Infinite loop in Samba - CVE-2018-14629
Published: November 27, 2018 / Updated: November 28, 2018
Vulnerability identifier: #VU16154
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2018-14629
CWE-ID: CWE-835
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Samba
Affected software:
Samba
Samba
Detailed vulnerability description
The vulnerability allows a local unauthenticated attacker to cause DoS condition.
The vulnerability exists due to infinite query recursion caused by CNAME loops. A local attacker can add any dns record via ldap using the ldbadd tool, trigger infinite loop and cause the server to crash.
How to mitigate CVE-2018-14629
The vulnerability has been fixed in the version 4.7.12, 4.8.7, and 4.9.3.