Vigil@nce - ksh: code execution via Environment Variables Arithmetic Expressions
April 2020 by Vigil@nce
This bulletin was written by Vigil@nce : https://vigilance.fr/offer/Computer...
SYNTHESIS OF THE VULNERABILITY
Impacted products: Fedora, RHEL.
Consequences: user access/rights.
Provenance: user shell.
Confidence: confirmed by the editor (5/5).
Creation date: 05/02/2020.
DESCRIPTION OF THE VULNERABILITY
An attacker can use a vulnerability via Environment Variables Arithmetic Expressions of ksh, in order to run code.
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