CVE-2021-20296: Null Pointer Dereference
First published: Mon Mar 15 2021(Updated: )
A flaw was found in OpenEXR in versions before 3.0.0-beta. A crafted input file supplied by an attacker, that is processed by the Dwa decompression functionality of OpenEXR's IlmImf library, could cause a NULL pointer dereference. The highest threat from this vulnerability is to system availability.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Openexr Openexr | <2.4.3 | |
| Openexr Openexr | >=2.5.0<2.5.4 | |
| Debian Debian Linux | =9.0 | |
| Debian Debian Linux | =10.0 | |
| redhat/OpenEXR | <3.0.0 | 3.0.0 |
| redhat/OpenEXR | <2.5.4 | 2.5.4 |
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Reference Links
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=24854
- https://bugzilla.redhat.com/show_bug.cgi?id=1939141
- https://lists.debian.org/debian-lts-announce/2021/07/msg00001.html
- https://lists.debian.org/debian-lts-announce/2022/12/msg00022.html
- https://security.gentoo.org/glsa/202107-27
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1939169
- https://github.com/AcademySoftwareFoundation/openexr/commit/b0c63c0b96eb9b0d3998f603e12f9f414fb0d44a
Frequently Asked Questions
What is the vulnerability ID of this flaw?
The vulnerability ID of this flaw is CVE-2021-20296.
What is the severity of CVE-2021-20296?
The severity of CVE-2021-20296 is medium, with a CVSS score of 5.3.
Which software versions are affected by CVE-2021-20296?
Versions before 3.0.0-beta of OpenEXR are affected by CVE-2021-20296.
What is the impact of CVE-2021-20296?
The highest threat from CVE-2021-20296 is to system availability.
Are there any references for CVE-2021-20296?
Yes, you can find references for CVE-2021-20296 at the following links: [Link 1](https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=24854), [Link 2](https://bugzilla.redhat.com/show_bug.cgi?id=1939141), [Link 3](https://lists.debian.org/debian-lts-announce/2021/07/msg00001.html).
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