Vigil@nce - mgetty: out-of-bounds memory reading via putwhitespan
June 2020 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: openSUSE Leap.
Severity: 2/4.
Consequences: data reading, denial of service on service, denial
of service on client.
Provenance: user shell.
Confidence: confirmed by the editor (5/5).
Creation date: 13/04/2020.
DESCRIPTION OF THE VULNERABILITY
An attacker can force a read at an invalid address via
putwhitespan() of mgetty, in order to trigger a denial of service,
or to obtain sensitive information.
ACCESS TO THE FULL VIGIL@NCE BULLETIN
https://vigilance.fr/vulnerability/mgetty-out-of-bounds-memory-reading-via-putwhitespan-32001