![]() Questions or require additional information, please email for past versions which include the security fix for PO-480? License upgrades can be purchased via our online order system. (your existing license will work with PaperCut NG 22.0.12) You purchased PaperCut NG less than 3 months before the major upgrade was released You will need to purchase a license upgrade, in line with our long established upgrade policy, except in the following circumstances (where the upgrade is free): Upgrading from PaperCut NG (version 6 through to 21) to version 22.0.12 is a 'major' version upgrade. Information for PaperCut NG users (versions 6 through to 21) Please see the screenshot below for an example of a license with current Maintenance & Support. 16.0 was released on March 15, 2016), you can install the new version. If the date is after the x.0 release (eg. In the License Information section you will find a 'Software updates available until' date. You can check your Maintenance & Support status in the PaperCut web administration interface, under the About tab. It's always a good time to consider upgrading PaperCut.Įxisting PaperCut NG users may upgrade with an install-over-the-top procedure. break, end of term, etc.) or are undertaking server maintenance You have a period of low network activity (e.g. You have a use for any of the new features. You may continue to use your existing PaperCut installation. Because the two editions share an identical code base, all data is compatible. Huntress and Horizon3 also provide indicators PaperCut users can check to determine if they have been exposed to exploits.This is not a mandatory upgrade. Its very straightforward to convert an existing PaperCut NG installation to PaperCut MF without any loss of data or settings. PaperCut and Huntress also provide workarounds for organizations that aren’t able to update right away. Additional sleuthing might be able to find more still.Īny organization using PaperCut should ensure it's using PaperCut MF and NG versions 20.1.7, 21.2.11, and 22.0.9. As noted earlier, close to 1,700 servers are easy to find exposed to the Internet. Assuming the numbers are representative of PaperCut’s larger install base, the Huntress data suggests that thousands of servers remain under threat of being exploited. Of the three macOS machines it monitored, only one was patched. Of those, roughly 900 remained unpatched. On Friday, Huntress reported there were roughly 1,000 Windows machines with PaperCut installed in the customer environments it protects. Similar to the PoC exploit described by Huntress, it uses the authentication bypass vulnerability to tamper with the built-in scripting functionality and execute code. On Monday, researchers with security firm Horizon3 published their analysis of the vulnerabilities, along with proof-of-concept exploit code for the more severe one. “As intended, the scripts contain only functions which serve as hooks for future execution, however the global scope is executed immediately upon saving, and therefore a simple edit of a printer script can be leveraged to achieve Remote Code Execution,” Huntress explained. By disabling security sandboxing, the malicious script can gain direct access to the Java runtime and, from there, execute code on the main server. The exploit works by adding malicious entries to one of the template printer scripts that are present by default. PaperCut CVE-2023-27350 proof-of-concept exploitation. Previously Clop used Truebot in in-the-wild attacks that exploited a critical vulnerability in software known as GoAnywhere. ![]() Truebot is linked to a threat group known as Silence, which has ties with the ransomware group known as Clop. Evidence then showed that the threat actor used the remote management software to install malware known as Truebot. Two days after PaperCut revealed the attacks, security firm Huntress reported that it found threat actors exploiting CVE-2023-27350 to install two pieces of remote management software-one known as Atera and the other Syncro-on unpatched servers. A related vulnerability, tracked as CVE-2023–27351 with a severity rating of 8.2, allows unauthenticated attackers to extract usernames, full names, email addresses, and other potentially sensitive data from unpatched servers. It allows an unauthenticated attacker to remotely execute malicious code without needing to log in or provide a password. The vulnerability, tracked as CVE-2023–27350, carries a severity rating of 9.8 out of a possible 10. Last Wednesday, PaperCut warned that a critical vulnerability it patched in the software in March was under active attack against machines that had yet to install the March update. World map showing locations of PaperCut installations.
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