// For flags

CVE-2018-0438

Cisco Umbrella Enterprise Roaming Client Privilege Escalation Vulnerability

Severity Score

7.8
*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

1
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

A vulnerability in the Cisco Umbrella Enterprise Roaming Client (ERC) could allow an authenticated, local attacker to elevate privileges to Administrator. To exploit the vulnerability, the attacker must authenticate with valid local user credentials. This vulnerability is due to improper implementation of file system permissions, which could allow non-administrative users to place files within restricted directories. An attacker could exploit this vulnerability by placing an executable file within the restricted directory, which when executed by the ERC client, would run with Administrator privileges.

Una vulnerabilidad en Cisco Umbrella Enterprise Roaming Client (ERC) podría permitir que un atacante local autenticado eleve privilegios a Administrator. Para explotar esta vulnerabilidad, el atacante debe autenticarse con credenciales de usuario local válidas. Esta vulnerabilidad se debe a una implementación incorrecta de los permisos del sistema de archivos, lo que podría permitir que los usuarios no administrativos ubiquen archivos en directorios restringidos. Un atacante podría explotar esta vulnerabilidad ubicando un archivo ejecutable en el directorio restringido que, cuando lo ejecute el cliente ERC, se ejecutará con privilegios Administrator.

Cisco Umbrella Roaming Client version 2.0.168 suffers from a privilege escalation vulnerability.

*Credits: N/A
CVSS Scores
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Local
Attack Complexity
Low
Authentication
None
Confidentiality
Complete
Integrity
Complete
Availability
Complete
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2017-11-27 CVE Reserved
  • 2018-09-06 CVE Published
  • 2023-03-08 EPSS Updated
  • 2024-09-16 CVE Updated
  • 2024-09-16 First Exploit
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
CWE
  • CWE-20: Improper Input Validation
  • CWE-269: Improper Privilege Management
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Cisco
Search vendor "Cisco"
 Umbrella Enterprise Roaming Client
Search vendor "Cisco" for product "Umbrella Enterprise Roaming Client"
 < 2.1.127
Search vendor "Cisco" for product "Umbrella Enterprise Roaming Client" and version " < 2.1.127"
-
Affected
in Microsoft
Search vendor "Microsoft"
 Windows
Search vendor "Microsoft" for product "Windows"
--
Safe