Your submission was sent successfully! Close

You have successfully unsubscribed! Close

Thank you for signing up for our newsletter!
In these regular emails you will find the latest updates about Ubuntu and upcoming events where you can meet our team.Close

CVE-2021-31873

Published: 30 April 2021

An issue was discovered in klibc before 2.0.9. Additions in the malloc() function may result in an integer overflow and a subsequent heap buffer overflow.

Notes

AuthorNote
mdeslaur
only used in initramfs, doesn't parse untrusted data

Priority

Low

Cvss 3 Severity Score

9.8

Score breakdown

Status

Package Release Status
klibc
Launchpad, Ubuntu, Debian
focal
Released (2.0.7-1ubuntu5.1)
hirsute Ignored
(end of life)
jammy Not vulnerable
(2.0.8-6.1ubuntu2)
upstream
Released (2.0.8-6)
xenial
Released (2.0.4-8ubuntu1.16.04.4+esm1)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
impish Not vulnerable
(2.0.8-6.1ubuntu2)
bionic
Released (2.0.4-9ubuntu2.1)
trusty
Released (2.0.3-0ubuntu1.14.04.3+esm2)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
groovy Ignored
(end of life)
Patches:
upstream: https://git.kernel.org/pub/scm/libs/klibc/klibc.git/commit/?id=a31ae8c508fc8d1bca4f57e9f9f88127572d5202

Severity score breakdown

Parameter Value
Base score 9.8
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H