CVE Vulnerabilities

CVE-2017-1000421

Use After Free

Published: Jan 02, 2018 | Modified: Nov 21, 2024
CVSS 3.x
9.8
CRITICAL
Source:
NVD
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.x
7.5 HIGH
AV:N/AC:L/Au:N/C:P/I:P/A:P
RedHat/V2
RedHat/V3
Ubuntu
MEDIUM

Gifsicle gifview 1.89 and older is vulnerable to a use-after-free in the read_gif function resulting potential code execution

Weakness

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory “belongs” to the code that operates on the new pointer.

Affected Software

Name Vendor Start Version End Version
Gifsicle Lcdf * 1.89 (including)
Gifsicle Ubuntu esm-apps/xenial *
Gifsicle Ubuntu esm-infra-legacy/trusty *
Gifsicle Ubuntu trusty *
Gifsicle Ubuntu trusty/esm *
Gifsicle Ubuntu upstream *
Gifsicle Ubuntu xenial *
Gifsicle Ubuntu zesty *

Potential Mitigations

References