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Vulnerability of SPICE: denial of service via Client-initiated Renegotiation

Synthesis of the vulnerability 

An attacker can trigger a fatal error via Client-initiated Renegotiation of SPICE, in order to trigger a denial of service.
Impacted systems: RHEL, SUSE Linux Enterprise Desktop, SLES.
Severity of this alert: 2/4.
Creation date: 19/05/2021.
Références of this alert: CVE-2021-20201, RHSA-2021:1924-01, SUSE-SU-2021:14744-1, SUSE-SU-2021:1901-1, SUSE-SU-2021:1902-1, SUSE-SU-2021:1906-1, SUSE-SU-2021:1927-1, SUSE-SU-2021:1956-1, VIGILANCE-VUL-35477.

Description of the vulnerability 

An attacker can trigger a fatal error via Client-initiated Renegotiation of SPIC...
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This cybersecurity alert impacts software or systems such as RHEL, SUSE Linux Enterprise Desktop, SLES.

Our Vigil@nce team determined that the severity of this weakness is medium.

The trust level is of type confirmed by the editor, with an origin of intranet client.

An attacker with a expert ability can exploit this security weakness.

Solutions for this threat 

This vulnerability workaround will be public soon.
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