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Cisco Bug: CSCvs58804 - Cisco IOS XE Software Arbitrary Code Execution Vulnerability

Last Modified

Oct 14, 2020

Products (5)

  • Cisco cBR Series Converged Broadband Routers
  • Cisco 1000 Series Integrated Services Routers
  • Cisco 4000 Series Integrated Services Routers
  • Cisco ASR 1000 Series Aggregation Services Routers
  • Cisco Cloud Services Router 1000V Series

Known Affected Releases


Description (partial)

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.

Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

This advisory is available at the following link:

For information on fixed versions of software consult the Cisco IOS Software checker: 

See Vulnerable Products Section of the advisory for full details:
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Bug Details Include

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