Vulnerability identifier: #VU58091

Vulnerability risk: Medium

CVSSv3.1: 4.2 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-23192

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

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

Vendor: Samba

Description

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to the DCE/RPC fragment injection issue. A remote attacker can replace subsequent fragments in requests with their own data and alter the server behavior.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Samba: 4.10.0 - 4.10.18, 4.11.0 - 4.11.17, 4.12.0 - 4.12.15, 4.13.0 - 4.13.13, 4.14.0 - 4.14.9, 4.15.0 - 4.15.1

---

External links
http://www.samba.org/samba/security/CVE-2021-23192.html

---

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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