6.7
MEDIUM
CVE-2020-3423
Cisco IOS XE Lua Interpreter Arbitrary Code Execution Vulnerability
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.

INFO

Published Date :

Sept. 24, 2020, 6:15 p.m.

Last Modified :

Nov. 21, 2024, 5:31 a.m.

Source :

[email protected]

Remotely Exploitable :

No

Impact Score :

5.9

Exploitability Score :

0.8
Affected Products

The following products are affected by CVE-2020-3423 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Cisco ios_xe
2 Cisco ios_xe
3 Cisco asr_1002-x
4 Cisco asr_1004
5 Cisco asr_1006
6 Cisco asr_1013
7 Cisco 1100_integrated_services_router
8 Cisco 1101_integrated_services_router
9 Cisco 1109_integrated_services_router
10 Cisco 111x_integrated_services_router
11 Cisco 1120_integrated_services_router
12 Cisco 1160_integrated_services_router
13 Cisco 4221_integrated_services_router
14 Cisco asr_1001-hx
15 Cisco asr_1001-x
16 Cisco asr_1002-hx
17 Cisco asr_1006-x
18 Cisco asr_1009-x
19 Cisco 1111x_integrated_services_router
20 Cisco 4321_integrated_services_router
21 Cisco 4331_integrated_services_router
22 Cisco 4351_integrated_services_router
23 Cisco 4431_integrated_services_router
24 Cisco 4451-x_integrated_services_router
25 Cisco 4461_integrated_services_router
26 Cisco cloud_services_router_1000v
27 Cisco cbr-8_converged_broadband_router
: Total Affected Vendor : 1 | Products : 27
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2020-3423.

URL Resource
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ios-lua-rce-7VeJX4f Vendor Advisory
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ios-lua-rce-7VeJX4f Vendor Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2020-3423 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2020-3423 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ios-lua-rce-7VeJX4f
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    Nov. 07, 2023

    Action Type Old Value New Value
    Removed CVSS V3 Cisco Systems, Inc. AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:H/A:N
    Added CVSS V3.1 Cisco Systems, Inc. AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:H/A:N
  • CPE Deprecation Remap by [email protected]

    May. 22, 2023

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:h:cisco:isr_1109:-:*:*:*:*:*:*:* OR *cpe:2.3:h:cisco:1109_integrated_services_router:-:*:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    May. 22, 2023

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:h:cisco:isr_111x:-:*:*:*:*:*:*:* OR *cpe:2.3:h:cisco:111x_integrated_services_router:-:*:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    May. 22, 2023

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:h:cisco:isr_1111x:-:*:*:*:*:*:*:* OR *cpe:2.3:h:cisco:1111x_integrated_services_router:-:*:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    May. 22, 2023

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:h:cisco:isr_1120:-:*:*:*:*:*:*:* OR *cpe:2.3:h:cisco:1120_integrated_services_router:-:*:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    May. 22, 2023

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:h:cisco:isr_1160:-:*:*:*:*:*:*:* OR *cpe:2.3:h:cisco:1160_integrated_services_router:-:*:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    May. 22, 2023

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:h:cisco:isr_1101:-:*:*:*:*:*:*:* OR *cpe:2.3:h:cisco:1101_integrated_services_router:-:*:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    May. 22, 2023

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:h:cisco:isr_1100:-:*:*:*:*:*:*:* OR *cpe:2.3:h:cisco:1100_integrated_services_router:-:*:*:*:*:*:*:*
  • Reanalysis by [email protected]

    Oct. 07, 2021

    Action Type Old Value New Value
    Changed CPE Configuration AND OR *cpe:2.3:o:cisco:ios_xe:-:*:*:*:*:*:*:* OR cpe:2.3:h:cisco:1100_integrated_services_router:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:4221_integrated_services_router:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:4321_integrated_services_router:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:4331_integrated_services_router:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:4351_integrated_services_router:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:4431_integrated_services_router:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:4451-x_integrated_services_router:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:4461_integrated_services_router:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:asr_1001-hx:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:asr_1001-x:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:asr_1002-hx:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:asr_1002-x:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:asr_1004:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:asr_1006:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:asr_1006-x_router:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:asr_1009-x_router:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:asr_1013:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:cbr-8_converged_broadband_router:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:cloud_services_router_1000v:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:isr_1100_router:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:isr_1101_router:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:isr_1109_router:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:isr_1111x_router:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:isr_111x_router:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:isr_1120_router:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:isr_1160_router:-:*:*:*:*:*:*:* AND OR *cpe:2.3:o:cisco:ios_xe:-:*:*:*:*:*:*:* OR cpe:2.3:h:cisco:1100_integrated_services_router:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:4221_integrated_services_router:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:4321_integrated_services_router:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:4331_integrated_services_router:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:4351_integrated_services_router:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:4431_integrated_services_router:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:4451-x_integrated_services_router:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:4461_integrated_services_router:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:asr_1001-hx:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:asr_1001-x:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:asr_1002-hx:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:asr_1002-x:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:asr_1004:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:asr_1006:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:asr_1006-x:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:asr_1009-x:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:asr_1013:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:cbr-8_converged_broadband_router:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:cloud_services_router_1000v:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:isr_1100:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:isr_1101:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:isr_1109:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:isr_1111x:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:isr_111x:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:isr_1120:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:isr_1160:-:*:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    Oct. 05, 2021

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:h:cisco:asr_1001-hx_router:-:*:*:*:*:*:*:* OR *cpe:2.3:h:cisco:asr_1001-hx:-:*:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    Oct. 05, 2021

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:h:cisco:asr_1004_router:-:*:*:*:*:*:*:* OR *cpe:2.3:h:cisco:asr_1004:-:*:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    Oct. 05, 2021

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:h:cisco:asr_1006_router:-:*:*:*:*:*:*:* OR *cpe:2.3:h:cisco:asr_1006:-:*:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    Oct. 05, 2021

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:h:cisco:asr_1002-x_router:-:*:*:*:*:*:*:* OR *cpe:2.3:h:cisco:asr_1002-x:-:*:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    Oct. 05, 2021

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:h:cisco:asr_1013_router:-:*:*:*:*:*:*:* OR *cpe:2.3:h:cisco:asr_1013:-:*:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    Oct. 05, 2021

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:h:cisco:asr_1001-x_router:-:*:*:*:*:*:*:* OR *cpe:2.3:h:cisco:asr_1001-x:-:*:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    Oct. 05, 2021

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:h:cisco:asr_1002-hx_router:-:*:*:*:*:*:*:* OR *cpe:2.3:h:cisco:asr_1002-hx:-:*:*:*:*:*:*:*
  • Reanalysis by [email protected]

    Aug. 06, 2021

    Action Type Old Value New Value
  • Initial Analysis by [email protected]

    Oct. 08, 2020

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:L/AC:L/Au:N/C:C/I:C/A:C)
    Added CVSS V3.1 NIST AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
    Changed Reference Type https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ios-lua-rce-7VeJX4f No Types Assigned https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ios-lua-rce-7VeJX4f Vendor Advisory
    Added CWE NIST CWE-119
    Added CPE Configuration AND OR *cpe:2.3:o:cisco:ios_xe:-:*:*:*:*:*:*:* OR cpe:2.3:h:cisco:1100_integrated_services_router:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:4221_integrated_services_router:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:4321_integrated_services_router:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:4331_integrated_services_router:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:4351_integrated_services_router:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:4431_integrated_services_router:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:4451-x_integrated_services_router:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:4461_integrated_services_router:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:asr_1001-hx_router:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:asr_1001-x_router:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:asr_1002-hx_router:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:asr_1002-x_router:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:asr_1004_router:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:asr_1006-x_router:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:asr_1006_router:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:asr_1009-x_router:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:asr_1013_router:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:cbr-8_converged_broadband_router:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:cloud_services_router_1000v:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:isr_1100_router:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:isr_1101_router:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:isr_1109_router:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:isr_1111x_router:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:isr_111x_router:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:isr_1120_router:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:isr_1160_router:-:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Sep. 24, 2020

    Action Type Old Value New Value
    Changed 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. 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.
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.04 }} 0.00%

score

0.05635

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
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Availability
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