CVE-2021-20299: Null Pointer Dereference
First published: Mon Mar 15 2021(Updated: )
A flaw was found in OpenEXR's Multipart input file functionality. A crafted multi-part input file with no actual parts can trigger 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 | <2.5.4 | |
| Debian Debian Linux | =10.0 | |
| redhat/OpenEXR | <3.0.0 | 3.0.0 |
Remedy
https://github.com/AcademySoftwareFoundation/openexr/commit/25e9515b06a6bc293d871622b8cafaee7af84e0f
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Reference Links
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=25740
- https://bugzilla.redhat.com/show_bug.cgi?id=1939154
- https://github.com/AcademySoftwareFoundation/openexr/commit/25e9515b06a6bc293d871622b8cafaee7af84e0f
- https://lists.debian.org/debian-lts-announce/2022/12/msg00022.html
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1939175
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1939155
Frequently Asked Questions
What is CVE-2021-20299?
CVE-2021-20299 is a vulnerability found in OpenEXR's Multipart input file functionality that can trigger a NULL pointer dereference and lead to system availability issues.
What is the severity of CVE-2021-20299?
The severity of CVE-2021-20299 is high, with a severity value of 7.5.
What software is affected by CVE-2021-20299?
OpenEXR versions up to and excluding 2.5.4, Debian Linux version 10.0, and Red Hat OpenEXR version up to and excluding 3.0.0 are affected by CVE-2021-20299.
How can CVE-2021-20299 be exploited?
CVE-2021-20299 can be exploited by using a crafted multi-part input file with no actual parts.
How can I fix CVE-2021-20299?
To fix CVE-2021-20299, update to OpenEXR version 2.5.4 or later, Debian Linux version 10.0 or later, or Red Hat OpenEXR version 3.0.0 or later.
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