ghsa-mpmv-49pr-6hch
Vulnerability from github
Published
2022-05-24 16:50
Modified
2024-04-04 01:18
Details

Comodo Antivirus versions 11.0.0.6582 and below are vulnerable to Denial of Service affecting CmdGuard.sys via its filter port "cmdServicePort". A low privileged process can crash CmdVirth.exe to decrease the port's connection count followed by process hollowing a CmdVirth.exe instance with malicious code to obtain a handle to "cmdServicePort". Once this occurs, a specially crafted message can be sent to "cmdServicePort" using "FilterSendMessage" API. This can trigger an out-of-bounds write if lpOutBuffer parameter in FilterSendMessage API is near the end of specified buffer bounds. The crash occurs when the driver performs a memset operation which uses a size beyond the size of buffer specified, causing kernel crash.

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{
  "affected": [],
  "aliases": [
    "CVE-2019-3973"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-787"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2019-07-17T21:15:00Z",
    "severity": "MODERATE"
  },
  "details": "Comodo Antivirus versions 11.0.0.6582 and below are vulnerable to Denial of Service affecting CmdGuard.sys via its filter port \"cmdServicePort\". A low privileged process can crash CmdVirth.exe to decrease the port\u0027s connection count followed by process hollowing a CmdVirth.exe instance with malicious code to obtain a handle to \"cmdServicePort\". Once this occurs, a specially crafted message can be sent to \"cmdServicePort\" using \"FilterSendMessage\" API. This can trigger an out-of-bounds write if lpOutBuffer parameter in FilterSendMessage API is near the end of specified buffer bounds. The crash occurs when the driver performs a memset operation which uses a size beyond the size of buffer specified, causing kernel crash.",
  "id": "GHSA-mpmv-49pr-6hch",
  "modified": "2024-04-04T01:18:13Z",
  "published": "2022-05-24T16:50:36Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2019-3973"
    },
    {
      "type": "WEB",
      "url": "https://www.tenable.com/security/research/tra-2019-34"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}


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