SB2020101323 - Multiple vulnerabilities in Windows TCP/IP

Description

This security bulletin contains information about 2 secuirty vulnerabilities.

1) Buffer overflow (CVE-ID: CVE-2020-16899)

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to the Windows TCP/IP stack improperly handles ICMPv6 Router Advertisement packets. A remote attacker can send specially crafted ICMPv6 Router Advertisement packets, trigger memory corruption and cause a denial of service condition on the target system.

2) Buffer overflow (CVE-ID: CVE-2020-16898)

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

The vulnerability exists due to the Windows TCP/IP stack improperly handles ICMPv6 Router Advertisement packets. A remote attacker can send specially crafted ICMPv6 Router Advertisement packets, 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 update from vendor's website.

References

• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-16899
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-16898