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Vigil@nce - Hunspell: out-of-bounds memory reading via SuggestMgr-leftcommonsubstring

January 2020 by Vigil@nce

This bulletin was written by Vigil@nce : https://vigilance.fr/?langue=2

SYNTHESIS OF THE VULNERABILITY

Impacted products: Fedora.

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: 22/11/2019.

DESCRIPTION OF THE VULNERABILITY

An attacker can force a read at an invalid address via
SuggestMgr::leftcommonsubstring() of Hunspell, in order to trigger
a denial of service, or to obtain sensitive information.

ACCESS TO THE FULL VIGIL@NCE BULLETIN

https://vigilance.fr/vulnerability/Hunspell-out-of-bounds-memory-reading-via-SuggestMgr-leftcommonsubstring-30938


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