Multiple vulnerabilities in Microsoft Internet Explorer



Published: 2017-08-08
Risk High
Patch available YES
Number of vulnerabilities 7
CVE-ID CVE-2017-8651
CVE-2017-8625
CVE-2017-8641
CVE-2017-8635
CVE-2017-8636
CVE-2017-8669
CVE-2017-8653
CWE-ID CWE-119
CWE-264
Exploitation vector Network
Public exploit Public exploit code for vulnerability #3 is available.
Public exploit code for vulnerability #4 is available.
Public exploit code for vulnerability #5 is available.
Vulnerable software
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Microsoft Internet Explorer
Client/Desktop applications / Web browsers

Vendor Microsoft

Security Bulletin

This security bulletin contains information about 7 vulnerabilities.

1) Memory corruption

EUVDB-ID: #VU7756

Risk: High

CVSSv3.1: 8.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-8651

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 an error when handling objects in memory by Internet Explorer. A remote attacker can create a specially crafted website, trick the victim into visiting it, trigger memory corruption and execute arbitrary code with system privileges.

Successful exploitation of the vulnerability may result in system compromise.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Microsoft Internet Explorer: 9 - 10

External links

http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-8651


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) Security restrictions bypass

EUVDB-ID: #VU7758

Risk: Low

CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-8625

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

The vulnerability allows a local attacker to bypass security restrictions on the target system.

The weakness exists due to improper validation of User Mode Code Integrity (UMCI) policies by Internet Explorer. A local attacker can run a specially crafted application to bypass Device Guard UCMI policies.

Successful exploitation of the vulnerability may result in further attacks.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Microsoft Internet Explorer: 11

External links

http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-8625


Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

How the attacker can exploit this vulnerability?

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

The attacker would have to login to the system and perform certain actions in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

3) Memory corruption

EUVDB-ID: #VU7726

Risk: High

CVSSv3.1: 8.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:H/E:P/RL:O/RC:C]

CVE-ID: CVE-2017-8641

CWE-ID: CWE-119 - Memory corruption

Exploit availability: Yes

Description

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

The weakness exists due to an error when handling objects in memory by JavaScript engines. A remote attacker can create a specially crafted website, trick the victim into visiting it, trigger memory corruption and execute arbitrary code with system privileges.

Successful exploitation of the vulnerability may result in system compromise.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Microsoft Internet Explorer: 10 - 11

External links

http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-8641


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.

4) Memory corruption

EUVDB-ID: #VU7713

Risk: High

CVSSv3.1: 8.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H/E:P/RL:O/RC:C]

CVE-ID: CVE-2017-8635

CWE-ID: CWE-119 - Memory corruption

Exploit availability: Yes

Description

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

The weakness exists due to an error when handling objects in memory by JavaScript engines. A remote attacker can create a specially crafted website, trick the victim into visiting it, trigger memory corruption and execute arbitrary code with system privileges.

Successful exploitation of the vulnerability may result in system compromise.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Microsoft Internet Explorer: 10 - 11

External links

http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-8635


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.

5) Memory corruption

EUVDB-ID: #VU7714

Risk: High

CVSSv3.1: 8.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H/E:P/RL:O/RC:C]

CVE-ID: CVE-2017-8636

CWE-ID: CWE-119 - Memory corruption

Exploit availability: Yes

Description

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

The weakness exists due to an error when handling objects in memory by Microsoft browser JavaScript engines. A remote attacker can create a specially crafted website, trick the victim into visiting it, trigger memory corruption and execute arbitrary code with system privileges.

Successful exploitation of the vulnerability may result in system compromise.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Microsoft Internet Explorer: 9 - 11

External links

http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-8636


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.

6) Memory corruption

EUVDB-ID: #VU7751

Risk: High

CVSSv3.1: 8.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-8669

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 an error when handling objects in memory by Microsoft browsers. A remote attacker can create a specially crafted website, trick the victim into visiting it, trigger memory corruption and execute arbitrary code with system privileges.

Successful exploitation of the vulnerability may result in system compromise.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Microsoft Internet Explorer: 11

External links

http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-8669


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: #VU7753

Risk: High

CVSSv3.1: 8.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-8653

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 an error when handling objects in memory by Microsoft browsers. A remote attacker can create a specially crafted website, trick the victim into visiting it, trigger memory corruption and execute arbitrary code with system privileges.

Successful exploitation of the vulnerability may result in system compromise.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Microsoft Internet Explorer: 9 - 11

External links

http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-8653


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.



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