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A step-by-step discussion of the latest Flash Player 0-day exploit:
http://secunia.com/blog/210


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TITLE:
Microsoft Internet Explorer Multiple Vulnerabilities

SECUNIA ADVISORY ID:
SA44153

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/44153/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=44153

RELEASE DATE:
2011-04-16

DISCUSS ADVISORY:
http://secunia.com/advisories/44153/#comments

AVAILABLE ON SITE AND IN CUSTOMER AREA:
 * Last Update
 * Popularity
 * Comments
 * Criticality Level
 * Impact
 * Where
 * Solution Status
 * Operating System / Software
 * CVE Reference(s)

http://secunia.com/advisories/44153/

ONLY AVAILABLE IN CUSTOMER AREA:
 * Authentication Level
 * Report Reliability
 * Secunia PoC
 * Secunia Analysis
 * Systems Affected
 * Approve Distribution
 * Remediation Status
 * Secunia CVSS Score
 * CVSS

https://ca.secunia.com/?page=viewadvisory&vuln_id=44153

ONLY AVAILABLE WITH SECUNIA CSI AND SECUNIA PSI:
 * AUTOMATED SCANNING

http://secunia.com/vulnerability_scanning/personal/
http://secunia.com/vulnerability_scanning/corporate/wsus_sccm_3rd_third_party_patching/

DESCRIPTION:
Some vulnerabilities have been reported in Microsoft Internet
Explorer, which can be exploited by malicious people to disclose
certain sensitive information, bypass certain security restrictions,
and compromise a user's system.

1) A user-after-free error when handling an object, which is
exchanged during a call to a certain function, can be exploited to
dereference already freed memory and execute arbitrary code via a
specially crafted web page.

NOTE: According to Microsoft, this vulnerability is currently being
exploited in limited, targeted attacks.

2) An error when attempting to access an uninitialised or deleted
  MSHTML object can be exploited to corrupt memory and execute
arbitrary code when a user visits a specially crafted web page.

3) An error in the handling of the frame tag object can be exploited
to disclose certain information or conduct clickjacking attacks.

4) An error in the handling of certain JavaScript objects can be
exploited to bypass domain restrictions and may allow to disclose
content from another domain or Internet Explorer zone.

5) An error exists in the handling of the "onPropertyChange" event
when set to an object's attribute collection. This can be exploited
to corrupt memory and execute arbitrary code when a user visits a
specially crafted web page.

NOTE: According to Microsoft, this vulnerability is currently being
exploited in limited, targeted attacks.

SOLUTION:
Apply patches.

Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

PROVIDED AND/OR DISCOVERED BY:
1) An anonymous person via iDefense. Also reported as a 0-day.
2) Reported by the vendor.
3, 4) The vendor credits David Bloom, Google.
5) Stephen Fewer, Harmony Security via ZDI. Also reported as a 0-day.

ORIGINAL ADVISORY:
MS11-018 (KB2497640):
http://www.microsoft.com/technet/security/bulletin/MS11-018.mspx

ZDI:
http://www.zerodayinitiative.com/advisories/ZDI-11-119/

iDefense:
http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=900

OTHER REFERENCES:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

DEEP LINKS:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

EXTENDED DESCRIPTION:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

EXTENDED SOLUTION:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

EXPLOIT:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

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About:
This Advisory was delivered by Secunia as a free service to help
private users keeping their systems up to date against the latest
vulnerabilities.

Subscribe:
http://secunia.com/advisories/secunia_security_advisories/

Definitions: (Criticality, Where etc.)
http://secunia.com/advisories/about_secunia_advisories/


Please Note:
Secunia recommends that you verify all advisories you receive by
clicking the link.
Secunia NEVER sends attached files with advisories.
Secunia does not advise people to install third party patches, only
use those supplied by the vendor.

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