What’s Vulnerable › Vulnerabilities

CVE-2018-10918

• Severity: medium (CVSS 6.5 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2018-08-22 · updated 2026-06-17
• Weakness: CWE-476

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.

Affected products

• Canonical Ubuntu Linux: 14.04, 16.04, 18.04
• Samba: from 4.7.0 before 4.7.9; from 4.8.0 before 4.8.4 — fixed in 4.7.9, 4.8.4

How to fix

Upgrade to a fixed version: Samba 4.7.9, 4.8.4. Check the vendor advisory for mitigations.

References

• http://www.securityfocus.com/bid/105083
• https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10918
• https://security.gentoo.org/glsa/202003-52
• https://security.netapp.com/advisory/ntap-20180814-0001/
• https://usn.ubuntu.com/3738-1/
• https://www.samba.org/samba/security/CVE-2018-10918.html
• http://www.securityfocus.com/bid/105083
• https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10918
• https://security.gentoo.org/glsa/202003-52
• https://security.netapp.com/advisory/ntap-20180814-0001/
• https://usn.ubuntu.com/3738-1/
• https://www.samba.org/samba/security/CVE-2018-10918.html

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