Vigil@nce - LibTomCrypt: out-of-bounds memory reading via der_decode_utf8_string
December 2019 by Vigil@nce
This bulletin was written by Vigil@nce : https://vigilance.fr/?langue=2
SYNTHESIS OF THE VULNERABILITY
Impacted products: Debian, 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: 10/10/2019.
DESCRIPTION OF THE VULNERABILITY
An attacker can force a read at an invalid address via
der_decode_utf8_string() of LibTomCrypt, in order to trigger a
denial of service, or to obtain sensitive information.
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