VDE-2021-031

Vulnerability from csaf_mbconnectlinegmbh - Published: 2021-07-22 11:33 - Updated: 2025-05-14 12:28
Summary
MB connect line: Apache Guacamole related vulnerabilities in mbCONNECT24
Notes
Summary: Two vulnerabilities in mbCONNECT24 and mymbCONNECT24 can lead to information disclosure and arbitrary code execution. Please consult the CVE entries for details.
Remediation: Update to 2.9.0
CVE-2020-9498

Apache Guacamole 1.1.0 and older may mishandle pointers involved inprocessing data received via RDP static virtual channels. If a userconnects to a malicious or compromised RDP server, a series ofspecially-crafted PDUs could result in memory corruption, possiblyallowing arbitrary code to be executed with the privileges of therunning guacd process.

6.7 (Medium)
CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H
CWE-787 - Out-of-bounds Write
Vendor Fix Update to 3.9R0.5
CVE-2020-9497

Apache Guacamole 1.1.0 and older do not properly validate datareceived from RDP servers via static virtual channels. If a userconnects to a malicious or compromised RDP server, specially-craftedPDUs could result in disclosure of information within the memory ofthe guacd process handling the connection.

4.4 (Medium)
CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:N/A:N
CWE-20 - Improper Input Validation
Vendor Fix Update to 3.9R0.5
References
Acknowledgments
CERT@VDE certvde.com
To clipboard 

{
  "document": {
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      {
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        "summary": "coordination",
        "urls": [
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    "lang": "en-US",
    "notes": [
      {
        "category": "summary",
        "text": "Two vulnerabilities in mbCONNECT24 and mymbCONNECT24 can lead to information disclosure and arbitrary code execution.\n\nPlease consult the CVE entries for details.",
        "title": "Summary"
      },
      {
        "category": "description",
        "text": "Update to 2.9.0",
        "title": "Remediation"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "security-team@mbconnectline.de",
      "name": "MB connect line GmbH",
      "namespace": "https://mbconnectline.com"
    },
    "references": [
      {
        "category": "external",
        "summary": "MB connect line advisory overview at CERT@VDE",
        "url": "https://certvde.com/en/advisories/vendor/mbconnectline/"
      },
      {
        "category": "self",
        "summary": "VDE-2021-031: MB connect line: Apache Guacamole related vulnerabilities in mbCONNECT24 - HTML",
        "url": "https://certvde.com/en/advisories/VDE-2021-031"
      },
      {
        "category": "self",
        "summary": "VDE-2021-031: MB connect line: Apache Guacamole related vulnerabilities in mbCONNECT24 - CSAF",
        "url": "https://mbconnectline.csaf-tp.certvde.com/.well-known/csaf/white/2021/vde-2021-031.json"
      }
    ],
    "title": "MB connect line: Apache Guacamole related vulnerabilities in mbCONNECT24",
    "tracking": {
      "aliases": [
        "VDE-2021-031"
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      "current_release_date": "2025-05-14T12:28:19.000Z",
      "generator": {
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          "date": "2021-07-22T11:35:00.000Z",
          "number": "1",
          "summary": "Initial revision."
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          "date": "2025-05-14T12:28:19.000Z",
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                    "name": "\u003c=2.8.0",
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                      "product_id": "CSAFPID-51001"
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        "name": "Out-of-bounds Write"
      },
      "notes": [
        {
          "category": "description",
          "text": "Apache Guacamole 1.1.0 and older may mishandle pointers involved inprocessing data received via RDP static virtual channels. If a userconnects to a malicious or compromised RDP server, a series ofspecially-crafted PDUs could result in memory corruption, possiblyallowing arbitrary code to be executed with the privileges of therunning guacd process.",
          "title": "Vulnerability Description"
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      "title": "CVE-2020-9498"
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      },
      "notes": [
        {
          "category": "description",
          "text": "Apache Guacamole 1.1.0 and older do not properly validate datareceived from RDP servers via static virtual channels. If a userconnects to a malicious or compromised RDP server, specially-craftedPDUs could result in disclosure of information within the memory ofthe guacd process handling the connection.",
          "title": "Vulnerability Description"
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            "CSAFPID-51002"
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        }
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      "title": "CVE-2020-9497"
    }
  ]
}


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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • 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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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.