CVE-2016-2125 Auth bypass in samba
Samba requests forwardable Kerberos tickets, allowing authenticated services to impersonate Samba to other services or users.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2016-2125?
CVE-2016-2125 is a medium-severity authentication bypass vulnerability in Redhat Enterprise Linux Desktop, published on 31 Oct 2018. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
It was found that Samba before versions 4.5.3, 4.4.8, 4.3.13 always requested forwardable tickets when using Kerberos authentication. A service to which Samba authenticated using Kerberos could subsequently use the ticket to impersonate Samba to other services or domain users.
Which versions are affected by CVE-2016-2125?
It affects 8 products.
Products include Redhat Enterprise Linux Desktop, Redhat Enterprise Linux Server, Redhat Enterprise Linux Server Aus, Redhat Enterprise Linux Server Eus, Redhat Enterprise Linux Server Tus, Redhat Enterprise Linux Workstation and 2 more.
How do I fix CVE-2016-2125?
Upgrade to a fixed version.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2016-2125 being exploited?
There is no known exploitation of CVE-2016-2125 in the wild and no public exploit code.
Other vulnerabilities in Redhat Enterprise Linux Desktop
Sources
Also known as ALPINE-CVE-2016-2125, AZL-44208, DEBIAN-CVE-2016-2125, DLA-776-1, ECHO-e6b5-3b2a-9c32, GHSA-qc7g-mqp8-fhmm and 2 more.