Vigil@nce - libarchive: out-of-bounds memory reading via archive_read_format_rar_read_header
December 2018 by Vigil@nce
This bulletin was written by Vigil@nce : https://vigilance.fr/offer
SYNTHESIS OF THE VULNERABILITY
Impacted products: Debian, Fedora, openSUSE Leap, SUSE Linux
Enterprise Desktop, SLES.
Severity: 2/4.
Consequences: data reading, denial of service on service, denial
of service on client.
Provenance: document.
Confidence: confirmed by the editor (5/5).
Creation date: 31/10/2018.
DESCRIPTION OF THE VULNERABILITY
An attacker can force a read at an invalid address via
archive_read_format_rar_read_header() of libarchive, in order to
trigger a denial of service, or to obtain sensitive information.
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