Vigil@nce - Ruby: buffer overflow via Psych-Emitter
May 2020 by Vigil@nce
This bulletin was written by Vigil@nce : https://vigilance.fr/offer/Computer...
SYNTHESIS OF THE VULNERABILITY
Impacted products: Debian.
Consequences: user access/rights, denial of service on service, denial of service on client.
Confidence: confirmed by the editor (5/5).
Creation date: 25/03/2020.
DESCRIPTION OF THE VULNERABILITY
An attacker can trigger a buffer overflow via Psych::Emitter of Ruby, in order to trigger a denial of service, and possibly to run code.
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