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Vigil@nce - slirp4netns: use after free via ip_reass
July 2020 by Vigil@nce
This bulletin was written by Vigil@nce : https://vigilance.fr/computer-vulne...
SYNTHESIS OF THE VULNERABILITY
Impacted products: Debian, openSUSE Leap, SLES, Ubuntu.
Severity: 2/4.
Consequences: administrator access/rights, privileged access/rights, denial of service on server, denial of service on service.
Provenance: document.
Confidence: confirmed by the editor (5/5).
Creation date: 07/05/2020.
DESCRIPTION OF THE VULNERABILITY
An attacker can force the usage of a freed memory area via ip_reass() of slirp4netns, in order to trigger a denial of service, and possibly to run code.
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