Vigil@nce - OpenSC: out-of-bounds memory reading via decode_bit_string
November 2019 by Vigil@nce
This bulletin was written by Vigil@nce : https://vigilance.fr/?langue=2
SYNTHESIS OF THE VULNERABILITY
Impacted products: Debian.
Consequences: data reading, denial of service on service, denial of service on client.
Confidence: confirmed by the editor (5/5).
Creation date: 12/09/2019.
DESCRIPTION OF THE VULNERABILITY
An attacker can force a read at an invalid address via decode_bit_string() of OpenSC, in order to trigger a denial of service, or to obtain sensitive information.
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