CVE-2023-26482

Published Mar 30, 2023

Last updated 2 years ago

Overview

Description: Nextcloud server is an open source home cloud implementation. In affected versions a missing scope validation allowed users to create workflows which are designed to be only available for administrators. Some workflows are designed to be RCE by invoking defined scripts, in order to generate PDFs, invoking webhooks or running scripts on the server. Due to this combination depending on the available apps the issue can result in a RCE at the end. It is recommended that the Nextcloud Server is upgraded to 24.0.10 or 25.0.4. Users unable to upgrade should disable app `workflow_scripts` and `workflow_pdf_converter` as a mitigation.
Source: security-advisories@github.com
NVD status: Analyzed

Hype score: Not currently trending

Risk scores

CVSS 3.1

Type: Primary
Base score: 8.8
Impact score: 5.9
Exploitability score: 2.8
Vector string: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Severity: HIGH

Weaknesses

nvd@nist.gov: NVD-CWE-noinfo
security-advisories@github.com: CWE-78

Configurations

[
  {
    "nodes": [
      {
        "negate": false,
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:enterprise:*:*:*",
            "vulnerable": true,
            "matchCriteriaId": "F96F0D08-EE3D-4796-A6AC-B63E53770F60",
            "versionEndExcluding": "20.0.14.12",
            "versionStartIncluding": "18.0.0"
          },
          {
            "criteria": "cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:enterprise:*:*:*",
            "vulnerable": true,
            "matchCriteriaId": "BFCBAD36-04D2-47EC-836E-35EFC1D6E060",
            "versionEndExcluding": "21.0.9.10",
            "versionStartIncluding": "21.0.0"
          },
          {
            "criteria": "cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:enterprise:*:*:*",
            "vulnerable": true,
            "matchCriteriaId": "C5886100-3157-4377-8681-381720CFDA8E",
            "versionEndExcluding": "22.2.10.10",
            "versionStartIncluding": "22.0.0"
          },
          {
            "criteria": "cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:enterprise:*:*:*",
            "vulnerable": true,
            "matchCriteriaId": "F2FEEE2E-6BF9-4332-99A3-690EF68D884F",
            "versionEndExcluding": "23.0.12.5",
            "versionStartIncluding": "23.0.0"
          },
          {
            "criteria": "cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:-:*:*:*",
            "vulnerable": true,
            "matchCriteriaId": "302FFA48-9204-4112-BF23-6182ED62F193",
            "versionEndExcluding": "24.0.10",
            "versionStartIncluding": "24.0.0"
          },
          {
            "criteria": "cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:enterprise:*:*:*",
            "vulnerable": true,
            "matchCriteriaId": "3D2D0CEB-437C-4ABA-9915-EFCB776E7ADC",
            "versionEndExcluding": "24.0.10",
            "versionStartIncluding": "24.0.0"
          },
          {
            "criteria": "cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:-:*:*:*",
            "vulnerable": true,
            "matchCriteriaId": "282F04F1-B4E4-4DC2-82CA-55DB39A3F373",
            "versionEndExcluding": "25.0.4",
            "versionStartIncluding": "25.0.0"
          },
          {
            "criteria": "cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:enterprise:*:*:*",
            "vulnerable": true,
            "matchCriteriaId": "E14A1D06-7AB2-40C2-806F-7EE34595DAF7",
            "versionEndExcluding": "25.0.4",
            "versionStartIncluding": "25.0.0"
          }
        ],
        "operator": "OR"
      }
    ]
  }
]

Overview

Social media

Risk scores

CVSS 3.1

Weaknesses

Configurations

References