Finding Cisco Small Business Switches
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.
Get runZero for free
Don’t have runZero and need help finding potentially vulnerable Cisco assets?Get started
June 3, 2023
Finding MOVEit File Transfer Services
Reports of active exploitation of a zero-day vulnerability in the MOVEit file transfer software are making the rounds this week. The vendor, Progress Software, has released an advisory and this issue has now been assigned CVE-2023-34362. Attackers are abusing a SQL injection …Read More
June 2, 2023
Finding Barracuda Email Security Gateways
Exploitation of Barracuda Email Security Gateway (ESG) appliances has made the news recently, including on-going investigation into the attacks. Leveraging a zero-day vulnerability as far back as October 2022, attackers compromised ESG targets to deploy malware that created …Read More
May 31, 2023
Finding Zyxel Network Devices
Last month, Zyxel disclosed a remote command execution vulnerability affecting a handful of their product families. This vulnerability has been assigned CVE-2023-28771, and with a CVSSv3 score of 9.8, this vulnerability is considered highly critical. Attackers who send a …Read More