SB2018071020 - Multiple vulnerabilities in Microsoft Windows

Description

This security bulletin contains information about 3 secuirty vulnerabilities.

1) Memory corruption (CVE-ID: CVE-2018-8309)

The vulnerability allows a local attacker to cause DoS condition on the target system.

The vulnerability exists due to improper handling of objects in memory. A local attacker can run a specially crafted application, trigger memory corruption and cause a target system to stop responding.

2) Privilege escalation (CVE-ID: CVE-2018-8314)

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

The vulnerability exists due to a sandbox escape when Windows file picker handles paths. A local attacker can use the sandbox escape to gain SYSTEM privileges.

3) Privilege escalation (CVE-ID: CVE-2018-8313)

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

The vulnerability exists due to improper enforcement of permissions by the Windows Kernel API. A local attacker can run a specially crafted application to impersonate processes, interject cross-process communication, or interrupt system functionality.

Remediation

Install update from vendor's website.

References

• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8309
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8314
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8313