CVE-2018-10918 Null dereference in samba

What is CVE-2018-10918?

CVE-2018-10918 is a medium-severity vulnerability in Canonical Ubuntu Linux, published on 22 Aug 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

A null pointer dereference flaw was found in the way samba checked database outputs from the LDB database layer. An authenticated attacker could use this flaw to crash a samba server in an Active Directory Domain Controller configuration. Samba versions before 4.7.9 and 4.8.4 are vulnerable.

Weakness: CWE-476

Which versions are affected by CVE-2018-10918?

It affects 2 products.

Products include Canonical Ubuntu Linux, Samba Samba.

How do I fix CVE-2018-10918?

Upgrade to a fixed version.

Is CVE-2018-10918 being exploited?

There is no known exploitation of CVE-2018-10918 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-2018-10918, DEBIAN-CVE-2018-10918, ECHO-86f7-6f5c-037e, GHSA-3gcv-q5vm-qrxr, UBUNTU-CVE-2018-10918.