Vigil@nce - pngcheck: buffer overflow via check_chunk_name
January 2021 by Vigil@nce
This bulletin was written by Vigil@nce : https://vigilance.fr/offer/Computer-vulnerabilities-watch-and-alert
SYNTHESIS OF THE VULNERABILITY
Impacted products: Fedora, openSUSE Leap, SLES.
Severity: 2/4.
Consequences: user access/rights, denial of service on service,
denial of service on client.
Provenance: document.
Confidence: confirmed by the editor (5/5).
Creation date: 23/11/2020.
DESCRIPTION OF THE VULNERABILITY
An attacker can trigger a buffer overflow via check_chunk_name()
of pngcheck, in order to trigger a denial of service, and possibly
to run code.
ACCESS TO THE FULL VIGIL@NCE BULLETIN
https://vigilance.fr/vulnerability/pngcheck-buffer-overflow-via-check-chunk-name-33954