// For flags

CVE-2021-28098

 

Severity Score

7.8
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

2
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

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.

Se detectó un problema en Forescout CounterACT versiones anteriores a 8.1.4. Se presenta una vulnerabilidad de escalada de privilegios local en la función de registro. SecureConnector se ejecuta con privilegios administrativos y escribe entradas de registros en un archivo in %PROGRAMDATA%\ForeScout SecureConnector\ que presenta permisos completos para el grupo Everyone. El uso de un enlace simbólico permite que un atacante apunte el archivo de registro a una ubicación privilegiada como %WINDIR%\System32. El archivo de registro resultante adopta los permisos de archivo de la fuente del enlace simbólico (en este caso, el grupo Everyone). El archivo de registro en System32 se puede reemplazar y renombrar con una DLL maliciosa para el secuestro de DLL

*Credits: N/A
CVSS Scores
Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Local
Attack Complexity
Medium
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2021-03-08 CVE Reserved
  • 2021-04-14 CVE Published
  • 2023-12-29 EPSS Updated
  • 2024-08-03 CVE Updated
  • 2024-08-03 First Exploit
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
CWE
  • CWE-59: Improper Link Resolution Before File Access ('Link Following')
  • CWE-427: Uncontrolled Search Path Element
  • CWE-732: Incorrect Permission Assignment for Critical Resource
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Forescout
Search vendor "Forescout"
 Counteract
Search vendor "Forescout" for product "Counteract"
 < 8.1.4
Search vendor "Forescout" for product "Counteract" and version " < 8.1.4"
-
Affected