SB2018081431 - Privilege escalation in Microsoft Windows NDIS

Description

This security bulletin contains information about 2 vulnerabilities.

1) Privilege escalation (CVE-ID: CVE-2018-8342)

CWE-ID: CWE-119 - Memory corruption

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

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

The vulnerability exists in the Network Driver Interface Specification (NDIS) due to ndis.sys fails to check the length of a buffer prior to copying memory to it. A local attacker can run a specially crafted application and trigger memory corruption to gain SYSTEM privileges.

2) Privilege escalation (CVE-ID: CVE-2018-8343)

CWE-ID: CWE-119 - Memory corruption

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

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

The vulnerability exists in the Network Driver Interface Specification (NDIS) due to ndis.sys fails to check the length of a buffer prior to copying memory to it. A local attacker can run a specially crafted application and trigger memory corruption to gain SYSTEM privileges.

Remediation

Install update from vendor's website.

References

• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8342
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8343