External risk intelligence

Windows Group Policy Password Disclosure Risk

CVE advisoryKnown Exploit

CVE-2014-1812

A flaw in Windows Group Policy allows authenticated users to obtain sensitive credentials from the SYSVOL share, potentially leading to privilege escalation. This poses a business risk by enabling unauthorized access and system compromise. Organizations should address this vulnerability to protect sensitive data and ma

1Halo Surface Signal

Microsoft Windows 7

r2

External exposure likelihood

Halo Surface Signal score for CVE-2014-1812

This vulnerability involves the Group Policy SYSVOL share within an internal Active Directory environment. Access to the SYSVOL share is typically restricted to authenticated domain users within the internal corporate network and is not intended to be exposed to the public internet.

Horizon Alert

Summary of the vulnerability and why it matters

A flaw within Microsoft Windows' Group Policy implementation relates to how passwords are distributed. This weakness can allow authenticated users to access sensitive credential information. Such access could lead to unauthorized privilege escalation within an organization's systems.

  • Vulnerable Microsoft Windows systems
  • Improper password distribution
  • Sensitive credential exposure, privilege escalation

Attack Path

How an attacker could exploit the issue

This vulnerability allows authenticated users to obtain sensitive credential information, leading to privilege escalation. An attacker can leverage access to the SYSVOL share to gain higher privileges within the network. The issue stems from how Microsoft Windows Group Policy handles password distribution.

  • Exposure: SYSVOL share access required.
  • Attacker: Authenticated user.
  • Trigger: Exploiting password distribution.
  • Impact: Gain privileges.

Live Threat

Current exploitation, exposure, and threat context

This vulnerability impacts Microsoft Windows systems that use Group Policy to distribute passwords. Attackers can leverage access to the SYSVOL share to obtain sensitive credential information, potentially leading to elevated privileges and significant business risk. The compromise of credentials could allow unauthorized access to systems and data, disrupting operations and impacting confidentiality. Organizations should treat this vulnerability with urgency due to its potential for widespread impact.

  • Attacker skill level: Medium
  • Required access: Authenticated user, SYSVOL share access
  • Business risk: High, urgent remediation recommended

Priority actions

Operational Fix

Recommended remediation, mitigation, and detection steps

This vulnerability impacts Microsoft Windows systems by allowing authenticated users to obtain sensitive credential information and gain privileges. Attackers could exploit this by leveraging access to the SYSVOL share. The potential for privilege escalation and access to sensitive data presents a significant business risk to affected organizations.

  • Find exposed internal assets.
  • Reduce SYSVOL share exposure.
  • Apply vendor fixes and validate.
  • Monitor for related activity.

Frequently asked questions

What systems are affected by the Windows Group Policy Preferences Password Elevation Vulnerability (CVE-2014-1812)?

This vulnerability impacts Microsoft Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8, Windows 8.1, and Windows Server 2012 Gold and R2. The core issue lies in how the Group Policy implementation handles password distribution.

What weakness classes are associated with CVE-2014-1812 and how does it work?

CVE-2014-1812 is associated with CWE-255 and CWE-522, indicating improper protection of sensitive information and credentials. The vulnerability arises because the Group Policy implementation does not adequately secure password distribution, allowing authenticated users to access sensitive credential information.

How can an attacker exploit CVE-2014-1812 and what is the scope of impact?

An authenticated user with access to the SYSVOL share can exploit this vulnerability to obtain sensitive credential information, which can then be used for privilege escalation. The scope is limited to authenticated users within the network who can access the SYSVOL share, but the impact can be significant within that scope.

What is the relevance of CVE-2014-1812, considering Halo Surface Signal?

Halo Surface Signal indicates that this vulnerability is 'Very unlikely' to be exposed externally because it involves the Group Policy SYSVOL share, which is typically restricted to authenticated users within an internal Active Directory environment and not exposed to the public internet.

What practical steps should an organization take in response to this vulnerability?

Organizations should identify any exposed internal assets, reduce the exposure of the SYSVOL share, apply vendor-provided fixes, and validate their implementation. Monitoring for related activity is also crucial to detect any potential exploitation.

References