Cisco IOS XE Software Arbitrary Code Execution (cisco-sa-ios-lua-rce-7VeJX4f)

High Nessus Plugin ID 141113

New! Vulnerability Priority Rating (VPR)

Tenable calculates a dynamic VPR for every vulnerability. VPR combines vulnerability information with threat intelligence and machine learning algorithms to predict which vulnerabilities are most likely to be exploited in attacks. Read more about what VPR is and how it's different from CVSS.

VPR Score: 5.9

Synopsis

The remote device is missing a vendor-supplied security patch

Description

According to its self-reported version, Cisco IOS XE Software is affected by an arbitrary code execution vulnerability in its Lua interpreter due to insufficient permission checks on Lua function calls. An authenticated, local attacker can exploit this to bypass authentication and execute arbitrary commands with root privileges.

Please see the included Cisco BIDs and Cisco Security Advisory for more information.

Solution

Upgrade to the relevant fixed version referenced in Cisco bug ID CSCvs58804

See Also

http://www.nessus.org/u?2d0a7b31

https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvs58804

Plugin Details

Severity: High

ID: 141113

File Name: cisco-sa-ios-lua-rce-7VeJX4f-iosxe.nasl

Version: 1.6

Type: local

Family: CISCO

Published: 2020/10/02

Updated: 2020/10/09

Dependencies: 67217

Risk Information

Risk Factor: High

VPR Score: 5.9

CVSS Score Source: CVE-2020-3423

CVSS v2.0

Base Score: 7.2

Temporal Score: 5.3

Vector: CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C

Temporal Vector: CVSS2#E:U/RL:OF/RC:C

CVSS v3.0

Base Score: 6.7

Temporal Score: 5.8

Vector: CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:cisco:ios_xe

Required KB Items: Host/Cisco/IOS-XE/Version, Host/Cisco/IOS-XE/Model

Exploit Ease: No known exploits are available

Patch Publication Date: 2020/09/24

Vulnerability Publication Date: 2020/09/24

Reference Information

CVE: CVE-2020-3423

CISCO-BUG-ID: CSCvs58804

CISCO-SA: cisco-sa-ios-lua-rce-7VeJX4f

IAVA: 2020-A-0439

CWE: 119