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Vulnerability of GnuTLS: use after free via key_share

Synthesis of the vulnerability 

An attacker can force the usage of a freed memory area via key_share of GnuTLS, in order to trigger a denial of service, and possibly to run code.
Vulnerable systems: openSUSE Leap, SLES.
Severity of this threat: 3/4.
Creation date: 24/03/2021.
Références of this weakness: CVE-2021-20231, openSUSE-SU-2021:0470-1, SUSE-SU-2021:0934-1, SUSE-SU-2021:0935-1, VIGILANCE-VUL-34934.

Description of the vulnerability 

An attacker can force the usage of a freed memory area via key_share of GnuTLS, ...
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This threat alert impacts software or systems such as openSUSE Leap, SLES.

Our Vigil@nce team determined that the severity of this computer vulnerability bulletin is important.

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

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

Solutions for this threat 

This vulnerability solution will be public soon.
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