Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| [UNKNOWN] / samba | affected 4.7.12; affected 4.8.7; affected 4.9.3 |
CWE
CWE-416
References
- http://www.securityfocus.com/bid/106023
- https://usn.ubuntu.com/3827-2/
- https://usn.ubuntu.com/3827-1/
- https://security.netapp.com/advisory/ntap-20181127-0001/
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16841
- https://www.debian.org/security/2018/dsa-4345
- https://www.samba.org/samba/security/CVE-2018-16841.html
- https://security.gentoo.org/glsa/202003-52
ADP enrichment
No English description supplied.
- http://www.securityfocus.com/bid/106023
- https://usn.ubuntu.com/3827-2/
- https://usn.ubuntu.com/3827-1/
- https://security.netapp.com/advisory/ntap-20181127-0001/
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16841
- https://www.debian.org/security/2018/dsa-4345
- https://www.samba.org/samba/security/CVE-2018-16841.html
- https://security.gentoo.org/glsa/202003-52