Advisory Details

March 14th, 2023

PaperCut NG SecurityRequestFilter Authentication Bypass Vulnerability

CVE ID	CVE-2023-27351
CVSS SCORE	8.2, AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
AFFECTED VENDORS	PaperCut
AFFECTED PRODUCTS	NG
VULNERABILITY DETAILS	This vulnerability allows remote attackers to bypass authentication on affected installations of PaperCut NG. Authentication is not required to exploit this vulnerability. The specific flaw exists within the SecurityRequestFilter class. The issue results from improper implementation of the authentication algorithm. An attacker can leverage this vulnerability to bypass authentication on the system.
ADDITIONAL DETAILS	PaperCut has issued an update to correct this vulnerability. More details can be found at: https://www.papercut.com/kb/Main/PO-1216-and-PO-1219
DISCLOSURE TIMELINE	2023-01-10 - Vulnerability reported to vendor 2023-03-14 - Coordinated public release of advisory 2023-04-19 - Advisory Updated
CREDIT	Piotr Bazydlo (@chudypb) of Trend Micro Zero Day Initiative

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