CVE-2021-20298
First published: Mon Mar 15 2021(Updated: )
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.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Openexr Openexr | <=2.5.7 | |
| Debian Debian Linux | =10.0 | |
| redhat/OpenEXR | <3.0.0 | 3.0.0 |
Remedy
https://github.com/AcademySoftwareFoundation/openexr/commit/85fd638ae0d5fa132434f4cbf32590261c1dba97
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Reference Links
- https://access.redhat.com/security/cve/CVE-2021-20298
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=25913
- https://bugzilla.redhat.com/show_bug.cgi?id=1939156
- https://github.com/AcademySoftwareFoundation/openexr/commit/85fd638ae0d5fa132434f4cbf32590261c1dba97
- https://github.com/AcademySoftwareFoundation/openexr/pull/843
- https://lists.debian.org/debian-lts-announce/2022/12/msg00022.html
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1944455
Frequently Asked Questions
What is CVE-2021-20298?
CVE-2021-20298 is a vulnerability found in OpenEXR's B44Compressor that allows an attacker to exhaust all accessible memory by submitting a crafted file.
What is the severity of CVE-2021-20298?
The severity of CVE-2021-20298 is high with a CVSS score of 7.5.
Which software is affected by CVE-2021-20298?
OpenEXR version 2.5.7, Debian Linux version 10.0, and Red Hat OpenEXR version up to 3.0.0 are affected by CVE-2021-20298.
How can an attacker exploit CVE-2021-20298?
An attacker can exploit CVE-2021-20298 by submitting a crafted file to be processed by OpenEXR, which will exhaust all accessible memory.
Is there a fix for CVE-2021-20298?
Yes, the fix for CVE-2021-20298 is to update to OpenEXR version 3.0.0.
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