Vigil@nce - libmaxminddb: out-of-bounds memory reading via dump_entry_data_list
January 2021 by Vigil@nce
This bulletin was written by Vigil@nce : https://vigilance.fr/computer-vulnerability
SYNTHESIS OF THE VULNERABILITY
Impacted products: Debian, Fedora, Ubuntu.
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: 10/11/2020.
DESCRIPTION OF THE VULNERABILITY
An attacker can force a read at an invalid address via
dump_entry_data_list() of libmaxminddb, in order to trigger a
denial of service, or to obtain sensitive information.
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