Bug 1939156 (CVE-2021-20298) - CVE-2021-20298 OpenEXR: Out-of-memory in B44Compressor
Summary: CVE-2021-20298 OpenEXR: Out-of-memory in B44Compressor
Keywords:
Status: CLOSED WONTFIX
Alias: CVE-2021-20298
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1944455 1944456 1944457 1944458 1944459
Blocks: 1929339
TreeView+ depends on / blocked
 
Reported: 2021-03-15 17:27 UTC by Michael Kaplan
Modified: 2022-09-08 15:02 UTC (History)
5 users (show)

Fixed In Version: OpenEXR 3.0.0-beta
Doc Type: If docs needed, set a value
Doc Text:
A flaw was found in OpenEXR's B44Compressor. This flaw allows an attacker who can submit a crafted file to be processed by OpenEXR, to exhaust all memory accessible to the application. The highest threat from this vulnerability is to system availability.
Clone Of:
Environment:
Last Closed: 2021-11-02 23:20:49 UTC
Embargoed:

Attachments (Terms of Use)

Description Michael Kaplan 2021-03-15 17:27:16 UTC 
Out-of-memory in openexr_exrenvmap_fuzzer
Comment 1 Michael Kaplan 2021-03-15 17:27:20 UTC 
External References:

https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=25913
Comment 2 Todd Cullum 2021-03-30 00:21:56 UTC 
Flaw summary:

OpenEXR/IlmImf/ImfB44Compressor.cpp used a temporary buffer _tmpBuffer. Allocation of this buffer was twice the size necessary. This could lead to out-of-memory errors and a denial of service.
Comment 3 Todd Cullum 2021-03-30 00:22:10 UTC 
Upstream patch commit: https://github.com/AcademySoftwareFoundation/openexr/commit/85fd638ae0d5fa132434f4cbf32590261c1dba97
Comment 4 Todd Cullum 2021-03-30 00:30:01 UTC 
Created OpenEXR tracking bugs for this issue:

Affects: fedora-all [bug 1944455]
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