SB2018081416 - Multiple vulnerabilities in Microsoft Internet Explorer

Description

This security bulletin contains information about 10 secuirty vulnerabilities.

1) Memory corruption (CVE-ID: CVE-2018-8353)

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

The vulnerability exists due to boundary error when the scripting engine handles objects in memory in Internet Explorer. A remote unauthenticated attacker can trick the victim into visiting a specially crafted website, trigger memory corruption and execute arbitrary code with elevated privileges.

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

2) Memory corruption (CVE-ID: CVE-2018-8389)

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

The vulnerability exists due to boundary error when the scripting engine handles objects in memory in Internet Explorer. A remote unauthenticated attacker can trick the victim into visiting a specially crafted website, trigger memory corruption and execute arbitrary code with elevated privileges.

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

3) Memory corruption (CVE-ID: CVE-2018-8371)

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

The vulnerability exists due to boundary error when the scripting engine handles objects in memory in Internet Explorer. A remote unauthenticated attacker can trick the victim into visiting a specially crafted website, trigger memory corruption and execute arbitrary code with elevated privileges.

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

4) Improper input validation (CVE-ID: CVE-2018-8316)

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

The vulnerability exists due to boundary error when Internet Explorer improperly validates hyperlinks before loading executable libraries. A remote unauthenticated attacker can trick the victim into visiting a specially crafted website and execute arbitrary code with elevated privileges.

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

5) Memory corruption (CVE-ID: CVE-2018-8403)

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

The vulnerability exists due to boundary error when Microsoft browsers access objects in memory. A remote unauthenticated attacker can trick the victim into visiting a specially crafted website, trigger memory corruption and execute arbitrary code with elevated privileges.

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

6) Information disclosure (CVE-ID: CVE-2018-8351)

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

The vulnerability exists due to an error when affected Microsoft browsers improperly allow cross-frame interaction. A remote unauthenticated attacker can trick the victim into visiting a specially crafted website and obtain browser frame or window state from a different domain.

7) Memory corruption (CVE-ID: CVE-2018-8355)

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

The vulnerability exists due to boundary error when the scripting engine handles objects in memory in Microsoft browsers. A remote unauthenticated attacker can trick the victim into visiting a specially crafted website, trigger memory corruption and execute arbitrary code with elevated privileges.

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

8) Memory corruption (CVE-ID: CVE-2018-8385)

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

The vulnerability exists due to boundary error when the scripting engine handles objects in memory in Microsoft browsers. A remote unauthenticated attacker can trick the victim into visiting a specially crafted website, trigger memory corruption and execute arbitrary code with elevated privileges.

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

9) Memory corruption (CVE-ID: CVE-2018-8372)

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

The vulnerability exists due to boundary error when the scripting engine handles objects in memory in Microsoft browsers. A remote unauthenticated attacker can trick the victim into visiting a specially crafted website, trigger memory corruption and execute arbitrary code with elevated privileges.

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

10) Privilege escalation (CVE-ID: CVE-2018-8357)

The vulnerability allows a remote attacker to gain elevated privileges on the target system.

The vulnerability exists due to sandbox escape. A remote unauthenticated attacker can trick the victim into visiting a specially crafted website and use the sandbox escape to elevate privileges.

Remediation

Install update from vendor's website.

References

• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8353
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8389
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8371
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8316
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8403
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8351
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8355
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8385
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8372
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8357