Vulnerability Description
An issue was discovered in Forescout CounterACT before 8.1.4. A local privilege escalation vulnerability is present in the logging function. SecureConnector runs with administrative privileges and writes logs entries to a file in %PROGRAMDATA%\ForeScout SecureConnector\ that has full permissions for the Everyone group. Using a symbolic link allows an attacker to point the log file to a privileged location such as %WINDIR%\System32. The resulting log file adopts the file permissions of the source of the symbolic link (in this case, the Everyone group). The log file in System32 can be replaced and renamed with a malicious DLL for DLL hijacking.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Forescout | Counteract | < 8.1.4 |
Related Weaknesses (CWE)
References
- https://docs.forescout.comVendor Advisory
- https://jordanpotti.com/2021/03/30/forescout-priv-esc-folder-permissions/ExploitThird Party Advisory
- https://www.adversis.io/research/2021/3/30/forescout-secure-connector-local-privExploitThird Party Advisory
- https://docs.forescout.comVendor Advisory
- https://jordanpotti.com/2021/03/30/forescout-priv-esc-folder-permissions/ExploitThird Party Advisory
- https://www.adversis.io/research/2021/3/30/forescout-secure-connector-local-privExploitThird Party Advisory
FAQ
What is CVE-2021-28098?
CVE-2021-28098 is a vulnerability with a CVSS score of 7.8 (HIGH). An issue was discovered in Forescout CounterACT before 8.1.4. A local privilege escalation vulnerability is present in the logging function. SecureConnector runs with administrative privileges and wri...
How severe is CVE-2021-28098?
CVE-2021-28098 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-28098?
Check the references section above for vendor advisories and patch information. Affected products include: Forescout Counteract.