GSD-2020-15261

Vulnerability from gsd - Updated: 2023-12-13 01:21
Details
On Windows the Veyon Service before version 4.4.2 contains an unquoted service path vulnerability, allowing locally authenticated users with administrative privileges to run malicious executables with LocalSystem privileges. Since Veyon users (both students and teachers) usually don't have administrative privileges, this vulnerability is only dangerous in anyway unsafe setups. The problem has been fixed in version 4.4.2. As a workaround, the exploitation of the vulnerability can be prevented by revoking administrative privileges from all potentially untrustworthy users.
Aliases
Aliases

{
  "GSD": {
    "alias": "CVE-2020-15261",
    "description": "On Windows the Veyon Service before version 4.4.2 contains an unquoted service path vulnerability, allowing locally authenticated users with administrative privileges to run malicious executables with LocalSystem privileges. Since Veyon users (both students and teachers) usually don\u0027t have administrative privileges, this vulnerability is only dangerous in anyway unsafe setups. The problem has been fixed in version 4.4.2. As a workaround, the exploitation of the vulnerability can be prevented by revoking administrative privileges from all potentially untrustworthy users.",
    "id": "GSD-2020-15261",
    "references": [
      "https://packetstormsecurity.com/files/cve/CVE-2020-15261"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2020-15261"
      ],
      "details": "On Windows the Veyon Service before version 4.4.2 contains an unquoted service path vulnerability, allowing locally authenticated users with administrative privileges to run malicious executables with LocalSystem privileges. Since Veyon users (both students and teachers) usually don\u0027t have administrative privileges, this vulnerability is only dangerous in anyway unsafe setups. The problem has been fixed in version 4.4.2. As a workaround, the exploitation of the vulnerability can be prevented by revoking administrative privileges from all potentially untrustworthy users.",
      "id": "GSD-2020-15261",
      "modified": "2023-12-13T01:21:43.733276Z",
      "schema_version": "1.4.0"
    }
  },
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        "ID": "CVE-2020-15261",
        "STATE": "PUBLIC",
        "TITLE": "Unquoted service path vulnerability on Veyon"
      },
      "affects": {
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            {
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                    "version": {
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                          "version_value": "\u003c 0.11.5"
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          }
        ]
      },
      "impact": {
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          "attackVector": "NETWORK",
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          "baseScore": 8,
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          "confidentialityImpact": "HIGH",
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                "value": "CWE-428 Unquoted Search Path or Element"
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          },
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      },
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        "discovery": "UNKNOWN"
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    },
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      "impact": {
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          "cvssV2": {
            "accessComplexity": "LOW",
            "accessVector": "LOCAL",
            "authentication": "NONE",
            "availabilityImpact": "COMPLETE",
            "baseScore": 7.2,
            "confidentialityImpact": "COMPLETE",
            "integrityImpact": "COMPLETE",
            "vectorString": "AV:L/AC:L/Au:N/C:C/I:C/A:C",
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          },
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          "impactScore": 10.0,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
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          "severity": "HIGH",
          "userInteractionRequired": false
        },
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            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 6.7,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "HIGH",
            "scope": "UNCHANGED",
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          "exploitabilityScore": 0.8,
          "impactScore": 5.9
        }
      },
      "lastModifiedDate": "2022-10-18T20:13Z",
      "publishedDate": "2020-10-19T22:15Z"
    }
  }
}


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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

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