CVE-2018-0438 — Cisco Umbrella Enterprise Roaming Client Privilege Escalation Vulnerability

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.

Affected products

Vendor	Product	Affected	Fixed
Cisco	Cisco Umbrella	—	—

Public exploits

Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.

Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.

Exploit-DB 1

Cisco Umbrella Roaming Client 2.0.168 - Local Privilege Escalation EDB-45339 · local · Sep 6, 2018

Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.

References

20180905 Cisco Umbrella Enterprise Roaming Client Privilege Escalation Vulnerability vendor-advisory
105286 vdb-entry
45339 exploit