Cisco recently disclosed several highly critical vulnerabilities that affect some of their Ethernet switches designed for small businesses. With a CVSSv3 score of 9.8, these vulnerabilities (assigned CVE-2023-20024, CVE-2023-20156, and CVE-2023-20157) are due to various faults in the handling of input to the web-based management interface of these switches. Successfully exploiting one of these vulnerabilities would allow an attacker to create a denial-of-service condition or execute arbitrary code with root privileges.
Along with this disclosure, Cisco announced updated software to address these issues. However, several of the affected models are past their End-of-Life (EOL) dates and no software updates have been released for them. Users are advised to update the software on affected systems as soon as possible and if updates for their devices are available.
Finding affected devices using runZero
You can locate Cisco switches in your organization by visiting the Asset Inventory and using the following pre-built query:
hw:"Cisco" and type:"switch"
You can also limit your search to only the affected product families, using the following pre-built query:
hw:"Cisco" and type:"switch" and (snmp.modelNames:"CBS" or snmp.modelNames:"SF2" or snmp.modelNames:"SG2" or snmp.modelNames:"SF3" or snmp.modelNames:"SG3" or snmp.modelNames:"SF5" or snmp.modelNames:"SG5")
As always, any prebuilt queries we create are available from our Queries Library. Check out the library for other useful inventory queries.
About Version 2
Version 2 is one of the most dynamic IT companies in Asia. The company develops and distributes IT products for Internet and IP-based networks, including communication systems, Internet software, security, network, and media products. Through an extensive network of channels, point of sales, resellers, and partnership companies, Version 2 offers quality products and services which are highly acclaimed in the market. Its customers cover a wide spectrum which include Global 1000 enterprises, regional listed companies, public utilities, Government, a vast number of successful SMEs, and consumers in various Asian cities.
runZero, a network discovery and asset inventory solution, was founded in 2018 by HD Moore, the creator of Metasploit. HD envisioned a modern active discovery solution that could find and identify everything on a network–without credentials. As a security researcher and penetration tester, he often employed benign ways to get information leaks and piece them together to build device profiles. Eventually, this work led him to leverage applied research and the discovery techniques developed for security and penetration testing to create runZero.