Vigil@nce - Linux kernel: privilege escalation via signal
May 2020 by Vigil@nce
This bulletin was written by Vigil@nce : https://vigilance.fr/?langue=2
SYNTHESIS OF THE VULNERABILITY
Impacted products: Linux.
Consequences: administrator access/rights, privileged access/rights.
Provenance: user shell.
Confidence: confirmed by the editor (5/5).
Creation date: 13/05/2020.
DESCRIPTION OF THE VULNERABILITY
An attacker can bypass restrictions on the kill system call of the Linux kernel, in order to escalate his privileges.
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