CVE-2018-3954

CVSS V2 High 9 CVSS V3 High 7.2
Description
Devices in the Linksys ESeries line of routers (Linksys E1200 Firmware Version 2.0.09 and Linksys E2500 Firmware Version 3.0.04) are susceptible to OS command injection vulnerabilities due to improper filtering of data passed to and retrieved from NVRAMData entered into the 'Router Name' input field through the web portal is submitted to apply.cgi as the value to the 'machine_name' POST parameter. When the 'preinit' binary receives the SIGHUP signal it enters a code path that calls a function named 'set_host_domain_name' from its libshared.so shared object.
Overview
  • CVE ID
  • CVE-2018-3954
  • Assigner
  • talos-cna@cisco.com
  • Vulnerability Status
  • Undergoing Analysis
  • Published Version
  • 2018-10-17T02:29:01
  • Last Modified Date
  • 2022-04-19T18:15:28
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:linksys:e1200_firmware:2.0.09:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:linksys:e1200:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:linksys:e2500_firmware:3.0.04:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:linksys:e2500:-:*:*:*:*:*:*:* 0 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:H/UI:N/S:U/C:H/I:H/A:H
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • LOW
  • Privileges Required
  • HIGH
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • HIGH
  • Availability Impact
  • HIGH
  • Base Score
  • 7.2
  • Base Severity
  • HIGH
  • Exploitability Score
  • 1.2
  • Impact Score
  • 5.9
References
Reference URL Reference Tags
https://talosintelligence.com/vulnerability_reports/TALOS-2018-0625 Exploit Third Party Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2018-3954
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-3954
History
Created Old Value New Value Data Type Notes
2022-04-20 17:01:24 Added to TrackCVE
2022-12-03 13:32:33 2018-10-17T02:29Z 2018-10-17T02:29:01 CVE Published Date updated
2022-12-03 13:32:33 2022-04-19T18:15:28 CVE Modified Date updated
2022-12-03 13:32:33 Undergoing Analysis Vulnerability Status updated