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.

References

https://www.samba.org/samba/security/CVE-2018-16841.html

https://www.debian.org/security/2018/dsa-4345

https://usn.ubuntu.com/3827-2/

https://usn.ubuntu.com/3827-1/

https://security.netapp.com/advisory/ntap-20181127-0001/

https://security.gentoo.org/glsa/202003-52

https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16841

http://www.securityfocus.com/bid/106023

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3