![]() Penetration testing company Horizon3.ai, on April 24, 2023, released more technical details and a proof-of-concept (PoC) exploit code for the critical PaperCut flaw that could be used to achieve remote code execution. Horizon3.ai Releases Proof-of-Concept (PoC) Exploit Users are recommended to upgrade to the fixed versions of PaperCut MF and NG (20.1.7, 21.2.11, and 22.0.9) as soon as possible, regardless of whether the server is "available to external or internal connections," to mitigate potential risks.Ĭustomers who are unable to upgrade to a security patch are advised to lock down network access to the servers by blocking all inbound traffic from external IPs and limiting IP addresses to only those belonging to verified site servers. "Potentially, the access gained through PaperCut exploitation could be used as a foothold leading to follow-on movement within the victim network, and ultimately ransomware deployment." Join our webinar and learn how to stop ransomware attacks in their tracks with real-time MFA and service account protection. PaperCut has published advice on what to do if you suspect one of your servers has been compromised, and Trend Micro’s Zero Day Initiative has released rules and filters that can help protect against exploitation of this vulnerability.Learn to Stop Ransomware with Real-Time Protection In any case, admins are advised to upgrade to one of the versions with fixes for both: PaperCut MF and NG versions 20.1.7, 21.2.11 or 22.0.9 – especially because a PoC for CVE-2023-27350 has been publicly released, so more threat actors could start using it. Trend Micro says the LockBit affiliate is exploiting just the former. Microsoft says that the Clop affiliate is exploiting CVE-2023-27350 (a RCE flaw) and CVE-2023-27351 (an information disclosure flaw). Urgent action is neededĬlop and LockBit ransomware-as-a-service (RaaS) affiliates are among the five most active ransomware threat actors. The attackers run a PowerShell script via the exploited app and download the LockBit ransomware from a temporary hosting site. Trend Micro researchers documented a Lockbit campaign that starts with the exploitation of CVE-2023-27350. More threat actors could follow suit,” they warned. “We’re monitoring other attacks also exploiting these vulnerabilities, including intrusions leading to Lockbit deployment. Click on the Help section to find your Support ID. It allows users to print from any computer on the network to any. ![]() For example: Sign in with an admin account. PaperCut MF is the print and copier management solution for Multi-Function Devices (MFDs). Open up a web browser and navigate to the admin login page of your PaperCut server. It makes a complicated task as straight forward and painless as possible. affecting all PaperCut MF or NG versions from 8. It rates as the best and simplest print management software on the market today. They move laterally within targets’ network by using Windows Management Instrumentation (WMI), and exfiltrate files via the MegaSync file-sharing app. Licensing for PaperCut NG is super easy It’s a one-time fee, based on the number of users with no limit on the number of servers, workstations, or number of printers. PaperCut NG & MF customers have a Support ID as well as a Customer Reference Number. The best tech tutorials and in-depth reviews Try a single issue or save on a subscription. The attackers are attempting to steal LSASS credentials, deliver Truebot downloader malware and a Cobalt Strike Beacon implant. Microsoft has said its research found the Clop and LockBit ransomware operators are behind the latest data breach incidents related to the PaperCut MF/NG vulnerabilities. The threat actor incorporated the PaperCut exploits into their attacks as early as April 13.” “Lace Tempest (DEV-0950) is a Clop ransomware affiliate that has been observed using GoAnywhere exploits and Raspberry Robin infection hand-offs in past ransomware campaigns. “Microsoft is attributing the recently reported attacks exploiting the CVE-2023-27350 and CVE-2023-27351 vulnerabilities in print management software PaperCut to deliver Clop ransomware to the threat actor tracked as Lace Tempest (overlaps with FIN11 and TA505),” Microsoft shared. Run a mix of Windows and/or Linux print servers and support clients ranging from Windows, Mac, Linux, Unix and. The way this software has been conceptualized really is amazing because it is so detailed for a software that is made to. Both cross-platform and multi-platform support. I think the most amazing thing about PaperCut for me is that it estimates and discourages your paper use constantly, which I really appreciate. Clop and LockBit ransomware affiliates are behind the recent attacks exploiting vulnerabilities in PaperCut application servers, according to Microsoft and Trend Micro researchers. PaperCut is an exceptionally nice software that allows you to print for a price.
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