Double Free in gifsicle - CVE-2017-18120
Published: February 2, 2018 / Updated: August 8, 2020
Vulnerability identifier: #VU37569
CSH Severity: High
CVSS v4: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2017-18120
CWE-ID: CWE-415
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.
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.
Affected software
gifsicle
Fedora
gifsicle
Fedora
gifsicle
How to mitigate CVE-2017-18120
Install update from vendor's website.
gifsicle - addressed in versions 1.91-1.el6, 1.91-1.el7, 1.91-1.fc27, 1.91-1.fc28