Security Experts:

Connect with us

Hi, what are you looking for?

SecurityWeekSecurityWeek

IoT Security

Critical Vulnerability Impacts Over 120 Lexmark Printers

Lexmark warns of a remote code execution (RCE) vulnerability impacting over 120 printer models, for which PoC code has been published.

Printer and imaging products manufacturer Lexmark this week published a security advisory to warn users of a critical vulnerability impacting over 120 printer models.

The issue, tracked as CVE-2023-23560 (CVSS score of 9.0), is described as a server-side request forgery (SSRF) flaw in the Web Services feature of newer Lexmark devices, which could be exploited to execute arbitrary code.

“Successful exploitation of this vulnerability can lead to an attacker being able to remotely execute arbitrary code on a device,” Lexmark warns in an advisory (PDF).

The manufacturer lists roughly 125 device models that are impacted by the security defect, including B, C, CS, CX, M, MB, MC, MS, MX, XC, and XM series printers.

The company has announced firmware updates that resolve the vulnerability on all impacted devices and encourages users to find update instructions on its support website.

Additionally, Lexmark says that exploitation of CVE-2023-23560 can be blocked by disabling the Web Services feature on the vulnerable printers (TCP port 65002).

To block TCP port 65002, users would have to go to Settings > Network/Ports > TCP/IP > TCP/IP Port Access, uncheck TCP 65002 ( WSD Print Service ), and then click Save.

Lexmark also warns that, while it is not aware of any malicious attacks targeting the vulnerability, proof-of-concept (PoC) code exploiting it has been made public.

Given that it is not unusual for threat actors to target unpatched printers and other Internet of Things (IoT) devices, users are advised to apply the available patches as soon as possible.

Related: Hundreds of Thousands of Konica Printers Vulnerable to Hacking via ​​Physical Access

Related: Serious Vulnerability Exploited at Hacking Contest Impacts Over 200 HP Printers

Related: Xerox Quietly Patched Device-Bricking Flaw Affecting Some Printers

Written By

Ionut Arghire is an international correspondent for SecurityWeek.

Click to comment

Daily Briefing Newsletter

Subscribe to the SecurityWeek Email Briefing to stay informed on the latest threats, trends, and technology, along with insightful columns from industry experts.

Join this webinar to learn best practices that organizations can use to improve both their resilience to new threats and their response times to incidents.

Register

Join this live webinar as we explore the potential security threats that can arise when third parties are granted access to a sensitive data or systems.

Register

Expert Insights

Related Content

Vulnerabilities

Less than a week after announcing that it would suspended service indefinitely due to a conflict with an (at the time) unnamed security researcher...

Application Security

Drupal released updates that resolve four vulnerabilities in Drupal core and three plugins.

Risk Management

The supply chain threat is directly linked to attack surface management, but the supply chain must be known and understood before it can be...

Vulnerabilities

Apple has released updates for macOS, iOS and Safari and they all include a WebKit patch for a zero-day vulnerability tracked as CVE-2023-23529.

Cloud Security

VMware vRealize Log Insight vulnerability allows an unauthenticated attacker to take full control of a target system.

Application Security

A CSRF vulnerability in the source control management (SCM) service Kudu could be exploited to achieve remote code execution in multiple Azure services.

Vulnerabilities

GoAnywhere MFT users warned about a zero-day remote code injection exploit that can be targeted directly from the internet

Vulnerabilities

Apple has updated its security advisories to add new iOS and macOS vulnerabilities, including ones belonging to a new class of bugs.