Zero-day vulnerability in Windows

Privilege escalation
CVE-2014-1812

Vulnerability details

Advisory: SB2014051303 - Privilege escalation in Microsoft Windows

Vulnerable component: Windows

CVE-ID: CVE-2014-1812

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

CWE-ID: CWE-255 - Credentials Management

Description:

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

The weakness exists due to the method passwords are distributed when configured using group policy preference. A remote authenticated attacker can obtain sensitive credential information and consequently gain privileges by leveraging access to the SYSVOL share.

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

Note: the vulnerability was being actively exploited.

External links:

https://technet.microsoft.com/en-us/library/security/ms14-025
https://dirteam.com/sander/2014/05/23/security-thoughts-passwords-in-group-policy-preferences-cve-20...
https://www.tripwire.com/state-of-security/vulnerability-management/vert-alert-may-2014-microsoft-pa...
https://www.sophos.com/en-us/threat-center/threat-analyses/vulnerabilities/VET-000604.aspx

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.