#VU70431 Division by zero in pngcheck
Published: December 19, 2022
Vulnerability identifier: #VU70431
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: N/A
CWE-ID: CWE-369
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
pngcheck
pngcheck
Software vendor:
libpng
libpng
Description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a division by zero issue when zlib-decoding interlaced PNGs with extra data beyond what is required for the declared image dimensions. A remote attacker can pass a specially crafted PNG file to the application and perform a denial of service (DoS) attack.
Remediation
Install updates from vendor's website.