CVE-2017-18120

Published: 2 February 2018

A double-free bug in the read_gif function in gifread.c in gifsicle 1.90 allows a remote attacker to cause a denial-of-service attack or unspecified other impact via a maliciously crafted file, because last_name is mishandled, a different vulnerability than CVE-2017-1000421.

From the Ubuntu Security Team

It was discovered that Gifsicle did not properly handle certain input. If a user were tricked into opening a malicious GIF, an attacker could potentially execute arbitrary code.

Priority

Cvss 3 Severity Score

7.8

Score breakdown

Status

Package	Release	Status
gifsicle Launchpad, Ubuntu, Debian	artful	Ignored (end of life)
	bionic	Not vulnerable (1.91-2)
	cosmic	Not vulnerable (1.91-2)
	disco	Not vulnerable (1.91-2)
	eoan	Not vulnerable (1.91-2)
	focal	Not vulnerable (1.91-2)
	groovy	Not vulnerable (1.91-2)
	hirsute	Not vulnerable (1.91-2)
	impish	Not vulnerable (1.91-2)
	jammy	Not vulnerable (1.91-2)
	trusty	Released (1.78-1ubuntu0.1~esm1) Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
	upstream	Released (1.91-1)
	xenial	Released (1.88-1ubuntu0.1~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:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

References

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