CVE-2019-14902 Missing authorization in samba

What is CVE-2019-14902?

CVE-2019-14902 is a medium-severity missing authorization vulnerability in Canonical Ubuntu Linux, published on 21 Jan 2020. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

There is an issue in all samba 4.11.x versions before 4.11.5, all samba 4.10.x versions before 4.10.12 and all samba 4.9.x versions before 4.9.18, where the removal of the right to create or modify a subtree would not automatically be taken away on all domain controllers.

Weakness: CWE-284

Which versions are affected by CVE-2019-14902?

It affects 4 products.

Products include Canonical Ubuntu Linux, Debian Debian Linux, Opensuse Leap, Samba Samba.

How do I fix CVE-2019-14902?

Upgrade to a fixed version.

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

Is CVE-2019-14902 being exploited?

There is no known exploitation of CVE-2019-14902 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-2019-14902, DEBIAN-CVE-2019-14902, ECHO-54fa-c6e5-257c, GHSA-h5p3-7352-mh38, UBUNTU-CVE-2019-14902.