CVE-2016-0099
Microsoft Windows Secondary Logon Service Privilege Escalation Vulnerability
Does this matter?
Known to be exploited in the wild (CISA KEV, CISA remediation deadline 24 March 2022). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.
Description
The Secondary Logon Service in Microsoft Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8.1, Windows Server 2012 Gold and R2, Windows RT 8.1, and Windows 10 Gold and 1511 does not properly process request handles, which allows local users to gain privileges via a crafted application, aka "Secondary Logon Elevation of Privilege Vulnerability."
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 37.16% probability · 98th percentile
- CISA KEV
- Listed 3 March 2022 · due 24 March 2022 · used in ransomware campaigns
- Weakness
- CWE-120
- Affected
- microsoft/windows 10 1507 · microsoft/windows 10 1511 · microsoft/windows 7 · microsoft/windows 8.1 · microsoft/windows server 2008 · microsoft/windows server 2012 · microsoft/windows vista
- Source
- secure@microsoft.com
CISA notes
Apply updates per vendor instructions. https://nvd.nist.gov/vuln/detail/CVE-2016-0099
References
- http://www.securityfocus.com/bid/84034Broken Link, Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1035210Broken Link, Third Party Advisory, VDB Entry
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2016/ms16-032Patch, Vendor Advisory
- https://www.exploit-db.com/exploits/39574/Exploit, Third Party Advisory, VDB Entry
- https://www.exploit-db.com/exploits/39719/Exploit, Third Party Advisory, VDB Entry
- https://www.exploit-db.com/exploits/39809/Exploit, Third Party Advisory, VDB Entry
- https://www.exploit-db.com/exploits/40107/Exploit, Third Party Advisory, VDB Entry
- http://www.securityfocus.com/bid/84034Broken Link, Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1035210Broken Link, Third Party Advisory, VDB Entry
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2016/ms16-032Patch, Vendor Advisory
- https://www.exploit-db.com/exploits/39574/Exploit, Third Party Advisory, VDB Entry
- https://www.exploit-db.com/exploits/39719/Exploit, Third Party Advisory, VDB Entry
- https://www.exploit-db.com/exploits/39809/Exploit, Third Party Advisory, VDB Entry
- https://www.exploit-db.com/exploits/40107/Exploit, Third Party Advisory, VDB Entry
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2016-0099US Government Resource
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.