CVE-2020-12521

CVSS V2 Medium 6.1 CVSS V3 Medium 6.5
Description
On Phoenix Contact PLCnext Control Devices versions before 2021.0 LTS a specially crafted LLDP packet may lead to a high system load in the PROFINET stack. An attacker can cause failure of system services or a complete reboot.
Overview
  • CVE ID
  • CVE-2020-12521
  • Assigner
  • info@cert.vde.com
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2020-12-17T23:15:13
  • Last Modified Date
  • 2020-12-21T18:28:04
Weakness Enumerations
CWE URL
CWE-20 http://cwe.mitre.org/data/definitions/20.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
AND
cpe:2.3:o:phoenixcontact:plcnext_firmware:*:*:*:*:long_term_support:*:*:* 1 OR 2021.0
cpe:2.3:h:phoenixcontact:axc_f_1152:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:phoenixcontact:plcnext_firmware:*:*:*:*:long_term_support:*:*:* 1 OR 2021.0
cpe:2.3:h:phoenixcontact:axc_f_2152:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:phoenixcontact:plcnext_firmware:*:*:*:*:long_term_support:*:*:* 1 OR 2021.0
cpe:2.3:h:phoenixcontact:axc_f_3152:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:phoenixcontact:plcnext_firmware:*:*:*:*:long_term_support:*:*:* 1 OR 2021.0
cpe:2.3:h:phoenixcontact:rfc_4072s:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:phoenixcontact:plcnext_firmware:*:*:*:*:long_term_support:*:*:* 1 OR 2021.0
cpe:2.3:h:phoenixcontact:axc_f_2152_starterkit:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:phoenixcontact:plcnext_firmware:*:*:*:*:long_term_support:*:*:* 1 OR 2021.0
cpe:2.3:h:phoenixcontact:plcnext_technology_starterkit:-:*:*:*:*:*:*:* 0 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:A/AC:L/Au:N/C:N/I:N/A:C
  • Access Vector
  • ADJACENT_NETWORK
  • Access Compatibility
  • LOW
  • Authentication
  • NONE
  • Confidentiality Impact
  • NONE
  • Integrity Impact
  • NONE
  • Availability Impact
  • COMPLETE
  • Base Score
  • 6.1
  • Severity
  • MEDIUM
  • Exploitability Score
  • 6.5
  • Impact Score
  • 6.9
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  • Attack Vector
  • ADJACENT_NETWORK
  • Attack Compatibility
  • LOW
  • Privileges Required
  • NONE
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • NONE
  • Availability Impact
  • HIGH
  • Base Score
  • 6.5
  • Base Severity
  • MEDIUM
  • Exploitability Score
  • 2.8
  • Impact Score
  • 3.6
References
Reference URL Reference Tags
https://cert.vde.com/en-us/advisories/vde-2020-049 Third Party Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2020-12521
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-12521
History
Created Old Value New Value Data Type Notes
2022-05-10 07:29:46 Added to TrackCVE
2022-12-05 18:30:23 2020-12-17T23:15Z 2020-12-17T23:15:13 CVE Published Date updated
2022-12-05 18:30:23 2020-12-21T18:28:04 CVE Modified Date updated
2022-12-05 18:30:23 Analyzed Vulnerability Status updated