{"id":66001,"date":"2023-04-24T12:03:11","date_gmt":"2023-04-24T04:03:11","guid":{"rendered":"https:\/\/version-2.com.sg\/?p=65871"},"modified":"2024-09-13T16:31:20","modified_gmt":"2024-09-13T08:31:20","slug":"finding-papercut-mf-and-ng-servers","status":"publish","type":"post","link":"https:\/\/version-2.com\/zh\/2023\/04\/finding-papercut-mf-and-ng-servers\/","title":{"rendered":"Finding PaperCut MF and NG servers"},"content":{"rendered":"\t\t
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PaperCut recently revealed<\/a> that two products in its popular line of print server software contain severe vulnerabilities currently being exploited in the wild. Reported via the Trend Micro Zero Day Initiative, these vulnerabilities can be exploited by unauthenticated attackers to achieve remote code execution as the SYSTEM user (CVE-2023-27350<\/a>\/ZDI-CAN-18987<\/a>) or information disclosure, including user information and password hashes (CVE-2023-27351<\/a>\/ZDI-CAN-19226<\/a>).<\/p>

What is the impact? <\/i><\/h2>

With a CVSS score of 9.8 (\u201ccritical\u201d), CVE-2023-27350<\/a>\/ZDI-CAN-18987<\/a> exists in the SetupCompleted class and can be leveraged for unauthenticated remote code execution due to improper access control. The Application Server and Site Server components of PaperCut MF and NG product versions 8.0 and later contain this flaw.<\/p>

CVE-2023-27351<\/a>\/ZDI-CAN-19226<\/a> has been assigned a CVSS score of 8.2 (\u201chigh\u201d) and exists in the SecurityRequestFilter class as a flaw in the authentication algorithm, allowing for unauthenticated information disclosure. The Application Server component of PaperCut MF and NG product versions 15.0 and later contain this flaw.<\/p>

PaperCut\u2019s website claims over 130 million users of their products across almost 90,000 organizations in almost 200 countries, including government, commercial, and educational users. Coupled with the substantial list of affected product versions and exploitation of these vulnerabilities already observed happening in the wild<\/a>, the impact could be quite broad. Trend Micro will defer disclosing more details<\/a> on these vulnerabilities until next month in order to give PaperCut customers time to patch.<\/p>

While a definitive indicator of compromise doesn\u2019t exist in detecting exploitation of these vulnerabilities on a target, PaperCut does offer some clues<\/a> one can look for.<\/p>

Are updates available? <\/i><\/h2>

Last month, PaperCut released patched versions 20.1.7, 21.2.11, and 22.0.9<\/a> which fix these vulnerabilities. Older unsupported\/end-of-life versions will not be receiving a patched update<\/a>.<\/p>

For admins who cannot patch immediately, PaperCut does provide a mitigation for CVE-2023-27351\/ZDI-CAN-19226<\/a>, but none is available currently for CVE-2023-27350\/ZDI-CAN-18987.<\/p>

How do I find potentially vulnerable PaperCut services with runZero? <\/i><\/h2>

From the Services inventory<\/a>, use the following prebuilt query<\/a> to locate all PaperCut MF and NG servers in your network:<\/p>

_asset.protocol:http and protocol:http and (http.body:\"PaperCut MF is a print management system\" OR last.http.body:\"PaperCut MF is a print management system\" OR http.body:\"PaperCut NG is a print management system\" OR last.http.body:\"PaperCut NG is a print management system\")\n<\/code><\/pre>
<\/p>
As always, any prebuilt queries are available from your runZero console<\/a>. Check out the documentation for other useful inventory queries<\/a>.<\/p><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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About Version 2 Digital<\/h3>
Version 2 Digital is one of the most dynamic IT companies in Asia. The company distributes a wide range of IT products across various areas including cyber security, cloud, data protection, end points, infrastructures, system monitoring, storage, networking, business productivity and communication products.\n

\nThrough 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, different vertical industries, public utilities, Government, a vast number of successful SMEs, and consumers in various Asian cities.<\/p><\/div><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t\n\t\t
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About runZero<\/strong>
runZero, a network discovery and asset inventory solution, was founded in 2018 by HD Moore, the creator of Metasploit. HD envisioned a modern active discovery solution that could find and identify everything on a network\u2013without credentials. As a security researcher and penetration tester, he often employed benign ways to get information leaks and piece them together to build device profiles. Eventually, this work led him to leverage applied research and the discovery techniques developed for security and penetration testing to create runZero.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"
PaperCut recently revealed that two products in its pop […]<\/p>\n","protected":false},"author":148637484,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_wpcom_ai_launchpad_first_post":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_post_was_ever_published":true},"categories":[976,1075,61],"tags":[977,1076],"class_list":["post-66001","post","type-post","status-publish","format-standard","hentry","category-runzero","category-year2023","category-press-release","tag-runzero","tag-1076"],"acf":[],"yoast_head":"\nFinding PaperCut MF and NG servers - Version 2<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.runzero.com\/blog\/finding-papercut-servers\/\" \/>\n<meta property=\"og:locale\" content=\"zh_HK\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Finding PaperCut MF and NG servers - 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