CVE-2018-18555

CVSS V2 High 9 CVSS V3 Critical 9.9
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.
Overview
  • CVE ID
  • CVE-2018-18555
  • Assigner
  • cve@mitre.org
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2018-12-17T19:29:00
  • Last Modified Date
  • 2019-10-03T00:03:26
Weakness Enumerations
CWE URL
CWE-78 http://cwe.mitre.org/data/definitions/78.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:o:vyos:vyos:1.1.8:*:*:*:*:*:*:* 1 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:L/Au:S/C:C/I:C/A:C
  • Access Vector
  • NETWORK
  • Access Compatibility
  • LOW
  • Authentication
  • SINGLE
  • Confidentiality Impact
  • COMPLETE
  • Integrity Impact
  • COMPLETE
  • Availability Impact
  • COMPLETE
  • Base Score
  • 9
  • Severity
  • HIGH
  • Exploitability Score
  • 8
  • Impact Score
  • 10
CVSS Version 3
  • Version
  • 3.0
  • Vector String
  • CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • LOW
  • Privileges Required
  • LOW
  • User Interaction
  • NONE
  • Scope
  • CHANGED
  • Confidentiality Impact
  • HIGH
  • Availability Impact
  • HIGH
  • Base Score
  • 9.9
  • Base Severity
  • CRITICAL
  • Exploitability Score
  • 3.1
  • Impact Score
  • 6
References
Reference URL Reference Tags
https://blog.vyos.io/the-operator-level-is-proved-insecure-and-will-be-removed-in-the-next-releases Exploit Vendor Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2018-18555
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-18555
History
Created Old Value New Value Data Type Notes
2022-05-10 17:34:14 Added to TrackCVE
2022-12-03 15:26:46 2018-12-17T19:29Z 2018-12-17T19:29:00 CVE Published Date updated
2022-12-03 15:26:46 2019-10-03T00:03:26 CVE Modified Date updated
2022-12-03 15:26:46 Analyzed Vulnerability Status updated