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CVE-2021-45909

Published: 28 December 2021

An issue was discovered in gif2apng 1.9. There is a heap-based buffer overflow vulnerability in the DecodeLZW function. It allows an attacker to write a large amount of arbitrary data outside the boundaries of a buffer.

Priority

Medium

Cvss 3 Severity Score

7.8

Score breakdown

Status

Package Release Status
gif2apng
Launchpad, Ubuntu, Debian
bionic
Released (1.9+srconly-2ubuntu0.1)
focal
Released (1.9+srconly-3ubuntu0.1)
xenial
Released (1.7-3ubuntu0.1~esm1)
Available with Ubuntu Pro
trusty Ignored
(end of standard support)
upstream Needs triage

hirsute Ignored
(end of life)
impish Ignored
(end of life)

Severity score breakdown

Parameter Value
Base score 7.8
Attack vector Local
Attack complexity Low
Privileges required None
User interaction Required
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H