FKIE_CVE-2023-27350

Vulnerability from fkie_nvd - Published: 2023-04-20 16:15 - Updated: 2025-10-27 17:05
Severity ?
9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
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 SetupCompleted class. The issue results from improper access control. An attacker can leverage this vulnerability to bypass authentication and execute arbitrary code in the context of SYSTEM. Was ZDI-CAN-18987.
References
zdi-disclosures@trendmicro.comhttp://packetstormsecurity.com/files/171982/PaperCut-MF-NG-Authentication-Bypass-Remote-Code-Execution.htmlThird Party Advisory, VDB Entry
zdi-disclosures@trendmicro.comhttp://packetstormsecurity.com/files/172022/PaperCut-NG-MG-22.0.4-Authentication-Bypass.htmlExploit, Third Party Advisory, VDB Entry
zdi-disclosures@trendmicro.comhttp://packetstormsecurity.com/files/172512/PaperCut-NG-MG-22.0.4-Remote-Code-Execution.htmlExploit, Third Party Advisory, VDB Entry
zdi-disclosures@trendmicro.comhttp://packetstormsecurity.com/files/172780/PaperCut-PaperCutNG-Authentication-Bypass.htmlExploit, Third Party Advisory, VDB Entry
zdi-disclosures@trendmicro.comhttps://news.sophos.com/en-us/2023/04/27/increased-exploitation-of-papercut-drawing-blood-around-the-internet/Third Party Advisory
zdi-disclosures@trendmicro.comhttps://www.papercut.com/kb/Main/PO-1216-and-PO-1219Vendor Advisory
zdi-disclosures@trendmicro.comhttps://www.zerodayinitiative.com/advisories/ZDI-23-233/Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108http://packetstormsecurity.com/files/171982/PaperCut-MF-NG-Authentication-Bypass-Remote-Code-Execution.htmlThird Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108http://packetstormsecurity.com/files/172022/PaperCut-NG-MG-22.0.4-Authentication-Bypass.htmlExploit, Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108http://packetstormsecurity.com/files/172512/PaperCut-NG-MG-22.0.4-Remote-Code-Execution.htmlExploit, Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108http://packetstormsecurity.com/files/172780/PaperCut-PaperCutNG-Authentication-Bypass.htmlExploit, Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108https://news.sophos.com/en-us/2023/04/27/increased-exploitation-of-papercut-drawing-blood-around-the-internet/Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.papercut.com/kb/Main/PO-1216-and-PO-1219Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.zerodayinitiative.com/advisories/ZDI-23-233/Third Party Advisory, VDB Entry
134c704f-9b21-4f2e-91b3-4a467353bcc0https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-27350US Government Resource
Impacted products
Vendor Product Version
papercut papercut_mf *
papercut papercut_mf *
papercut papercut_mf *
papercut papercut_ng *
papercut papercut_ng *
papercut papercut_ng *
To clipboard 

{
  "cisaActionDue": "2023-05-12",
  "cisaExploitAdd": "2023-04-21",
  "cisaRequiredAction": "Apply updates per vendor instructions.",
  "cisaVulnerabilityName": "PaperCut MF/NG Improper Access Control Vulnerability",
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:papercut:papercut_mf:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "E225189C-FF05-402B-A8F6-6BCC8D062B8C",
              "versionEndExcluding": "20.1.7",
              "versionStartIncluding": "8.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:papercut:papercut_mf:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "7D231C34-F58C-4CA1-B158-64778AC17991",
              "versionEndExcluding": "21.2.11",
              "versionStartIncluding": "21.0.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:papercut:papercut_mf:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "A326E88D-635E-4AC1-B5CE-455306FC9D55",
              "versionEndExcluding": "22.0.9",
              "versionStartIncluding": "22.0.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:papercut:papercut_ng:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "7F5D942B-C055-4221-8FD7-3F0F252931E4",
              "versionEndExcluding": "20.1.7",
              "versionStartIncluding": "8.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:papercut:papercut_ng:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "4DE19845-02F0-4BB9-BECB-49B34FACB55D",
              "versionEndExcluding": "21.2.11",
              "versionStartIncluding": "21.0.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:papercut:papercut_ng:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "C1852E7B-0B3F-4208-A26E-CB117E0C0CD8",
              "versionEndExcluding": "22.0.9",
              "versionStartIncluding": "22.0.0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "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 SetupCompleted class. The issue results from improper access control. An attacker can leverage this vulnerability to bypass authentication and execute arbitrary code in the context of SYSTEM. Was ZDI-CAN-18987."
    }
  ],
  "id": "CVE-2023-27350",
  "lastModified": "2025-10-27T17:05:26.883",
  "metrics": {
    "cvssMetricV30": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 9.8,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.0"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.9,
        "source": "zdi-disclosures@trendmicro.com",
        "type": "Secondary"
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 9.8,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2023-04-20T16:15:07.653",
  "references": [
    {
      "source": "zdi-disclosures@trendmicro.com",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "url": "http://packetstormsecurity.com/files/171982/PaperCut-MF-NG-Authentication-Bypass-Remote-Code-Execution.html"
    },
    {
      "source": "zdi-disclosures@trendmicro.com",
      "tags": [
        "Exploit",
        "Third Party Advisory",
        "VDB Entry"
      ],
      "url": "http://packetstormsecurity.com/files/172022/PaperCut-NG-MG-22.0.4-Authentication-Bypass.html"
    },
    {
      "source": "zdi-disclosures@trendmicro.com",
      "tags": [
        "Exploit",
        "Third Party Advisory",
        "VDB Entry"
      ],
      "url": "http://packetstormsecurity.com/files/172512/PaperCut-NG-MG-22.0.4-Remote-Code-Execution.html"
    },
    {
      "source": "zdi-disclosures@trendmicro.com",
      "tags": [
        "Exploit",
        "Third Party Advisory",
        "VDB Entry"
      ],
      "url": "http://packetstormsecurity.com/files/172780/PaperCut-PaperCutNG-Authentication-Bypass.html"
    },
    {
      "source": "zdi-disclosures@trendmicro.com",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://news.sophos.com/en-us/2023/04/27/increased-exploitation-of-papercut-drawing-blood-around-the-internet/"
    },
    {
      "source": "zdi-disclosures@trendmicro.com",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://www.papercut.com/kb/Main/PO-1216-and-PO-1219"
    },
    {
      "source": "zdi-disclosures@trendmicro.com",
      "tags": [
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        "VDB Entry"
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      "url": "https://www.zerodayinitiative.com/advisories/ZDI-23-233/"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
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      "url": "http://packetstormsecurity.com/files/171982/PaperCut-MF-NG-Authentication-Bypass-Remote-Code-Execution.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
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        "Third Party Advisory",
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      "url": "http://packetstormsecurity.com/files/172022/PaperCut-NG-MG-22.0.4-Authentication-Bypass.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
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        "Third Party Advisory",
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      ],
      "url": "http://packetstormsecurity.com/files/172512/PaperCut-NG-MG-22.0.4-Remote-Code-Execution.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Exploit",
        "Third Party Advisory",
        "VDB Entry"
      ],
      "url": "http://packetstormsecurity.com/files/172780/PaperCut-PaperCutNG-Authentication-Bypass.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://news.sophos.com/en-us/2023/04/27/increased-exploitation-of-papercut-drawing-blood-around-the-internet/"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://www.papercut.com/kb/Main/PO-1216-and-PO-1219"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "url": "https://www.zerodayinitiative.com/advisories/ZDI-23-233/"
    },
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "tags": [
        "US Government Resource"
      ],
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-27350"
    }
  ],
  "sourceIdentifier": "zdi-disclosures@trendmicro.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-284"
        }
      ],
      "source": "zdi-disclosures@trendmicro.com",
      "type": "Secondary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-Other"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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Detection rules are retrieved from Rulezet.