Improperly implemented security feature in Samba - CVE-2019-14870
Published: December 10, 2019
Vulnerability identifier: #VU23470
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:A/AC:L/AT:P/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2019-14870
CWE-ID: CWE-358
Exploitation vector: Adjecent network
Exploit availability:
No public exploit available
Vendor: Samba
Affected software:
Samba
Samba
Detailed vulnerability description
The vulnerability allows a remote attacker to bypass certain security restrictions.
The vulnerability exists due to incorrect implementation of the DelegationNotAllowed Kerberos feature restriction ("delegation_not_allowed" user attribute) that is not applied when processing protocol transmission requests (S4U2Self) in the AD DC KDC. A remote authenticated user can gain access to sensitive information and functionality within the AD domain.
How to mitigate CVE-2019-14870
Install updates from vendor's website.