CVE-2020-3423

CVSS V2 High 7.2 CVSS V3 Medium 6.7
Description
A vulnerability in the implementation of the Lua interpreter that is integrated in Cisco IOS XE Software could allow an authenticated, local attacker to execute arbitrary code with root privileges on the underlying Linux operating system (OS) of an affected device. The vulnerability is due to insufficient restrictions on Lua function calls within the context of user-supplied Lua scripts. An attacker with valid administrative credentials could exploit this vulnerability by submitting a malicious Lua script. When this file is processed, an exploitable buffer overflow condition could occur. A successful exploit could allow the attacker to execute arbitrary code with root privileges on the underlying Linux OS of the affected device.
Overview
  • CVE ID
  • CVE-2020-3423
  • Assigner
  • ykramarz@cisco.com
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2020-09-24T18:15:19
  • Last Modified Date
  • 2021-10-07T20:11:21
Weakness Enumerations
CWE URL
CWE-119 http://cwe.mitre.org/data/definitions/119.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
AND
cpe:2.3:o:cisco:ios_xe:-:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:cisco:1100_integrated_services_router:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:4221_integrated_services_router:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:4321_integrated_services_router:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:4331_integrated_services_router:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:4351_integrated_services_router:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:4431_integrated_services_router:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:4451-x_integrated_services_router:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:4461_integrated_services_router:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:asr_1001-hx:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:asr_1001-x:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:asr_1002-hx:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:asr_1002-x:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:asr_1004:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:asr_1006:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:asr_1006-x:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:asr_1009-x:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:asr_1013:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:cbr-8_converged_broadband_router:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:cloud_services_router_1000v:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:isr_1100:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:isr_1101:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:isr_1109:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:isr_1111x:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:isr_111x:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:isr_1120:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:isr_1160:-:*:*:*:*:*:*:* 0 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:L/AC:L/Au:N/C:C/I:C/A:C
  • Access Vector
  • LOCAL
  • Access Compatibility
  • LOW
  • Authentication
  • NONE
  • Confidentiality Impact
  • COMPLETE
  • Integrity Impact
  • COMPLETE
  • Availability Impact
  • COMPLETE
  • Base Score
  • 7.2
  • Severity
  • HIGH
  • Exploitability Score
  • 3.9
  • Impact Score
  • 10
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
  • Attack Vector
  • LOCAL
  • Attack Compatibility
  • LOW
  • Privileges Required
  • HIGH
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • HIGH
  • Availability Impact
  • HIGH
  • Base Score
  • 6.7
  • Base Severity
  • MEDIUM
  • Exploitability Score
  • 0.8
  • Impact Score
  • 5.9
References
Reference URL Reference Tags
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ios-lua-rce-7VeJX4f Vendor Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2020-3423
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-3423
History
Created Old Value New Value Data Type Notes
2022-05-10 06:52:05 Added to TrackCVE
2022-12-04 23:17:37 psirt@cisco.com ykramarz@cisco.com CVE Assigner updated
2022-12-04 23:17:37 2020-09-24T18:15Z 2020-09-24T18:15:19 CVE Published Date updated
2022-12-04 23:17:38 2021-10-07T20:11:21 CVE Modified Date updated
2022-12-04 23:17:38 Analyzed Vulnerability Status updated