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CVE-2021-28831

Publication date 19 March 2021

Last updated 24 July 2024

Ubuntu priority

Low

Why this priority?

Cvss 3 Severity Score

7.5 · High

Score breakdown

decompress_gunzip.c in BusyBox through 1.32.1 mishandles the error bit on the huft_build result pointer, with a resultant invalid free or segmentation fault, via malformed gzip data.

Status

Package Ubuntu Release Status
busybox 23.04 lunar
Fixed 1:1.30.1-7ubuntu2
22.10 kinetic
Fixed 1:1.30.1-7ubuntu2
22.04 LTS jammy
Fixed 1:1.30.1-7ubuntu2
21.10 impish
Fixed 1:1.30.1-6ubuntu3.1
21.04 hirsute
Fixed 1:1.30.1-6ubuntu2.1
20.10 groovy Ignored end of life
20.04 LTS focal
Fixed 1:1.30.1-4ubuntu6.4
18.04 LTS bionic
Fixed 1:1.27.2-2ubuntu3.4
16.04 LTS xenial
14.04 LTS trusty

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Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package Patch details
busybox

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