CVE-2021-42779: Use After Free
First published: Wed Oct 20 2021(Updated: )
A heap use after free issue was found in Opensc before version 0.22.0 in sc_file_valid.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Opensc Project Opensc | <0.22.0 | |
| Fedoraproject Fedora | =33 | |
| Redhat Enterprise Linux | =7.0 | |
| Redhat Enterprise Linux | =8.0 | |
| redhat/opensc | <0.22.0 | 0.22.0 |
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Reference Links
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=28843
- https://bugzilla.redhat.com/show_bug.cgi?id=2016086
- https://github.com/OpenSC/OpenSC/commit/1db88374
- https://lists.debian.org/debian-lts-announce/2023/06/msg00025.html
- https://security.gentoo.org/glsa/202209-03
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2018903
Frequently Asked Questions
What is the severity of CVE-2021-42779?
The severity of CVE-2021-42779 is medium with a CVSS score of 5.3.
What is the affected software for CVE-2021-42779?
The affected software for CVE-2021-42779 includes Opensc before version 0.22.0, Fedoraproject Fedora 33, Redhat Enterprise Linux 7.0, Redhat Enterprise Linux 8.0, and redhat/opensc with version up to exclusive 0.22.0.
How can I fix CVE-2021-42779?
To fix CVE-2021-42779, it is recommended to update Opensc to version 0.22.0 or higher.
What is the Common Weakness Enumeration (CWE) ID for CVE-2021-42779?
The Common Weakness Enumeration (CWE) ID for CVE-2021-42779 is CWE-416.
Where can I find more information about CVE-2021-42779?
More information about CVE-2021-42779 can be found at the following references: [Reference 1](https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=28843), [Reference 2](https://bugzilla.redhat.com/show_bug.cgi?id=2016086), [Reference 3](https://github.com/OpenSC/OpenSC/commit/1db88374).
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