CVE-2023-27351
Last modified
CVE-2023-27351 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. This vulnerability allows remote attackers to bypass authentication on affected installations of PaperCut NG 22.0.5 (Build 63914). Authentication is not required to exploit this vulnerability. CISA has confirmed active exploitation in the wild. EPSS estimates a 78.42% chance of exploitation in the next 30 days.
Description
This vulnerability allows remote attackers to bypass authentication on affected installations of PaperCut NG 22.0.5 (Build 63914). 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. Was ZDI-CAN-19226.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Exploitation Status
This vulnerability is listed in CISA’s Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild. Federal agencies must remediate by .
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Papercut | Papercut Mf | >= 15.0, < 20.1.7 |
| Papercut | Papercut Mf | >= 21.0.0, < 21.2.11 |
| Papercut | Papercut Mf | >= 22.0.0, < 22.0.9 |
| Papercut | Papercut Ng | >= 15.0, < 20.1.7 |
| Papercut | Papercut Ng | >= 21.0.0, < 21.2.11 |
| Papercut | Papercut Ng | >= 22.0.0, < 22.0.9 |
References
- https://www.papercut.com/kb/Main/PO-1216-and-PO-1219Vendor Advisory
- https://www.zerodayinitiative.com/advisories/ZDI-23-232/Third Party Advisory, VDB Entry
- https://www.papercut.com/kb/Main/PO-1216-and-PO-1219Vendor Advisory
- https://www.zerodayinitiative.com/advisories/ZDI-23-232/Third Party Advisory, VDB Entry
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-27351US Government Resource
Timeline
- Published
- Last Modified
- Status
- Analyzed
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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