Multiple vulnerabilities in Microsoft Internet Explorer

1) Information disclosure

EUVDB-ID: #VU992

Risk: High

CVSSv4.0: 5.1 [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:A/U:Amber]

CVE-ID: CVE-2016-3298

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 vulnerablity exists due to improper handling of objects in memory by the Internet Messaging API. A remote attacker can create a specially crafted content, trick the victim into opening it, bypass security restrictions and determine the existence of arbitrary files.

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

Note: the vulnerability was being actively exploited.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Microsoft Internet Explorer: 9 - 11

CPE2.3

External links

https://technet.microsoft.com/en-us/library/security/ms16-118
https://technet.microsoft.com/en-us/library/security/ms16-126

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.

2) Information disclosure

EUVDB-ID: #VU848

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-2016-3267

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

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

The weakness exists due to object memory handling error. A remote attacker can create a specially crafted content, trick the victim inro downloading it, trigger memory corruption and determine arbitrary files on the target system.

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

Mitigation

Install update from vendor's website.

Vulnerable software versions

Microsoft Internet Explorer: 9 - 11

Microsoft Edge: All versions

CPE2.3

External links

https://technet.microsoft.com/en-us/library/security/ms16-118
https://technet.microsoft.com/en-us/library/security/ms16-119

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) Memory corruption

EUVDB-ID: #VU932

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-2016-3331

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

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

The weakness is due to boundary error when handling malicious files. A remote attacker can create a specially crafted content, trick the victim into downloading 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: 9 - 11

Microsoft Edge: All versions

CPE2.3

External links

https://technet.microsoft.com/en-us/library/security/ms16-118
https://technet.microsoft.com/en-us/library/security/ms16-119

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) Memory corruption

EUVDB-ID: #VU930

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-2016-3382

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

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

The weakness exists due to boundary error in the Scripting Engine when handling malicious files. A remote attacker can create a specially crafted content, trick the victim into downloading it, trigger memory corruption and execute arbitrary code.

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: 9 - 11

Microsoft Edge: All versions

CPE2.3

External links

https://technet.microsoft.com/en-us/library/security/ms16-118
https://technet.microsoft.com/en-us/library/security/ms16-119

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) Memory corruption

EUVDB-ID: #VU931

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-2016-3383

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

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

The weakness exists due to boundary error when handling malicious files. A remote attacker can create a specially crafted content, trick the victim into opening 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: 10 - 11

CPE2.3

External links

https://technet.microsoft.com/en-us/library/security/ms16-118

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) Memory corruption

EUVDB-ID: #VU845

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-2016-3384

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

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

The weakness exists due to boundary error when handling malicious files. A remote attacker can create a specially crafted content, trick the victim into opening 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: 9 - 11

CPE2.3

External links

https://technet.microsoft.com/en-us/library/security/ms16-118

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) Memory corruption

EUVDB-ID: #VU929

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-2016-3385

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

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

The weakness exists due to boundary error when handling malicious files. A remote attacker can create a specially crafted content, trick the victim into opening 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: 9 - 11

CPE2.3

External links

https://technet.microsoft.com/en-us/library/security/ms16-118

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.

8) Privilege Escalation

EUVDB-ID: #VU928

Risk: Low

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

CVE-ID: CVE-2016-3387

CWE-ID: CWE-46 - Path Equivalence: 'filename ' (Trailing Space)

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to gain elevated privileges.

The weakness exists due to improper defense of private namespace by the browser. A remote attacker can create a specially crafted content, trick the victim into downloading it, gain privileged permissions to the namespace directory on the system.

Successful exploitation of the vulnerability will result in privilege escalation on the vulnerable system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Microsoft Internet Explorer: 10 - 11

Microsoft Edge: All versions

CPE2.3

External links

https://technet.microsoft.com/en-us/library/security/ms16-118
https://technet.microsoft.com/en-us/library/security/ms16-119

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.

9) Privilege Escalation

EUVDB-ID: #VU847

Risk: Low

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

CVE-ID: CVE-2016-3388

CWE-ID: CWE-46 - Path Equivalence: 'filename ' (Trailing Space)

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to gain elevated privileges.

The weakness is due to improper defense of private namespace by the browser. A remote attacker can create a specially crafted content, trick the victim into downloading it, gain privileged permissions to the namespace directory on the system.

Successful exploitation of the vulnerability will result in privilege escalation on the vulnerable system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Microsoft Internet Explorer: 10 - 11

Microsoft Edge: All versions

CPE2.3

External links

https://technet.microsoft.com/en-us/library/security/ms16-118
https://technet.microsoft.com/en-us/library/security/ms16-119

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.

10) Memory corruption

EUVDB-ID: #VU855

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-2016-3390

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

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

The weakness exists due to boundary error in the Scripting Engine when handling malicious files. A remote attacker can create a specially crafted content, trick the victim into downloading it, trigger memory corruption and execute arbitrary code.

Successful exploitation of the vulnerability will result in arbitrary code execution.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Microsoft Edge: All versions

Microsoft Internet Explorer: 11

CPE2.3

External links

https://technet.microsoft.com/en-us/library/security/ms16-118
https://technet.microsoft.com/en-us/library/security/ms16-119

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) Information disclosure

EUVDB-ID: #VU849

Risk: Low

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2016-3391

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 improper storage of credential data in memory. A remote attacker can access access a memory dump and get credential information.

Successful exploitation of the vulnerability will result in personal data disclosure.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Microsoft Internet Explorer: 9 - 11

CPE2.3

External links

https://technet.microsoft.com/en-us/library/security/ms16-118
https://technet.microsoft.com/en-us/library/security/ms16-119

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	High
Patch available	YES
Number of vulnerabilities	11
CVE-ID	CVE-2016-3298 CVE-2016-3267 CVE-2016-3331 CVE-2016-3382 CVE-2016-3383 CVE-2016-3384 CVE-2016-3385 CVE-2016-3387 CVE-2016-3388 CVE-2016-3390 CVE-2016-3391
CWE-ID	CWE-200 CWE-119 CWE-46
Exploitation vector	Network
Public exploit	Vulnerability #1 is being exploited in the wild. Public exploit code for vulnerability #8 is available. Public exploit code for vulnerability #9 is available.
Vulnerable software	Microsoft Internet Explorer Client/Desktop applications / Web browsers Microsoft Edge Client/Desktop applications / Web browsers
Vendor	Microsoft