Vulnerability-Lookup

GHSA-P9M6-QF43-QH47

Vulnerability from github – Published: 2025-08-21 21:32 – Updated: 2025-09-10 21:30

Details

EasyFTP Server versions up to 1.7.0.11 contain a stack-based buffer overflow vulnerability in the FTP command parser. When processing the CWD (Change Working Directory) command, the server fails to properly validate the length of the input string, allowing attackers to overwrite memory on the stack. This flaw enables remote code execution without authentication, as EasyFTP allows anonymous access by default. The vulnerability was resolved in version 1.7.0.12, after which the product was renamed “UplusFtp.”

Severity

9.8 (Critical)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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

Show details on source website

JSON

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{
  "affected": [],
  "aliases": [
    "CVE-2010-20121"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-121"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-08-21T20:15:31Z",
    "severity": "CRITICAL"
  },
  "details": "EasyFTP Server versions up to 1.7.0.11 contain a stack-based buffer overflow vulnerability in the FTP command parser. When processing the CWD (Change Working Directory) command, the server fails to properly validate the length of the input string, allowing attackers to overwrite memory on the stack. This flaw enables remote code execution without authentication, as EasyFTP allows anonymous access by default. The vulnerability was resolved in version 1.7.0.12, after which the product was renamed \u201cUplusFtp.\u201d",
  "id": "GHSA-p9m6-qf43-qh47",
  "modified": "2025-09-10T21:30:18Z",
  "published": "2025-08-21T21:32:06Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2010-20121"
    },
    {
      "type": "WEB",
      "url": "https://paulmakowski.wordpress.com/2010/02/28/increasing-payload-size-w-return-address-overwrite"
    },
    {
      "type": "WEB",
      "url": "https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/windows/ftp/easyftp_cwd_fixret.rb"
    },
    {
      "type": "WEB",
      "url": "https://seclists.org/bugtraq/2010/Feb/202"
    },
    {
      "type": "WEB",
      "url": "https://www.exploit-db.com/exploits/11668"
    },
    {
      "type": "WEB",
      "url": "https://www.exploit-db.com/exploits/12312"
    },
    {
      "type": "WEB",
      "url": "https://www.exploit-db.com/exploits/14402"
    },
    {
      "type": "WEB",
      "url": "https://www.exploit-db.com/exploits/16737"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/easyftp-server-cwd-command-stack-buffer-overflow"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "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"
    }
  ]
}

CVE-2010-20121 (GCVE-0-2010-20121)

Vulnerability from cvelistv5 – Published: 2025-08-21 20:10 – Updated: 2026-05-15 11:13

Title

EasyFTP Server <= 1.7.0.11 CWD Command Stack Buffer Overflow

Summary

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

SSVC

Exploitation: poc Automatable: yes Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-08-22 15:33 UTC

CWE

CWE-121 - Stack-based Buffer Overflow

Assigner

VulnCheck mitre root

References

8 references

URL	Tags
https://seclists.org/bugtraq/2010/Feb/202	third-party-advisoryexploit
https://raw.githubusercontent.com/rapid7/metasplo…	exploit
https://paulmakowski.wordpress.com/2010/02/28/inc…	technical-descriptionexploit
https://www.exploit-db.com/exploits/12312	exploit
https://www.exploit-db.com/exploits/16737	exploit
https://www.exploit-db.com/exploits/11668	exploit
https://www.exploit-db.com/exploits/14402	exploit
https://www.vulncheck.com/advisories/easyftp-serv…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version
KMiNT21 Software	EasyFTP Server	Affected: 0 , ≤ 1.7.0.11 (custom) cpe:2.3:a:easyftp_server_project:easyftp_server::::::::

Date Public

2010-03-09 00:00

Credits

Paul Makowski

Show details on NVD website

JSON

To clipboard

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Sightings

Author	Source	Type	Date	Other

Nomenclature

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.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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GHSA-P9M6-QF43-QH47

CVE-2010-20121 (GCVE-0-2010-20121)

Tags

Sightings

Nomenclature

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