SB2017091215 - Multiple vulnerabilities in Win32.sys driver in Microsoft Windows
Published: September 12, 2017
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 8 vulnerabilities.
1) Memory corruption (CVE-ID: CVE-2017-8675)
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 escalate privileges on the target system.
The vulnerability exists due to boundary error in Win32k.sys driver when handling objects in memory. A local user can execute arbitrary code on the target system with elevated privileges.
2) Information disclosure (CVE-ID: CVE-2017-8677)
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.
A information disclosure vulnerability exists when the Windows GDI+ component improperly discloses kernel memory addresses within Win32k.sys driver. A local user can gain access to potentially sensitive information.
3) Information disclosure (CVE-ID: CVE-2017-8678)
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 improperly handles objects in memory. A local user can gain access to potentially sensitive information.
4) Information disclosure (CVE-ID: CVE-2017-8680)
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.
A information disclosure vulnerability exists when the Windows GDI+ component improperly discloses kernel memory addresses within Win32k.sys driver. A local user can gain access to potentially sensitive information.
5) Information disclosure (CVE-ID: CVE-2017-8681)
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.
A information disclosure vulnerability exists when the Windows GDI+ component improperly discloses kernel memory addresses within Win32k.sys driver. A local user can gain access to potentially sensitive information.
6) Information disclosure (CVE-ID: CVE-2017-8683)
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 Microsoft Windows Graphics Component improperly handles objects in memory within Win32k.sys driver. A local user can gain access to potentially sensitive information.
7) Information disclosure (CVE-ID: CVE-2017-8687)
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 in Windows kernel that could allow an attacker to retrieve information that could lead to a Kernel Address Space Layout Randomization (KASLR) bypass within Win32k.sys driver. A remote attacker can gain access to potentially sensitive information.
8) Buffer overflow (CVE-ID: CVE-2017-8720)
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 user to escalate privileges on the target system.
The vulnerability exists due to boundary error within Win32k.sys driver . A local user can execute arbitrary code on the target system with elevated privileges.
Remediation
Install update from vendor's website.
References
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-8675
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-8677
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-8678
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-8680
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-8681
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-8683
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-8687
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-8720