Vigil@nce - libbfd: use after free via bfd_hash_lookup
March 2021 by Vigil@nce
This bulletin was written by Vigil@nce : https://vigilance.fr/computer-vulne...
SYNTHESIS OF THE VULNERABILITY
Impacted products: Fedora.
Consequences: user access/rights, denial of service on service, denial of service on client.
Confidence: confirmed by the editor (5/5).
Creation date: 28/12/2020.
DESCRIPTION OF THE VULNERABILITY
An attacker can force the usage of a freed memory area via bfd_hash_lookup() of libbfd, in order to trigger a denial of service, and possibly to run code.
ACCESS TO THE FULL VIGIL@NCE BULLETIN