SB2017101013 - Information disclosure in Microsoft Windows Kernel

Description

This security bulletin contains information about 4 vulnerabilities.

1) Information disclosure (CVE-ID: CVE-2017-11765)

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:L/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 weakness exists due to an error when the Windows kernel handles objects in memory. A local attacker can run a specially crafted application and gain access to arbitrary data.

Successful exploitation of the vulnerability may result in further attack.

2) Information disclosure (CVE-ID: CVE-2017-11814)

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:L/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 weakness exists due to an error when the Windows kernel handles objects in memory. A local attacker can run a specially crafted application and gain access to arbitrary data.

Successful exploitation of the vulnerability may result in further attack.

3) Information disclosure (CVE-ID: CVE-2017-11785)

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 attacker to obtain potentially sensitive information on the target system.

The vulnerability exists due to an error when the Windows kernel handles objects in memory. A local attacker can run a specially crafted application, retrieve the memory address of a kernel object and bypass Kernel Address Space Layout Randomization (ASLR).

Successful exploitation of the vulnerability may result in further attack.

4) Information disclosure (CVE-ID: CVE-2017-11784)

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 handles objects in memory. A local attacker can run a specially crafted application, retrieve the memory address of a kernel object and bypass Kernel Address Space Layout Randomization (ASLR).

Successful exploitation of the vulnerability may result in further attack.

Remediation

Install update from vendor's website.

References

• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-11765
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-11814
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-11785
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-11784