CVE-2020-25720 Samba: check attribute access rights for ldap adds of computers
A delegated administrator can retain excessive rights over newly created computer objects in Samba Active Directory, leading to potential privilege escalation.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2020-25720?
CVE-2020-25720 is a high-severity vulnerability in Red Hat Enterprise Linux 10, published on 17 Nov 2024. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A vulnerability was found in Samba where a delegated administrator with permission to create objects in Active Directory can write to all attributes of the newly created object, including security-sensitive attributes, even after the object's creation. This issue occurs because the administrator owns the object due to the lack of an Access Control List (ACL) at the time of creation and later being recognized as the 'creator owner.' The retained significant rights of the delegated administrator may not be well understood, potentially leading to unintended privilege escalation or security risks.
Weakness: CWE-266
Which versions are affected by CVE-2020-25720?
How do I fix CVE-2020-25720?
Apply the vendor's patch.
Is CVE-2020-25720 being exploited?
There is no known exploitation of CVE-2020-25720 in the wild and no public exploit code.
Sources
Also known as AZL-53220, DEBIAN-CVE-2020-25720, ECHO-1522-c16d-74fe, GHSA-r7p2-7qw3-phxg, UBUNTU-CVE-2020-25720.