Vigil@nce - GnuTLS: NULL pointer dereference via Second Handshake No_renegotiation
November 2020 by Vigil@nce
This bulletin was written by Vigil@nce : https://vigilance.fr/?langue=2
SYNTHESIS OF THE VULNERABILITY
Impacted products: Fedora, openSUSE Leap, Slackware, SLES, Ubuntu, Unix (platform) not comprehensive.
Consequences: denial of service on client.
Provenance: internet server.
Confidence: confirmed by the editor (5/5).
Creation date: 07/09/2020.
DESCRIPTION OF THE VULNERABILITY
An attacker can force a NULL pointer to be dereferenced via Second Handshake No_renegotiation of GnuTLS, in order to trigger a denial of service.
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