CVE-2018-16841

 

Published at: - 28-11-2018 03:29

Last modified: - 29-08-2022 10:04

Total changes: - 2

Description

Samba from version 4.3.0 and before versions 4.7.12, 4.8.7 and 4.9.3 are vulnerable to a denial of service. When configured to accept smart-card authentication, Samba's KDC will call talloc_free() twice on the same memory if the principal in a validly signed certificate does not match the principal in the AS-REQ. This is only possible after authentication with a trusted certificate. talloc is robust against further corruption from a double-free with talloc_free() and directly calls abort(), terminating the KDC process.

Common Vulnerability Scoring System (CVSS)

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

 

Verification logic

 

Reference

• https://www.samba.org/samba/security/CVE-2018-16841.html
• https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16841
• DSA-4345-Third Party Advisory
• USN-3827-2-Third Party Advisory
• USN-3827-1-Third Party Advisory
• https://security.netapp.com/advisory/ntap-20181127-0001/
• 106023-VDB Entry, Third Party Advisory
• GLSA-202003-52-Third Party Advisory

 

Keywords

NVD

 

CVE-2018-16841

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures