CVE-2021-20139

CVSS V2 High 8.3 CVSS V3 High 8.8
Description
An unauthenticated command injection vulnerability exists in the parameters of operation 3 in the controller_server service on Gryphon Tower routers. An unauthenticated remote attacker on the same network can execute commands as root on the device by sending a specially crafted malicious packet to the controller_server service on port 9999.
Overview
  • CVE ID
  • CVE-2021-20139
  • Assigner
  • vulnreport@tenable.com
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2021-12-09T16:15:07
  • Last Modified Date
  • 2021-12-13T18:06:15
Weakness Enumerations
CWE URL
CWE-78 http://cwe.mitre.org/data/definitions/78.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
AND
cpe:2.3:o:gryphonconnect:gryphon_tower_firmware:*:*:*:*:*:*:*:* 1 OR 04.0004.12
cpe:2.3:h:gryphonconnect:gryphon_tower:-:*:*:*:*:*:*:* 0 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:A/AC:L/Au:N/C:C/I:C/A:C
  • Access Vector
  • ADJACENT_NETWORK
  • Access Compatibility
  • LOW
  • Authentication
  • NONE
  • Confidentiality Impact
  • COMPLETE
  • Integrity Impact
  • COMPLETE
  • Availability Impact
  • COMPLETE
  • Base Score
  • 8.3
  • Severity
  • HIGH
  • Exploitability Score
  • 6.5
  • Impact Score
  • 10
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  • Attack Vector
  • ADJACENT_NETWORK
  • Attack Compatibility
  • LOW
  • Privileges Required
  • NONE
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • HIGH
  • Availability Impact
  • HIGH
  • Base Score
  • 8.8
  • Base Severity
  • HIGH
  • Exploitability Score
  • 2.8
  • Impact Score
  • 5.9
References
Reference URL Reference Tags
https://www.tenable.com/security/research/tra-2021-51 Exploit Vendor Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2021-20139
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-20139
History
Created Old Value New Value Data Type Notes
2022-05-10 06:41:32 Added to TrackCVE
2022-12-06 03:28:05 2021-12-09T16:15Z 2021-12-09T16:15:07 CVE Published Date updated
2022-12-06 03:28:05 2021-12-13T18:06:15 CVE Modified Date updated
2022-12-06 03:28:05 Analyzed Vulnerability Status updated