SB2020100809 - Insecure DLL loading in Cisco Webex Teams Client for Windows
Published: October 8, 2020
Security Bulletin ID
SB2020100809
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Insecure DLL loading (CVE-ID: CVE-2020-3535)
CWE-ID: CWE-427 - Uncontrolled Search Path Element
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 compromise vulnerable system.
The vulnerability exists due to incorrect handling of directory paths at run time in the loading mechanism of specific DLLs. A local user can place a specially crafted .dll file and execute arbitrary code with the privileges of another user’s account.
Remediation
Install update from vendor's website.