CVE-2018-16841
Severity CVSS v4.0:
Pending analysis
Type:
CWE-415
Double Free
Publication date:
28/11/2018
Last modified:
29/08/2022
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.
Impact
Base Score 3.x
6.50
Severity 3.x
MEDIUM
Base Score 2.0
4.00
Severity 2.0
MEDIUM
Vulnerable products and versions
CPE | From | Up to |
---|---|---|
cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:* | 4.3.0 (including) | 4.7.12 (excluding) |
cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:* | 4.8.0 (including) | 4.8.7 (excluding) |
cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:* | 4.9.0 (including) | 4.9.3 (excluding) |
cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:* | ||
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* | ||
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* | ||
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* | ||
cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:* | ||
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* |
To consult the complete list of CPE names with products and versions, see this page
References to Advisories, Solutions, and Tools
- http://www.securityfocus.com/bid/106023
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16841
- https://security.gentoo.org/glsa/202003-52
- https://security.netapp.com/advisory/ntap-20181127-0001/
- https://usn.ubuntu.com/3827-1/
- https://usn.ubuntu.com/3827-2/
- https://www.debian.org/security/2018/dsa-4345
- https://www.samba.org/samba/security/CVE-2018-16841.html