Remote code execution in Microsoft Internet Explorer

Published: 2011-01-22 | Updated: 2017-02-20
Severity Critical
Patch available YES
Number of vulnerabilities 1
CVE ID CVE-2011-1345
CWE ID CWE-119
Exploitation vector Network
Public exploit This vulnerability is being exploited in the wild.
Vulnerable software Microsoft Internet Explorer Subscribe
Vendor Microsoft

Security Advisory

This security advisory describes one critical risk vulnerability.

1) Memory corruption

Severity: Critical

CVSSv3: 8.9 [CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H/E:F/RL:O/RC:C] [PCI]

CVE-ID: CVE-2011-1345

CWE-ID: CWE-119 - Improper Restriction of Operations within the Bounds of a Memory Buffer

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The weakness exists due to boundary error when handling onPropertyChange function calls. A remote attacker can create a specially crafted Web site, trick the victim into visiting it, trigger memory corruption and execute arbitrary code on the system with privileges of the current user.

Successful exploitation of the vulnerability results in arbitrary code execution on the vulnerable system.

Note: the vulnerability was being actively exploited.

Mitigation

Install update from vendor's website:

Internet Explorer 6:
Windows XP Service Pack 3:
https://www.microsoft.com/downloads/details.aspx?FamilyID=c3a8cec0-f947-4d4e-a6ae-c7f4f1f311b0
http://go.microsoft.com/fwlink/?LinkId=208304
Windows XP Professional x64 Edition Service Pack 2:
https://www.microsoft.com/downloads/details.aspx?FamilyID=986f07ae-0fdc-4be2-8a74-5eb56d4300ef
http://go.microsoft.com/fwlink/?LinkId=208304
Windows Server 2003 Service Pack 2:
https://www.microsoft.com/downloads/details.aspx?FamilyID=b902c58a-9e2f-4352-8d2f-fffda5344598
http://go.microsoft.com/fwlink/?LinkId=208304
Windows Server 2003 x64 Edition Service Pack 2:
https://www.microsoft.com/downloads/details.aspx?FamilyID=5d8f14d1-85cc-478f-8b50-5c355a331f59
http://go.microsoft.com/fwlink/?LinkId=208304
Windows Server 2003 with SP2 for Itanium-based Systems:
https://www.microsoft.com/downloads/details.aspx?FamilyID=8afe86fc-58b4-4a95-b047-c09138fa4f5e
http://go.microsoft.com/fwlink/?LinkId=208304

Internet Explorer 7:
Windows XP Service Pack 3:
https://www.microsoft.com/downloads/details.aspx?FamilyID=0b7d0403-8965-4c62-970c-20b561f66713
http://go.microsoft.com/fwlink/?LinkId=208304
Windows XP Professional x64 Edition Service Pack 2:
https://www.microsoft.com/downloads/details.aspx?FamilyID=ed88f183-dd06-46f6-ae8a-a594a752f248
http://go.microsoft.com/fwlink/?LinkId=208304
Windows Server 2003 Service Pack 2:
https://www.microsoft.com/downloads/details.aspx?FamilyID=5c464287-3dab-4342-a38d-a12719d3b158
http://go.microsoft.com/fwlink/?LinkId=208304
Windows Server 2003 x64 Edition Service Pack 2:
https://www.microsoft.com/downloads/details.aspx?FamilyID=9d8bbea9-c456-4569-ad96-c2cd0f5fae7e
http://go.microsoft.com/fwlink/?LinkId=208304
Windows Server 2003 with SP2 for Itanium-based Systems:
https://www.microsoft.com/downloads/details.aspx?FamilyID=f1abfb48-3c8a-4b2d-b739-cc61628b387d
http://go.microsoft.com/fwlink/?LinkId=208304
Windows Vista Service Pack 1 and Windows Vista Service Pack 2:
https://www.microsoft.com/downloads/details.aspx?FamilyID=00c3c176-feff-4022-ac4c-2d4732ca3d78
http://go.microsoft.com/fwlink/?LinkId=208304
Windows Vista x64 Edition Service Pack 1 and Windows Vista x64 Edition Service Pack 2:
https://www.microsoft.com/downloads/details.aspx?FamilyID=79f52733-44e4-47b6-86ca-1395a095b4e7
http://go.microsoft.com/fwlink/?LinkId=208304
Windows Server 2008 for 32-bit Systems and Windows Server 2008 for 32-bit Systems Service Pack 2:
https://www.microsoft.com/downloads/details.aspx?FamilyID=7d8603b8-bb52-4cf6-be8b-bb3475d30fc5
http://go.microsoft.com/fwlink/?LinkId=208304
Windows Server 2008 for x64-based Systems and Windows Server 2008 for x64-based Systems Service Pack 2:
https://www.microsoft.com/downloads/details.aspx?FamilyID=c6d58f64-bdd5-4fe6-96f4-9641b8e7b570
http://go.microsoft.com/fwlink/?LinkId=208304
Windows Server 2008 for Itanium-based Systems and Windows Server 2008 for Itanium-based Systems Service Pack 2:
https://www.microsoft.com/downloads/details.aspx?FamilyID=f6f6f22c-fc7f-4e96-b6b5-be3c1acecf6e
http://go.microsoft.com/fwlink/?LinkId=208304

Internet Explorer 8:
Windows XP Service Pack 3:
https://www.microsoft.com/downloads/details.aspx?familyid=689c5496-56c4-48a6-9f3d-b5f5aaf3e566
http://go.microsoft.com/fwlink/?LinkId=208304
Windows XP Professional x64 Edition Service Pack 2:
https://www.microsoft.com/downloads/details.aspx?familyid=6d3433ee-c2e1-433f-a3d9-c049d66e2190
http://go.microsoft.com/fwlink/?LinkId=208304
Windows Server 2003 Service Pack 2:
https://www.microsoft.com/downloads/details.aspx?familyid=45feb35b-b24e-4160-adb0-d0b7ae530e90
http://go.microsoft.com/fwlink/?LinkId=208304
Windows Server 2003 x64 Edition Service Pack 2:
https://www.microsoft.com/downloads/details.aspx?familyid=979d2ec5-5114-4ec7-aa97-e9289c590cbb
http://go.microsoft.com/fwlink/?LinkId=208304
Windows Vista Service Pack 1 and Windows Vista Service Pack 2:
https://www.microsoft.com/downloads/details.aspx?familyid=5ea94705-4f76-4b0d-bbbc-afb5e75204bf
http://go.microsoft.com/fwlink/?LinkId=208304
Windows Vista x64 Edition Service Pack 1 and Windows Vista x64 Edition Service Pack 2:
https://www.microsoft.com/downloads/details.aspx?familyid=bc63b233-9db0-4fb1-a61c-fa7e9e44ba10
http://go.microsoft.com/fwlink/?LinkId=208304
Windows Server 2008 for 32-bit Systems and Windows Server 2008 for 32-bit Systems Service Pack 2:
https://www.microsoft.com/downloads/details.aspx?familyid=d5d76e90-1cef-47e8-9d8d-2c5a43f42ba3
http://go.microsoft.com/fwlink/?LinkId=208304
Windows Server 2008 for x64-based Systems and Windows Server 2008 for x64-based Systems Service Pack 2:
https://www.microsoft.com/downloads/details.aspx?familyid=51203a31-368b-4b47-96a5-9e9e5a55cd76
http://go.microsoft.com/fwlink/?LinkId=208304
Windows 7 for 32-bit Systems and Windows 7 for 32-bit Systems Service Pack 1
https://www.microsoft.com/downloads/details.aspx?familyid=59676b71-8b9d-4230-a9e0-b20db3e3ec7e
http://go.microsoft.com/fwlink/?LinkId=208304
Windows 7 for x64-based Systems and Windows 7 for x64-based Systems Service Pack 1:
https://www.microsoft.com/downloads/details.aspx?familyid=3a998678-2678-489e-8711-39322663147d
http://go.microsoft.com/fwlink/?LinkId=208304
Windows Server 2008 R2 for x64-based Systems and Windows Server 2008 R2 for x64-based Systems Service Pack 1:
https://www.microsoft.com/downloads/details.aspx?familyid=c7b2482b-44bf-4c01-99d8-f93868659a24
http://go.microsoft.com/fwlink/?LinkId=208304
Windows Server 2008 R2 for Itanium-based Systems and Windows Server 2008 R2 for Itanium-based Systems Service Pack 1:
https://www.microsoft.com/downloads/details.aspx?familyid=af6db318-fbec-4286-a3a7-4081620146e5
http://go.microsoft.com/fwlink/?LinkId=208304

Vulnerable software versions

Microsoft Internet Explorer: 6, 7, 8

CPE External links

https://technet.microsoft.com/en-us/library/security/ms11-018.aspx

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to visit a specially crafted website.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, a fully functional exploit for this vulnerability is available.