Vigil@nce - libEBML: use after free via EbmlMaster-Read
April 2021 by Vigil@nce
This bulletin was written by Vigil@nce : https://vigilance.fr/computer-vulnerability
SYNTHESIS OF THE VULNERABILITY
Impacted products: Fedora.
Severity: 2/4.
Consequences: administrator access/rights, privileged
access/rights, user access/rights, denial of service on server,
denial of service on service, denial of service on client.
Provenance: document.
Confidence: confirmed by the editor (5/5).
Creation date: 01/02/2021.
DESCRIPTION OF THE VULNERABILITY
An attacker can force the usage of a freed memory area via
EbmlMaster::Read() of libEBML, in order to trigger a denial of
service, and possibly to run code.
ACCESS TO THE FULL VIGIL@NCE BULLETIN
https://vigilance.fr/vulnerability/libEBML-use-after-free-via-EbmlMaster-Read-34444