Bug 1745951 (CVE-2019-14973) - CVE-2019-14973 libtiff: integer overflow in _TIFFCheckMalloc and _TIFFCheckRealloc in tif_aux.c
Summary: CVE-2019-14973 libtiff: integer overflow in _TIFFCheckMalloc and _TIFFCheckRe...
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2019-14973
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: 1745952 1755703 1755704 1755705
Blocks: 1745954
TreeView+ depends on / blocked
 
Reported: 2019-08-27 10:14 UTC by Dhananjay Arunesh
Modified: 2020-12-17 10:52 UTC (History)
4 users (show)

Fixed In Version:
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Environment:
Last Closed: 2020-04-28 16:34:01 UTC
Embargoed:

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System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2020:1688 0 None None None 2020-04-28 15:40:51 UTC
Red Hat Product Errata RHSA-2020:3902 0 None None None 2020-09-29 19:41:39 UTC

Description Dhananjay Arunesh 2019-08-27 10:14:27 UTC 
A vulnerability was found in _TIFFCheckMalloc and _TIFFCheckRealloc in tif_aux.c in LibTIFF through 4.0.10mishandle Integer Overflow checks because they rely on compiler behavior that is undefined by the applicable C standards. This can, for example, lead to an application crash.

Reference:
https://gitlab.com/libtiff/libtiff/merge_requests/90
Comment 1 Dhananjay Arunesh 2019-08-27 10:14:44 UTC 
Created libtiff tracking bugs for this issue:

Affects: fedora-all [bug 1745952]
Comment 2 Huzaifa S. Sidhpurwala 2019-09-26 05:47:16 UTC 
Analysis:

This is more of a hardening then a flaw. libtiff used an unsafe way to detect overflow in multiplication of signed types, which was implementation dependent. The issue is fixed by adding proper integer overflow checks.

Commit: https://gitlab.com/libtiff/libtiff/commit/2218055ca67d84be596a13080e8f50f22116555c
Comment 8 errata-xmlrpc 2020-04-28 15:40:50 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2020:1688 https://access.redhat.com/errata/RHSA-2020:1688
Comment 9 Product Security DevOps Team 2020-04-28 16:34:01 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-2019-14973
Comment 11 errata-xmlrpc 2020-09-29 19:41:34 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2020:3902 https://access.redhat.com/errata/RHSA-2020:3902
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