CVE-2021-41159 (GCVE-0-2021-41159)

Vulnerability from cvelistv5 – Published: 2021-10-21 00:00 – Updated: 2024-08-04 02:59
VLAI?
Title
Improper client input validation for FreeRDP gateway connections allows to overwrite memory
Summary
FreeRDP is a free implementation of the Remote Desktop Protocol (RDP), released under the Apache license. All FreeRDP clients prior to version 2.4.1 using gateway connections (`/gt:rpc`) fail to validate input data. A malicious gateway might allow client memory to be written out of bounds. This issue has been resolved in version 2.4.1. If you are unable to update then use `/gt:http` rather than /gt:rdp connections if possible or use a direct connection without a gateway.
Severity ?
5.8 (Medium)
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:N/I:H/A:N
CWE
Assigner
References
Impacted products
Vendor Product Version
FreeRDP FreeRDP Affected: < 2.4.1
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        "providerMetadata": {
          "dateUpdated": "2024-08-04T02:59:31.631Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
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            "url": "https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-vh34-m9h7-95xq"
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          {
            "name": "FEDORA-2021-2c25f03d0b",
            "tags": [
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            ],
            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DWJXQOWKNR7O5HM2HFJOM4GBUFPTE3RG/"
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            "name": "GLSA-202210-24",
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      "descriptions": [
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          "lang": "en",
          "value": "FreeRDP is a free implementation of the Remote Desktop Protocol (RDP), released under the Apache license. All FreeRDP clients prior to version 2.4.1 using gateway connections (`/gt:rpc`) fail to validate input data. A malicious gateway might allow client memory to be written out of bounds. This issue has been resolved in version 2.4.1. If you are unable to update then use `/gt:http` rather than /gt:rdp connections if possible or use a direct connection without a gateway."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 5.8,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "HIGH",
            "privilegesRequired": "HIGH",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:N/I:H/A:N",
            "version": "3.1"
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      "problemTypes": [
        {
          "descriptions": [
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              "description": "CWE-787: Out-of-bounds Write",
              "lang": "en",
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      "providerMetadata": {
        "dateUpdated": "2022-10-31T00:00:00.000Z",
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        "shortName": "GitHub_M"
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          "url": "https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-vh34-m9h7-95xq"
        },
        {
          "name": "FEDORA-2021-2c25f03d0b",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DWJXQOWKNR7O5HM2HFJOM4GBUFPTE3RG/"
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        {
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      "source": {
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        "discovery": "UNKNOWN"
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      "title": "Improper client input validation for FreeRDP gateway connections allows to overwrite memory"
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    "datePublished": "2021-10-21T00:00:00.000Z",
    "dateReserved": "2021-09-15T00:00:00.000Z",
    "dateUpdated": "2024-08-04T02:59:31.631Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}


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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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