Zero-day vulnerability in Windows

Privilege escalation
CVE-2014-6324

Exploited by Duqu.

The vulnerability was reported by Qualcomm Information Security & Risk Management team.

Vulnerability details

Advisory: SB2014111801 - Privilege escalation in Microsoft Windows

Vulnerable component: Windows

CVE-ID: CVE-2014-6324

CVSSv3 score: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:H/RL:O/RC:C

CWE-ID: CWE-310 - Cryptographic Issues

Description:

The vulnerability allows a remote authenticated attacker to obtain elevated privileges on the target system.

The weakness exists due to the failure to properly validate signatures in the Kerberos ticket by the Microsoft Kerberos KDC implementation. A remote attacker can forge a ticket and elevate an unprivileged domain user account to a domain administrator account.

Successful exploitation of the vulnerability results in arbitrary code execution on the vulnerable system.

Note: the vulnerability was being actively exploited.

Public Exploits:

- Microsoft Windows Kerberos - Elevation of Privilege (MS14-068) [Exploit-DB]

External links:

https://technet.microsoft.com/library/security/MS14-068
https://blogs.technet.microsoft.com/srd/2014/11/18/additional-information-about-cve-2014-6324/
http://securityaffairs.co/wordpress/30320/security/microsoft-patch-kerberos-bug.html
https://www.symantec.com/security_response/vulnerability.jsp?bid=70958
https://www.netiq.com/communities/cool-solutions/detecting-windows-kerberos-implementation-elevation...


About zero-day vulnerabilities

Zero-day vulnerability is an undisclosed vulnerability in software that hackers can exploit to compromise computer programs, gain unauthorized access to sensitive data, penetrate networks, etc. We consider vulnerability a zero-day when there is no solution provided from software vendor and the vulnerability is being actively exploited by malicious actors.

Zero-day candidate is a potential zero-day vulnerability in software which might have been used in targeted attacks, however there is no evidence to support this suggestion.