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Finding Lexmark printer assets

Printer manufacturer Lexmark recently published details on a vulnerability that affects over 100 of their printer models. Discovered by researcher Peter Geissler, this vulnerability can be leveraged to achieve unauthenticated remote code execution for an attacker. Firmware across devices in Lexmark’s small/medium business product line and also their enterprise product line have been found to contain this vulnerability.

What is the impact?

Lexmark assigned a CVSS score of 9.0 (“critical” severity rating) to this vulnerability (tracked as CVE-2023-23560), which allows server-side request forgery (SSRF) via the Web Services feature listening on port 65002 of affected printers. A successful attacker can exploit this vuln in a chain to gain code execution as root on vulnerable devices. Lexmark’s advisory states that, as of last week, they are not aware of anyone currently exploiting this vulnerability, but proof-of-concept exploit code is publicly available.

Are updates available? 

All firmware versions (release numbers 081.233 and prior) for affected printer models contain this vulnerability (CVE-2023-23560). Lexmark has made firmware updates available for each affected device, via release numbers 081.234 and later (see Lexmark’s advisory for specific release version details per affected printer).

If updating firmware isn’t a near-term option for admins/owners of affected printers, Lexmark does offer a straightforward mitigation:

Disabling the Web-Services service on the printer (TCP port 65002) blocks the ability to exploit this
vulnerability. The port can be blocked by following process: “Settings”->“Network/Ports”- > “TCP/IP”- > “TCP/IP Port Access” then uncheck “TCP 65002 (WSD Print Service )” and save.

How do I find potentially vulnerable Lexmark printer assets with runZero?

Please note that the following query relies on you having already performed a scan with our latest Explorer/scanner release (v3.4.22), which now includes the scanning of port 65002. Alternatively, you can perform a new scan using an older Explorer/scanner, just add port 65002 to the Included TCP ports list under the Advanced tab of your task settings prior to running the scan.

From the Asset Inventory, use the following pre-built query to locate Lexmark printer assets which may need remediation:

type:printer AND vendor:Lexmark AND tcp_port:65002

Query results can then be checked against Lexmark’s list of vulnerable models and firmware versions.

As always, any prebuilt queries are available from our Queries Library. Check out the library for other useful inventory queries.

Partnership Will Drive Increased Adoption of Portnox’s Cutting-Edge NAC Solution Purpose-Built for Large Distributed Organizations in the Region

LONDON — Portnox, which supplies network access control (NAC), visibility and device risk management to organizations of all sizes, today announced that it has partnered with Distology for the sole distribution and resell of its cloud-delivered NAC-as-a-Service solution in the United Kingdom and Ireland.

We chose to partner with Distology because of their successful history of IT security solution distribution in the UK and Irish markets, said Portnox CEO, Ofer Amitai. Were confident this collaboration will yield tremendous growth for both parties, as Portnox has a unique value proposition and Distology has the market enablement expertise to effectively evangelize our network security offering.

We have a long-established relationship with Portnox and it speaks volumes that the team have decided to choose Distology as their sole UK&I distributor. The technology Portnox brings to the market is incredibly exciting and complements our existing vendor stack effortlessly, said Stephen Rowlands, Head of Sales for Distology. Were especially looking forward to representing and promoting Portnox Clear to our growing partner base, as this brand-new cloud-based technology has potential to completely disrupt the market and we foresee masses of growth potential in this innovative product.

Portnox introduced its cloud-delivered NAC-as-a-Service solution to the UK & Irish markets less than two years go. As the first to bring NAC to the cloud, Portnox has quickly gained a foothold in the region, particularly among large distributed enterprises in the retail, construction and utilities industries.

The adoption of our NAC-as-a-Service product in the UK has been very strong to date, said VP of Products, Tomer Shemer. This is a testament to the fact that the UK is one of the markets leading the trend of cloud security adoption. We expect to see continued growth in the coming years in this area of Europe.

Portnox is set to exhibit at this week’s RSA 2020 Conference (booth #4234) in San Francisco, February 24-28. Additionally, Portnox (booth #G108) and Distology (booth #C40) will both be exhibiting at InfoSec Europe 2020, Europes largest event for information and cyber security, in London, June 2-4.

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.

About Portnox
Portnox provides simple-to-deploy, operate and maintain network access control, security and visibility solutions. Portnox software can be deployed on-premises, as a cloud-delivered service, or in hybrid mode. It is agentless and vendor-agnostic, allowing organizations to maximize their existing network and cybersecurity investments. Hundreds of enterprises around the world rely on Portnox for network visibility, cybersecurity policy enforcement and regulatory compliance. The company has been recognized for its innovations by Info Security Products Guide, Cyber Security Excellence Awards, IoT Innovator Awards, Computing Security Awards, Best of Interop ITX and Cyber Defense Magazine. Portnox has offices in the U.S., Europe and Asia. For information visit, and follow us on Twitter and LinkedIn.。

About Distology
Distology is a Market Enabler and offers true value for the distribution of disruptive IT Security solutions. The vendors we work with represent innovative and exciting technology that continues to excite and inspire their reseller network. Our ethos is based on trust, relationships, energy and drive and offers end to end support in the full sales cycle providing vendor quality technical and commercial resource.



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