Multiple vulnerabilities in Microsoft Internet Explorer

1) Use-after-free error

EUVDB-ID: #VU4048

Risk: High

CVSSv4.0: 6.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2012-1880

Exploit availability: No

Description

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

The weakness exists due to a use-after-free error related to insertRow when attempting to access objects that have been deleted. A remote attacker can create a specially crafted Web site, trick the victim into viewing it, trigger memory corruption and execute arbitrary code with privileges of the current user.

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

Mitigation

Install update from vendor's website.

Vulnerable software versions

Microsoft Internet Explorer: 6 - 9

CPE2.3

External links

https://technet.microsoft.com/en-us/library/security/ms12-037

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.

2) Use-after-free error

EUVDB-ID: #VU4047

Risk: High

CVSSv4.0: 6.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2012-1879

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

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

The weakness exists due to a use-after-free error related to insertAdjacentText when attempting to access objects that have been deleted. A remote attacker can create a specially crafted Web site, trick the victim into viewing it, trigger memory corruption and execute arbitrary code with privileges of the current user.

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

Mitigation

Install update from vendor's website.

Vulnerable software versions

Microsoft Internet Explorer: 6 - 9

CPE2.3

External links

https://technet.microsoft.com/en-us/library/security/ms12-037

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.

3) Information disclosure

EUVDB-ID: #VU4046

Risk: Low

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2012-1882

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

Description

The vulnerability allows a remote attacker to obtain potentially sensitive information on the target system.

The weakness exists due to an error related to Scrolling Events. A remote attacker can create a specially crafted Web site, trick the victim into visiting it and view sensitive data in another domain or Internet Explorer zone.

Successful exploitation of the vulnerability results in information disclosure on the vulnerable system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Microsoft Internet Explorer: 6 - 9

CPE2.3

External links

https://technet.microsoft.com/en-us/library/security/ms12-037

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.

4) Use-after-free error

EUVDB-ID: #VU4043

Risk: High

CVSSv4.0: 6.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2012-1881

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

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

The weakness exists due to a use-after-free error related to OnRowsInserted Event when attempting to access objects that have been deleted. A remote attacker can create a specially crafted Web site, trick the victim into viewing it, trigger memory corruption and execute arbitrary code with privileges of the current user.

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

Mitigation

Install update from vendor's website.

Vulnerable software versions

Microsoft Internet Explorer: 8 - 9

CPE2.3

External links

https://technet.microsoft.com/en-us/library/security/ms12-037

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.

5) Use-after-free error

EUVDB-ID: #VU4041

Risk: High

CVSSv4.0: 6.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2012-1878

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

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

The weakness exists due to a use-after-free error related to OnBeforeDeactivate Event when attempting to access objects that have been deleted. A remote attacker can create a specially crafted Web site, trick the victim into viewing it, trigger memory corruption and execute arbitrary code with privileges of the current user.

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

Mitigation

Install update from vendor's website.

Vulnerable software versions

Microsoft Internet Explorer: 6 - 9

CPE2.3

External links

https://technet.microsoft.com/en-us/library/security/ms12-037

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.

6) Use-after-free error

EUVDB-ID: #VU4040

Risk: High

CVSSv4.0: 6.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2012-1877

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

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

The weakness exists due to a use-after-free error related to Title Element Change when attempting to access objects that have been deleted. A remote attacker can create a specially crafted Web site, trick the victim into viewing it, trigger memory corruption and execute arbitrary code with privileges of the current user.

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

Mitigation

Install update from vendor's website.

Vulnerable software versions

Microsoft Internet Explorer: 6 - 9

CPE2.3

External links

https://technet.microsoft.com/en-us/library/security/ms12-037

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.

7) Heap-based buffer overflow

EUVDB-ID: #VU4019

Risk: High

CVSSv4.0: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A/U:Amber]

CVE-ID: CVE-2012-1876

CWE-ID: CWE-122 - Heap-based Buffer Overflow

Exploit availability: Yes

Description

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

The weakness exists due to heap-based buffer overflow related to Col Element. A remote attacker can create a specially crafted Web site, trick the victim into viewing it, trigger memory corruption and execute arbitrary code with privileges of the current user.

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

Mitigation

Install update from vendor's website.

Vulnerable software versions

Microsoft Internet Explorer: 6 - 9

CPE2.3

External links

https://technet.microsoft.com/en-us/library/security/ms12-037

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?

Yes. This vulnerability is being exploited in the wild.

8) Use-after-free error

EUVDB-ID: #VU4018

Risk: Critical

CVSSv4.0: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A/U:Red]

CVE-ID: CVE-2012-1875

CWE-ID: CWE-416 - Use After Free

Exploit availability: Yes

Description

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

The weakness exists due to a use-after-free error related to same id property when attempting to access objects that have been deleted. A remote attacker can create a specially crafted Web site, trick the victim into viewing it, trigger memory corruption and execute arbitrary code 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.

Vulnerable software versions

Microsoft Internet Explorer: 8

CPE2.3

cpe:2.3:a:microsoft:microsoft_internet_explorer:8:*:*:*:*:*:*:*

External links

https://technet.microsoft.com/en-us/library/security/ms12-037

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?

Yes. This vulnerability is being exploited in the wild.

9) Use-after-free error

EUVDB-ID: #VU4017

Risk: High

CVSSv4.0: 6.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2012-1874

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

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

The weakness exists due to a use-after-free error related to Developer Toolbar when attempting to access objects that have been deleted. A remote attacker can create a specially crafted Web site, trick the victim into viewing it, trigger memory corruption and execute arbitrary code with privileges of the current user.

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

Mitigation

Install update from vendor's website.

Vulnerable software versions

Microsoft Internet Explorer: 8 - 9

CPE2.3

External links

https://technet.microsoft.com/en-us/library/security/ms12-037

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.

10) Information disclosure

EUVDB-ID: #VU4016

Risk: Low

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2012-1873

CWE-ID: CWE-626 - Null Byte Interaction Error (Poison Null Byte)

Exploit availability: No

Description

The vulnerability allows a remote attacker to obtain potentially sensitive information on the target system.

The weakness exists due to null byte interaction error. A remote attacker can create a specially crafted Web site, trick the victim into visiting it and view content from the Internet Explorer process memory.

Successful exploitation of the vulnerability results in information disclosure on the vulnerable system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Microsoft Internet Explorer: 7 - 9

CPE2.3

External links

https://technet.microsoft.com/en-us/library/security/ms12-037

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.

11) Cross-site scripting

EUVDB-ID: #VU4002

Risk: Medium

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U/U:Green]

CVE-ID: CVE-2012-1872

CWE-ID: CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-input in EUC-JP Character Encoding. A remote attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in user’s browser in context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.

Mitigation

Install update from vendors' website.

Vulnerable software versions

Microsoft Internet Explorer: 6 - 9

CPE2.3

External links

https://technet.microsoft.com/en-us/library/security/ms12-037

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.

12) Cross-site scripting

EUVDB-ID: #VU3998

Risk: Low

CVSSv4.0: 2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:P/U:Clear]

CVE-ID: CVE-2012-1858

CWE-ID: CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-input by SafeHTML. A remote attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in user’s browser in context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.

Mitigation

Install update from vendors' website.

Vulnerable software versions

Microsoft Internet Explorer: 8 - 9

CPE2.3

External links

https://technet.microsoft.com/en-us/library/security/ms12-037

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, proof of concept for this vulnerability is available.

13) Use-after-free error

EUVDB-ID: #VU3993

Risk: High

CVSSv4.0: 6.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2012-1523

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

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

The weakness exists due to a use-after-free error related to Center Element when attempting to access objects that have been deleted. A remote attacker can create a specially crafted Web site, trick the victim into viewing it, trigger memory corruption and execute arbitrary code with privileges of the current user.

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

Mitigation

Install update from vendor's website.

Vulnerable software versions

Microsoft Internet Explorer: 6 - 8

CPE2.3

External links

https://technet.microsoft.com/en-us/library/security/ms12-037

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.

Risk	Critical
Patch available	YES
Number of vulnerabilities	13
CVE-ID	CVE-2012-1880 CVE-2012-1879 CVE-2012-1882 CVE-2012-1881 CVE-2012-1878 CVE-2012-1877 CVE-2012-1876 CVE-2012-1875 CVE-2012-1874 CVE-2012-1873 CVE-2012-1872 CVE-2012-1858 CVE-2012-1523
CWE-ID	CWE-416 CWE-200 CWE-122 CWE-626 CWE-79
Exploitation vector	Network
Public exploit	Vulnerability #7 is being exploited in the wild. Vulnerability #8 is being exploited in the wild. Public exploit code for vulnerability #12 is available.
Vulnerable software	Microsoft Internet Explorer Client/Desktop applications / Web browsers
Vendor	Microsoft