Vigil@nce - HAProxy: out-of-bounds memory reading via dns_validate_dns_response
March 2019 by Vigil@nce
This bulletin was written by Vigil@nce : https://vigilance.fr/offer/Computer...
SYNTHESIS OF THE VULNERABILITY
Impacted products: Fedora, openSUSE Leap, SLES, Ubuntu.
Consequences: data reading, denial of service on service, denial of service on client.
Provenance: intranet client.
Confidence: confirmed by the editor (5/5).
Creation date: 11/01/2019.
DESCRIPTION OF THE VULNERABILITY
An attacker can force a read at an invalid address via dns_validate_dns_response() of HAProxy, in order to trigger a denial of service, or to obtain sensitive information.
ACCESS TO THE FULL VIGIL@NCE BULLETIN