SB2018031328 - Privilege escalation in Windows Desktop Bridge
Published: March 13, 2018
Security Bulletin ID
SB2018031328
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
2
Exploitation vector
Local access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 2 vulnerabilities.
1) Privilege escalation (CVE-ID: CVE-2018-0877)
CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local attacker to gain elevated privileges on the target system.
The weakness exists due to the Desktop Bridge VFS does not take into acccount user/kernel mode when managing file paths. A local attacker can run a specially crafted application and gain system privileges to perform further attacks.
2) Privilege escalation (CVE-ID: CVE-2018-0880)
CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls
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:P/U:Clear
The vulnerability allows a local attacker to gain elevated privileges on the target system.
The weakness exists due to improper management of the virtual registry by Desktop Bridge. A local attacker can run a specially crafted application and run arbitrary code in kernel mode.
Remediation
Install update from vendor's website.