CVE ID:	CVE-2018-16841
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.
Test IDs:	1.3.6.1.4.1.25623.1.0.141734   1.3.6.1.4.1.25623.1.1.2.2019.1780   1.3.6.1.4.1.25623.1.0.704345
Cross References:	Common Vulnerability Exposure (CVE) ID: CVE-2018-16841 BugTraq ID: 106023 http://www.securityfocus.com/bid/106023 Debian Security Information: DSA-4345 (Google Search) https://www.debian.org/security/2018/dsa-4345 https://security.gentoo.org/glsa/202003-52 https://usn.ubuntu.com/3827-1/ https://usn.ubuntu.com/3827-2/