High severity · published Oct 5, 2018
CVE-2018-0438
Cisco Umbrella Enterprise Roaming Client Privilege Escalation Vulnerability
7.8
CVSS
1.4%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.4% · higher than 72% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CU
Cisco Umbrella · Cisco
All versions, or not specified · source: vendor
UE
Umbrella Enterprise Roaming Client · Cisco
before 2.1.127 · source: NVD
Affected product
CU
Cisco Umbrella
Cisco
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