gsuckevi>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED NOTABUG QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: caswilli, erik-fedora, fjansen, jnakfour, jwong, kaycoth, mike, nforro, phracek, rh-spice-bugs, vmugicag
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
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Last Closed: 2021-09-21 18:21:31 UTC Type: ---
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 2003803    
Bug Blocks: 2003804    

Description Guilherme de Almeida Suckevicz 2021-09-13 18:41:03 UTC 
Buffer Overflow in LibTiff v4.0.10 allows attackers to cause a denial of service via the "TIFFVGetField" funtion in the component 'libtiff/tif_dir.c'.

References:
http://bugzilla.maptools.org/show_bug.cgi?id=2851
https://gitlab.com/libtiff/libtiff/-/issues/158

Upstream patch:
https://gitlab.com/libtiff/libtiff/-/merge_requests/119
Comment 1 Guilherme de Almeida Suckevicz 2021-09-13 18:42:31 UTC 
Created mingw-libtiff tracking bugs for this issue:

Affects: fedora-all [bug 2003803]
Comment 2 Garrett Tucker 2021-09-15 17:32:58 UTC 
No RHEL Affects. The affected version was never introduced into a RHEL Stream and as such we are not affected by this flaw.
Comment 3 juneau 2021-09-21 13:48:39 UTC 
No hosted services affects if flaw is limited to 4.0.10 as that version is not present.
Comment 4 Product Security DevOps Team 2021-09-21 18:21:31 UTC 
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2020-19143