Vulnerability identifier: #VU78991

Vulnerability risk: Low

CVSSv3.1: 5.9 [CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-20316

CWE-ID: CWE-362

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Samba
Server applications / Directory software, identity management

Vendor:

Description

The vulnerability allows a remote user to escalate privileges on the system.

The vulnerability exists due to a race condition. A remote user can exploit the race and gain unauthorized access to sensitive information and escalate privileges on the system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

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External links
http://www.samba.org/samba/security/CVE-2021-20316.html
http://bugzilla.redhat.com/show_bug.cgi?id=2009673
http://access.redhat.com/security/cve/CVE-2021-20316
http://security-tracker.debian.org/tracker/CVE-2021-20316
http://bugzilla.samba.org/show_bug.cgi?id=14842

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.