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Vulnerability of GNU Screen: memory corruption via UTF-8 Character Sequence

Synthesis of the vulnerability 

An attacker can trigger a memory corruption via UTF-8 Character Sequence of GNU Screen, in order to trigger a denial of service, and possibly to run code.
Impacted products: Debian, openSUSE Leap, SUSE Linux Enterprise Desktop, SLES, Ubuntu.
Severity of this bulletin: 2/4.
Creation date: 17/02/2021.
Références of this threat: CVE-2021-26937, DLA-2570-1, DSA-4861-1, openSUSE-SU-2021:0304-1, SUSE-SU-2021:0491-1, SUSE-SU-2021:0492-1, USN-4747-1, USN-4747-2, VIGILANCE-VUL-34605.

Description of the vulnerability 

An attacker can trigger a memory corruption via UTF-8 Character Sequence of GNU ...
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This security weakness impacts software or systems such as Debian, openSUSE Leap, SUSE Linux Enterprise Desktop, SLES, Ubuntu.

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

The trust level is of type confirmed by the editor, with an origin of user shell.

An attacker with a expert ability can exploit this threat.

Solutions for this threat 

Solutions, fixes, patches and workarounds for this vulnerability are not yet public.
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