ghsa-fh65-c5x2-5936
Vulnerability from github
Published
2025-08-20 18:30
Modified
2025-08-20 18:30
Severity ?
9.3 (Critical) - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Details

LeapFTP < 3.1.x contains a stack-based buffer overflow vulnerability in its FTP client parser. When the client receives a directory listing containing a filename longer than 528 bytes, the application fails to properly bound-check the input and overwrites the Structured Exception Handler (SEH) chain. This allows an attacker operating a malicious FTP server to execute arbitrary code on the victim’s machine when the file is listed or downloaded.

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{
  "affected": [],
  "aliases": [
    "CVE-2010-20049"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-121"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-08-20T16:15:33Z",
    "severity": "CRITICAL"
  },
  "details": "LeapFTP \u003c\u00a03.1.x contains a stack-based buffer overflow vulnerability in its FTP client parser. When the client receives a directory listing containing a filename longer than 528 bytes, the application fails to properly bound-check the input and overwrites the Structured Exception Handler (SEH) chain. This allows an attacker operating a malicious FTP server to execute arbitrary code on the victim\u2019s machine when the file is listed or downloaded.",
  "id": "GHSA-fh65-c5x2-5936",
  "modified": "2025-08-20T18:30:21Z",
  "published": "2025-08-20T18:30:21Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2010-20049"
    },
    {
      "type": "WEB",
      "url": "https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/windows/ftp/leapftp_list_reply.rb"
    },
    {
      "type": "WEB",
      "url": "https://web.archive.org/web/20111013232627/http://www.leapware.com"
    },
    {
      "type": "WEB",
      "url": "https://web.archive.org/web/20111016194057/https://www.corelan.be/index.php/2010/10/12/death-of-an-ftp-client"
    },
    {
      "type": "WEB",
      "url": "https://www.exploit-db.com/exploits/16704"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/leapftp-stack-buffer-overflow"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}


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