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Vulnerability of Samba: out-of-bounds memory reading via AD DC LDAP Server

Synthesis of the vulnerability 

An attacker can force a read at an invalid address via AD DC LDAP Server of Samba, in order to trigger a denial of service, or to obtain sensitive information.
Impacted systems: Debian, Fedora, openSUSE Leap, RHEL, Samba, SLES, Synology DSM, Synology DS***, Synology RS***, Ubuntu.
Severity of this alert: 2/4.
Creation date: 24/03/2021.
Références of this alert: CERTFR-2021-AVI-218, CVE-2021-20277, DLA-2611-1, DSA-4884-1, FEDORA-2021-1a8e93a285, FEDORA-2021-c93a3a5d3f, openSUSE-SU-2021:0469-1, RHSA-2021:1072-01, RHSA-2021:1213-01, RHSA-2021:1214-01, SUSE-SU-2021:0944-1, SUSE-SU-2021:0945-1, Synology-SA-21:13, USN-4888-1, USN-4888-2, VIGILANCE-VUL-34931.

Description of the vulnerability 

An attacker can force a read at an invalid address via AD DC LDAP Server of Samb...
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This cybersecurity announce impacts software or systems such as Debian, Fedora, openSUSE Leap, RHEL, Samba, SLES, Synology DSM, Synology DS***, Synology RS***, Ubuntu.

Our Vigil@nce team determined that the severity of this threat alert 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 computer weakness alert.

Solutions for this threat 

Fixes for this vulnerability are not yet public.
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