Multiple vulnerabilities in Microsoft Internet Explorer

Published: 2018-09-12 00:42:37 | Updated: 2018-09-13 17:39:24
Severity High
Patch available YES
Number of vulnerabilities 6
CVE ID CVE-2018-8461
CVE-2018-8447
CVE-2018-8470
CVE-2018-8315
CVE-2018-8452
CVE-2018-8457
CVSSv3 7.7 [CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
7.7 [CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
5.3 [CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C]
3.8 [CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]
3.8 [CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]
7.7 [CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
CWE ID CWE-119
CWE-79
CWE-125
Exploitation vector Network
Public exploit Not available
Vulnerable software Microsoft Internet Explorer
Microsoft Edge
ChakraCore
Vulnerable software versions Microsoft Internet Explorer 11
Microsoft Internet Explorer 9
Microsoft Internet Explorer 10
Microsoft Edge -
ChakraCore -
Vendor URL Microsoft

Security Advisory

1) Buffer overflow

Description

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

The vulnerability exists due to boundary error when processing HTML code. A remote unauthenticated attacker can create a specially crafted web page, trick the victim into visiting it, trigger memory corruption and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Remediation

Install updates from vendor's website.

External links

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8461

2) Buffer overflow

Description

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

The vulnerability exists due to boundary error when processing HTML code. A remote unauthenticated attacker can create a specially crafted web page, trick the victim into visiting it, trigger memory corruption and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Remediation

Install updates from vendor's website.

External links

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8447

3) Cross-site scripting

Description

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

The vulnerability exists due to insufficient sanitization of user-supplied data. 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 any page (opened or chached).


Remediation

Install updates from vendor's website.

External links

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8470

4) Buffer over-read

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to a boundary error while handling object types when parsing HTML content. A remote attacker can create a specially crafted web page, trick the victim into opening it, trigger out-of-bounds read and gain access to contents of memory.

Remediation

Install updates from vendor's website.

External links

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8315

5) Buffer over-read

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to a boundary error when parsing HTML content. A remote attacker can create a specially crafted web page, trick the victim into opening it, trigger out-of-bounds read and gain access to contents of memory.

Remediation

Install updates from vendor's website.

External links

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8452

6) Memory corruption

Description

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

The vulnerability exists due to a boundary error when processing HTML code within the scripting engine. A remote attacker can create a specially crafted website, trick the victim into visiting it, trigger memory corruption and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Remediation

Install updates from vendor's website.

External links

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8457

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