Finding Cisco devices running IOS XE
Cisco recently disclosed a command execution vulnerability that affects some versions of IOS XE SD-WAN software running on Cisco routing devices and virtual instances. With a CVSSv3 score of 7.8, this vulnerability (assigned CVE-2021-1529) is due to inadequate input validation in the command line interface (CLI), allowing an authenticated attacker who provides crafted CLI input to execute commands with root privileges. This vulnerability follows a handful of SD-WAN vulns Cisco has addressed this year.
Along with the disclosure, Cisco announced updated software to address this vulnerability. However, it is only for universal IOS XE releases and not standalone Cisco IOS XE SD-WAN releases. And with no mitigations or workarounds offered, folks should update affected devices and virtual instances as soon as possible.
How to find Cisco devices running IOS XE with Rumble
From the Services Inventory, use the following pre-built query to locate Cisco IOS XE instances exposing a CLI in your network:
_asset.protocol:snmp AND protocol:snmp AND snmp.sysDesc:"IOS-XE" AND (_asset.protocol:telnet or _asset.protocol:ssh)
As always, any prebuilt queries we create are available from our Queries Library. Check out the library for other useful inventory queries.
Get runZero for free
Find Cisco devices/instances running IOS XE on your network with runZero.Get started
February 15, 2023
Finding OpenSSH servers
The OpenSSH team surfaced a security issue earlier this month that specifically affects OpenSSH server version 9.1p1 (a.k.a. version 9.1). This version contains a memory double-free vulnerability (tracked as CVE-2023-25136) that can be reached pre-authentication by a remote …Read More
February 8, 2023
Finding VMware ESXi assets
This Rapid Response post covers ESXiArgs, a new strain of ransomware that is targeting VMware ESXi servers. Learn how you can find potentially affected servers on your network.
February 3, 2023
Finding Lexmark printer assets
Printer manufacturer Lexmark recently published details on a vulnerability that affects over 100 of their printer models. Learn how runZero can help you find potentially affected assets.