CVE-2021-23192 Security feature bypass in samba
An attacker can bypass DCE/RPC signature requirements in Samba by manipulating fragmented requests, potentially compromising communication integrity.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2021-23192?
CVE-2021-23192 is a high-severity vulnerability in Samba Samba, published on 2 Mar 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A flaw was found in the way samba implemented DCE/RPC. If a client to a Samba server sent a very large DCE/RPC request, and chose to fragment it, an attacker could replace later fragments with their own data, bypassing the signature requirements.
Weakness: CWE-20
Which versions are affected by CVE-2021-23192?
It affects 1 product.
Products include Samba Samba.
How do I fix CVE-2021-23192?
Apply the vendor's patch.
Is CVE-2021-23192 being exploited?
There is no known exploitation of CVE-2021-23192 in the wild and no public exploit code.
Other vulnerabilities in Samba Samba
Sources
Also known as ALPINE-CVE-2021-23192, AZL-37002, AZL-8903, DEBIAN-CVE-2021-23192, ECHO-86fa-32f7-5ab6, GHSA-vffc-r23p-p6rq and 1 more.