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Vigil@nce - Vixie Cron: use after free via force_rescan_user

May 2019 by Vigil@nce

SYNTHESIS OF THE VULNERABILITY

Impacted products: Debian.

Severity: 2/4.

Consequences: administrator access/rights, denial of service on service.

Provenance: user shell.

Confidence: confirmed by the editor (5/5).

Creation date: 22/03/2019.

DESCRIPTION OF THE VULNERABILITY

An attacker can force the usage of a freed memory area via force_rescan_user() of Vixie Cron, in order to trigger a denial of service, and possibly to run code.

ACCESS TO THE FULL VIGIL@NCE BULLETIN

https://vigilance.fr/vulnerability/...




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