CVE-2021-3477: Integer Overflow
First published: Mon Mar 15 2021(Updated: )
Heap-buffer-overflow in Imf_2_5::DeepTiledInputFile::readPixelSampleCounts
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 | <2.4.3 | 2.4.3 |
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Reference Links
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=26956
- https://bugzilla.redhat.com/show_bug.cgi?id=1939159
- 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=1939185
- https://github.com/AcademySoftwareFoundation/openexr/commit/467be80b75642efbbe6bdace558079f68c16acb1
- https://github.com/AcademySoftwareFoundation/openexr/blob/master/CHANGES.md#version-243-may-17-2021
Frequently Asked Questions
What is CVE-2021-3477?
CVE-2021-3477 is a vulnerability in OpenEXR's deep tile sample size calculations in versions before 3.0.0-beta. An attacker can trigger an integer overflow, leading to an out-of-bounds read.
What is the severity of CVE-2021-3477?
The severity of CVE-2021-3477 is medium with a CVSS score of 5.5.
Which software versions are affected by CVE-2021-3477?
Versions before 3.0.0-beta of OpenEXR and Debian Linux 9.0 and 10.0 are affected by CVE-2021-3477.
How can an attacker exploit CVE-2021-3477?
An attacker can exploit CVE-2021-3477 by submitting a crafted file to be processed by OpenEXR, triggering an integer overflow and leading to an out-of-bounds read.
Are there any references for CVE-2021-3477?
Yes, you can find references for CVE-2021-3477 at the following links: [link1](https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=26956), [link2](https://bugzilla.redhat.com/show_bug.cgi?id=1939159), [link3](https://lists.debian.org/debian-lts-announce/2021/07/msg00001.html).
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