SB2017091222 - Multiple information disclosure vulnerabilities in Windows kernel

Description

This security bulletin contains information about 4 vulnerabilities.

1) Information disclosure (CVE-ID: CVE-2017-8679)

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 user to obtain potentially sensitive information.

An information disclosure vulnerability exists when the Windows kernel improperly handles objects in memory. A local user can gain access to potentially sensitive information.

2) Information disclosure (CVE-ID: CVE-2017-8708)

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:P/U:Clear

The vulnerability allows a local user to obtain potentially sensitive information.

An information disclosure vulnerability exists when the Windows kernel fails to properly initialize a memory address, allowing an attacker to retrieve information that could lead to a Kernel Address Space Layout Randomization (KASLR) bypass. A local user can gain access to potentially sensitive information.

3) Information disclosure (CVE-ID: CVE-2017-8709)

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 user to obtain potentially sensitive information.

An information disclosure vulnerability exists when the Windows kernel improperly handles objects in memory. A local user can gain access to potentially sensitive information.

4) Information disclosure (CVE-ID: CVE-2017-8719)

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 user to obtain potentially sensitive information.

An information disclosure vulnerability exists when the Windows kernel improperly handles objects in memory. A local user can gain access to potentially sensitive information.

Remediation

Install update from vendor's website.

References

• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-8679
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-8708
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-8709
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-8719