SB2019021306 - Multiple vulnerabilities in Microsoft Windows Kernel

Description

This security bulletin contains information about 4 vulnerabilities.

1) Memory corruption (CVE-ID: CVE-2019-0656)

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 access to gain elevated privileges.

The vulnerability exists due to an error when the Windows kernel fails to properly handle objects in memory. A local attacker can run a specially crafted application and gain elevated privileges to cxecute arbitrary code on the system.

2) Memory corruption (CVE-ID: CVE-2019-0661)

CWE-ID: CWE-119 - Memory corruption

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

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

The vulnerability exists due to an error when the Windows kernel improperly handles objects in memory. A local attacker can run a specially crafted application and obtain information to further compromise the users system.

3) Memory corruption (CVE-ID: CVE-2019-0621)

CWE-ID: CWE-119 - Memory corruption

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

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

The vulnerability exists due to an error when the Windows kernel improperly handles objects in memory. A local attacker can run a specially crafted application and obtain information to further compromise the users system.

4) Information disclosure (CVE-ID: CVE-2019-0663)

CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor

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

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

The vulnerability exists due to an error when the Windows kernel improperly initializes objects in memory. A local attacker can run a specially crafted application and gain access to important data.

Remediation

Install update from vendor's website.

References

• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0656
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0661
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0621
• https://portal.msrc.microsoft.com/en-US/securit...