CVE-2010-4398 on CISA KEV

Stack-based buffer overflow in the RtlQueryRegistryValues function in win32k.sys in Microsoft Windows XP SP2 and SP3, Windows Server 2003 SP2, Windows Vista SP1 and SP2, Windows Server 2008 Gold, SP2, and R2, and Windows 7 allows local users to gain privileges, and bypass the Use

01What CISA says about this vulnerability

Stack-based buffer overflow in the RtlQueryRegistryValues function in win32k.sys in Microsoft Windows XP SP2 and SP3, Windows Server 2003 SP2, Windows Vista SP1 and SP2, Windows Server 2008 Gold, SP2, and R2, and Windows 7 allows local users to gain privileges, and bypass the User Account Control (UAC) feature, via a crafted REG_BINARY value for a SystemDefaultEUDCFont registry key, aka "Driver…

02Required action — verbatim from CISA

Apply updates per vendor instructions.

03Notes & references

• isc.sans.edu — http://isc.sans.edu/diary.html?storyid=9988
• www.securityfocus.com — http://www.securityfocus.com/bid/45045
• www.exploit-db.com — http://www.exploit-db.com/exploits/15609/
• nakedsecurity.sophos.com — http://nakedsecurity.sophos.com/2010/11/25/new-windows-zero-day-flaw-bypasses-ua…
• support.avaya.com — http://support.avaya.com/css/P8/documents/100127248
• www.vupen.com — http://www.vupen.com/english/advisories/2011/0324
• www.exploit-db.com — http://www.exploit-db.com/bypassing-uac-with-user-privilege-under-windows-vista7…
• twitter.com — http://twitter.com/msftsecresponse/statuses/7590788200402945
• docs.microsoft.com — https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-01…
• www.securitytracker.com — http://www.securitytracker.com/id?1025046
• www.kb.cert.org — http://www.kb.cert.org/vuls/id/529673
• secunia.com — http://secunia.com/advisories/42356
• oval.cisecurity.org — https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3…

04SARA's analyst layer — why this matters

This vulnerability is currently on the CISA KEV list, which CISA only adds CVEs to when there is reliable evidence of active exploitation in the wild. For federal civilian agencies, BOD 22-01 requires remediation by the due date above. For everyone else, KEV is the strongest "patch immediately" signal you can get from public threat intel.

05Affected products (summary)

Vendor	Product	Versions
n	a / n/a	n/a

06Detection

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