Home / vulnerabilities Secunia Security Advisory 46405
Posted on 12 October 2011
Source : packetstormsecurity.org Link
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TITLE:
Microsoft Windows win32k.sys Driver Multiple Vulnerabilities
SECUNIA ADVISORY ID:
SA46405
VERIFY ADVISORY:
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http://secunia.com/advisories/46405/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=46405
RELEASE DATE:
2011-10-11
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http://secunia.com/advisories/46405/#comments
AVAILABLE ON SITE AND IN CUSTOMER AREA:
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* Impact
* Where
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http://secunia.com/advisories/46405/
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https://ca.secunia.com/?page=viewadvisory&vuln_id=46405
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DESCRIPTION:
Multiple vulnerabilities have been reported in Microsoft Windows,
which can be exploited by malicious, local users to gain escalated
privileges and by malicious people to cause a DoS (Denial of Service)
and compromise a user's system.
1) A NULL-pointer dereference error in the win32k.sys driver can be
exploited to execute arbitrary code in kernel mode.
2) An error in the win32k.sys driver when performing type translation
can be exploited to cause a system hang via a specially crafted
TrueType font file.
3) An error in the win32k.sys driver when handling certain font files
can be exploited to cause a buffer overflow via a specially crafted
".fon" font file.
4) A use-after-free error in the win32k.sys driver when handling
certain driver objects can be exploited to execute arbitrary code in
kernel mode.
Successful exploitation of vulnerabilities #1, #3, and #4 allows
execution of arbitrary code.
SOLUTION:
Apply patches.
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/
PROVIDED AND/OR DISCOVERED BY:
4) Reported by the vendor.
The vendor also credits the following people:
1) Andrei Lutas, BitDefender and Tarjei Mandt, Norman.
2) Maik Wellmann.
3) Will Dorman, CERT/CC.
ORIGINAL ADVISORY:
MS11-077 (KB2567053):
http://technet.microsoft.com/en-us/security/bulletin/ms11-077
OTHER REFERENCES:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/
DEEP LINKS:
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EXTENDED DESCRIPTION:
Further details available in Customer Area:
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EXTENDED SOLUTION:
Further details available in Customer Area:
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EXPLOIT:
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