CVE-2020-25722 Missing authorization in samba

What is CVE-2020-25722?

CVE-2020-25722 is a high-severity missing authorization vulnerability in Canonical Ubuntu Linux, published on 18 Feb 2022. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

Multiple flaws were found in the way samba AD DC implemented access and conformance checking of stored data. An attacker could use this flaw to cause total domain compromise.

Weakness: CWE-863

Which versions are affected by CVE-2020-25722?

It affects 4 products.

Products include Canonical Ubuntu Linux, Debian Debian Linux, Fedoraproject Fedora, Samba Samba.

How do I fix CVE-2020-25722?

Apply the vendor's patch.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2020-25722 being exploited?

There is no known exploitation of CVE-2020-25722 in the wild and no public exploit code.

Other vulnerabilities in Canonical Ubuntu Linux

• CVE-2020-11651 SaltStack Salt Authentication Bypass Exploited Critical 9.8
• CVE-2020-7247 OpenSMTPD Remote Code Execution Exploited Critical 9.8
• CVE-2019-16928 Exim Out-of-bounds Write Exploited Critical 9.8
• CVE-2018-6789 Exim Buffer Overflow Exploited Critical 9.8
• CVE-2015-2590 Oracle Java SE and Java SE Embedded Remote Code Execution Exploited Critical 9.8

All Canonical Ubuntu Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as ALPINE-CVE-2020-25722, AZL-36996, AZL-8651, DEBIAN-CVE-2020-25722, ECHO-1d75-7a80-f32f, GHSA-5hcc-fcfj-mj9h and 1 more.