CVE-2018-18555

CRITICAL

VyOS 1.1.8 - Authenticated OS Command Injection via Management Shell Escape

Title source: llm

Description

A sandbox escape issue was discovered in VyOS 1.1.8. It provides a restricted management shell for operator users to administer the device. By issuing various shell special characters with certain commands, an authenticated operator user can break out of the management shell and gain access to the underlying Linux shell. The user can then run arbitrary operating system commands with the privileges afforded by their account.

References (1)

Core 1

Core References

Exploit, Vendor Advisory x_refsource_confirm

https://blog.vyos.io/the-operator-level-is-proved-insecure-and-will-be-removed-in-the-next-releases

Scores

CVSS v3 9.9

EPSS 0.0177

EPSS Percentile 75.3%

Attack Vector NETWORK

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Details

CWE

CWE-78

Status published

Products (1)

vyos/vyos 1.1.8

Published Dec 17, 2018

Tracked Since Feb 18, 2026