CVE-2020-27638

Publication date 22 October 2020

Last updated 25 August 2025

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

7.5 · High

Score breakdown

Description

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

Status

Package Ubuntu Release Status
fastd 20.10 groovy
Fixed 19-3ubuntu0.1
20.04 LTS focal
Fixed 18-3ubuntu0.1
18.04 LTS bionic
Fixed 18-3ubuntu0.18.04.1
16.04 LTS xenial
Fixed 17-4ubuntu0.1
14.04 LTS trusty Not in release

Severity score breakdown

Parameter Value
Base score 7.5 · High
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

Related Ubuntu Security Notices (USN)

Other references