CVE-2020-27638
First published: Thu Oct 22 2020(Updated: )
receive.c in fastd before v21 allows denial of service (assertion failure) when receiving packets with an invalid type code.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| fastd | <21.0 | |
| Debian | =9.0 | |
| Fedora | =31 | |
| Fedora | =32 | |
| Fedora | =33 |
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Reference Links
- https://bugs.debian.org/972521
- https://fastd.readthedocs.io/en/stable/releases/v21.html
- https://github.com/NeoRaider/fastd/commit/737925113363b6130879729cdff9ccc46c33eaea
- https://lists.debian.org/debian-lts-announce/2020/10/msg00025.html
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/D2LNSF2LI4RQ7BVGHTJQUJWP7RVGHDTK/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GUZ3AGTAXH7OOP45F5WXBVRQ3IDWUR7M/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WSMH65GHKHMJAK2VMPROIPIUS4IA63CW/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GUZ3AGTAXH7OOP45F5WXBVRQ3IDWUR7M/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WSMH65GHKHMJAK2VMPROIPIUS4IA63CW/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/D2LNSF2LI4RQ7BVGHTJQUJWP7RVGHDTK/
Frequently Asked Questions
What is the severity of CVE-2020-27638?
CVE-2020-27638 has been classified as a denial of service vulnerability resulting from an assertion failure.
What versions are affected by CVE-2020-27638?
CVE-2020-27638 affects fastd versions prior to v21, as well as specific Debian and Fedora releases.
How do I fix CVE-2020-27638?
To fix CVE-2020-27638, upgrade fastd to version 21.0 or higher.
What software is impacted by CVE-2020-27638?
CVE-2020-27638 impacts multiple software distributions, including fastd, Debian 9.0, and Fedora versions 31, 32, and 33.
Can CVE-2020-27638 lead to system crashes?
Yes, CVE-2020-27638 can cause denial of service, potentially leading to system crashes.
- agent/type
- collector/mitre-cve
- source/MITRE
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- agent/tags
- agent/softwarecombine
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- vendor/fastd project
- canonical/fastd
- vendor/debian
- canonical/debian
- version/debian/9.0
- vendor/fedoraproject
- canonical/fedora
- version/fedora/31
- version/fedora/32
- version/fedora/33