CVE-2020-27638

HIGH EPSS 81.4%
Published Oct 22, 20205y ago · Modified Jun 17, 20262w ago
7.5 CVSS 3.1
High
Find Similar
Published Oct 22, 2020 5y ago
Last Modified Jun 17, 2026 2w ago

Description

receive.c in fastd before v21 allows denial of service (assertion failure) when receiving packets with an invalid type code.

CVSS Details

Base Score
7.5
Exploitability
3.9
Impact
3.6
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
81.4% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-617

Affected Products 5

VendorProductVersionRange
fastd_projectfastd* <21.0
debiandebian_linux9.0any
fedoraprojectfedora31any
fedoraprojectfedora32any
fedoraprojectfedora33any

References 7

  • bugs.debian.org https://bugs.debian.org/972521
    Issue TrackingThird Party Advisory
  • fastd.readthedocs.io https://fastd.readthedocs.io/en/stable/releases/v21.html
    Broken LinkRelease NotesThird Party Advisory
  • github.com https://github.com/NeoRaider/fastd/commit/737925113363b6130879729cdff9ccc46c33eaea
    PatchThird Party Advisory
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2020/10/msg00025.html
    Mailing ListThird Party Advisory
  • lists.fedoraproject.org https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/D2LNSF2LI4RQ7BVGHTJQUJWP7RVGHDTK/
  • lists.fedoraproject.org https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GUZ3AGTAXH7OOP45F5WXBVRQ3IDWUR7M/
  • lists.fedoraproject.org https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WSMH65GHKHMJAK2VMPROIPIUS4IA63CW/

Remediation

  • github.com https://github.com/NeoRaider/fastd/commit/737925113363b6130879729cdff9ccc46c33eaea
    PatchThird Party Advisory