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Published: 28 December 2021

An issue was discovered in gif2apng 1.9. There is a heap-based buffer overflow within the main function. It allows an attacker to write data outside of the allocated buffer. The attacker has control over a part of the address that data is written to, control over the written data, and (to some extent) control over the amount of data that is written.



Cvss 3 Severity Score


Score breakdown


Package Release Status
Launchpad, Ubuntu, Debian
Released (1.9+srconly-2ubuntu0.1)
Released (1.9+srconly-3ubuntu0.1)
hirsute Ignored
(end of life)
impish Ignored
(end of life)
trusty Ignored
(end of standard support)
upstream Needs triage

Released (1.7-3ubuntu0.1~esm1)
Available with Ubuntu Pro

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