SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityAnalyzed

CVE-2014-6324

Microsoft Kerberos Key Distribution Center (KDC) Privilege Escalation Vulnerability

KEVHIGH 8.8EPSS 87.4%

Does this matter?

Known to be exploited in the wild (CISA KEV, CISA remediation deadline 15 April 2022). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.

Description

The Kerberos Key Distribution Center (KDC) in Microsoft Windows Server 2003 SP2, 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 allows remote authenticated domain users to obtain domain administrator privileges via a forged signature in a ticket, as exploited in the wild in November 2014, aka "Kerberos Checksum Vulnerability."

CVSS 3.1
8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS
87.45% probability · 100th percentile
CISA KEV
Listed 25 March 2022 · due 15 April 2022
Affected
microsoft/windows 7 · microsoft/windows 8 · microsoft/windows 8.1 · microsoft/windows server 2003 · microsoft/windows server 2008 · microsoft/windows server 2012
Source
secure@microsoft.com

CISA notes

Apply updates per vendor instructions. https://nvd.nist.gov/vuln/detail/CVE-2014-6324

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.