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CVE-2020-21547

Published: 17 September 2021

Libsixel 1.8.2 contains a heap-based buffer overflow in the dither_func_fs function in tosixel.c.

Priority

Medium

Cvss 3 Severity Score

8.8

Score breakdown

Status

Package Release Status
libsixel
Launchpad, Ubuntu, Debian
impish Not vulnerable

bionic Needs triage

focal Needs triage

hirsute Not vulnerable
(1.8.6-2)
trusty Does not exist

upstream
Released (1.8.6-1)
jammy Not vulnerable

kinetic Not vulnerable

lunar Not vulnerable

xenial Needs triage

mantic Not vulnerable

Severity score breakdown

Parameter Value
Base score 8.8
Attack vector Network
Attack complexity Low
Privileges required None
User interaction Required
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H