Improper authentication in PaperCut NG
CVSS score
8.2
EPSS probability
%78.1
Risk score
12.8
Published
3 y ago
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
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Vulnerability description
DayBreach CVE AI Research
CVE-2023-27351 has vendor, distribution, patch and security-source records on file. We can compare them and prepare an explanation linked to the evidence.
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.
IMPACT: Affected Products and Software
Affected Products
The following products are affected by CVE-2023-27351 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.
RED HAT CSAF/VEX: Product Impact Check
SCORING: CVSS from Multiple Sources
CVSS Scores
The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.
| SCORE | VERSION | SEVERITY | VECTOR | SOURCE |
|---|---|---|---|---|
| 8.2 | CVSS V30 | HIGH | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N | NVD |
| 8.2 | CVSS V3_0 | HIGH | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N | CVE CNA |
| 7.5 | CVSS V31 | HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N | NVD |
Patch and Remediation Guide
Solution & Remediation Advisory
Resmî yama doğrulanamadı; geçici azaltım veya workaround mevcut.
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Public exploit and active exploitation status
Verified exploit intelligence
This CVE is marked as actively exploited in the CISA KEV catalogue, but no verified, downloadable public PoC or Metasploit module has been found yet. Evidence of active exploitation does not mean that public exploit code exists.
Weakness Classification and Attack Patterns (CWE & CAPEC)
CWE - Common Weakness Enumeration
While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2023-27351 is associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2023-27351 weaknesses.
Attack Vector and Accessibility
Official Sources and Advisories
Similar Vulnerabilities
PaperCut MF/NG: Authentication Bypass
PaperCut MF/NG: Unsafe Dynamic Class Loading in Database Connector
PaperCut NG/MF: Remote Code Execution via Scan2Fax
PaperCut NG/MF: Insufficient brute-force protection
PaperCut NG/MF: User enumeration via timing attack
PaperCut MF/NG: User permissions are not evaluated on report generation
Get this vulnerability through the API
Affected products, version ranges, exploitation status and patch information in a single request, with a free key.
curl -H "x-api-key: $DAYBREACH_API_KEY" \ "https://api.enginteksut.com.tr/api/v1/intel/cves/CVE-2023-27351"