VDB
CVE-2018-16841
CVE-2018-16841
PUBLISHED
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.
EPSS 9.45% · 93.0th percentile
Risk Scores
EPSS Score
9.45%
93.0th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Ubuntu:14.04:LTS | samba | 2:4.1.6+dfsg-1ubuntu2.14.04.4, 2:3.6.18-1ubuntu3, 2:4.0.10+dfsg-4ubuntu2 |
| Ubuntu:18.04:LTS | samba | 2:4.7.6+dfsg~ubuntu-0ubuntu2, 2:4.7.6+dfsg~ubuntu-0ubuntu2.2, 2:4.7.6+dfsg~ubuntu-0ubuntu2.4 |
| Ubuntu:16.04:LTS | samba | 2:4.3.11+dfsg-0ubuntu0.16.04.17, *, 0 |
Timeline
- Nov 27, 2018 CVE Published
- Apr 14, 2021 EPSS Score
- Jun 23, 2021 EPSS Score
- Oct 26, 2021 EPSS Score
- Dec 27, 2021 EPSS Score
- Feb 28, 2022 EPSS Score
- May 2, 2022 EPSS Score
- Sep 5, 2022 EPSS Score
- Nov 6, 2022 EPSS Score
- Mar 11, 2023 EPSS Score
- May 13, 2023 EPSS Score
- Jul 15, 2023 EPSS Score
References
- https://ubuntu.com/security/CVE-2018-16841 third-party-advisory
- https://www.samba.org/samba/security/CVE-2018-16841.html third-party-advisory
- https://ubuntu.com/security/notices/USN-3827-1 vendor-advisory
- https://ubuntu.com/security/notices/USN-3827-2 vendor-advisory
- https://www.cve.org/CVERecord?id=CVE-2018-16841 third-party-advisory