Vulnerability-Lookup

GHSA-FCG6-9HQQ-Q764

Vulnerability from github – Published: 2022-05-14 02:45 – Updated: 2025-04-20 03:48

Details

A use-after-free issue could be triggered remotely in the SFTP component of PSFTPd 10.0.4 Build 729. This issue could be triggered prior to authentication. The PSFTPd server did not automatically restart, which enabled attackers to perform a very effective DoS attack against this service. By sending a crafted SSH identification / version string to the server, a NULL pointer dereference could be caused, apparently because of a race condition in the window message handling, performing the cleanup for invalid connections. This incorrect cleanup code has a use-after-free.

Severity

5.9 (Medium)


                  
                    CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

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{
  "affected": [],
  "aliases": [
    "CVE-2017-15271"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-416"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2017-11-15T16:29:00Z",
    "severity": "MODERATE"
  },
  "details": "A use-after-free issue could be triggered remotely in the SFTP component of PSFTPd 10.0.4 Build 729. This issue could be triggered prior to authentication. The PSFTPd server did not automatically restart, which enabled attackers to perform a very effective DoS attack against this service. By sending a crafted SSH identification / version string to the server, a NULL pointer dereference could be caused, apparently because of a race condition in the window message handling, performing the cleanup for invalid connections. This incorrect cleanup code has a use-after-free.",
  "id": "GHSA-fcg6-9hqq-q764",
  "modified": "2025-04-20T03:48:29Z",
  "published": "2022-05-14T02:45:52Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2017-15271"
    },
    {
      "type": "WEB",
      "url": "https://www.exploit-db.com/exploits/43144"
    },
    {
      "type": "WEB",
      "url": "https://www.x41-dsec.de/lab/advisories/x41-2017-006-psftpd"
    },
    {
      "type": "WEB",
      "url": "http://packetstormsecurity.com/files/144972/PSFTPd-Windows-FTP-Server-10.0.4-Build-729-Use-After-Free-Log-Injection.html"
    },
    {
      "type": "WEB",
      "url": "http://www.securityfocus.com/archive/1/541518/100/0/threaded"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2017-15271 (GCVE-0-2017-15271)

Vulnerability from cvelistv5 – Published: 2017-11-15 16:00 – Updated: 2024-08-05 19:50

Summary

Severity

No CVSS data available.

CWE

Assigner

mitre CNA under the mitre root

CNA scorecard E 28/100 over 2350 records in the last 180 days details

References

4 references

URL	Tags
http://packetstormsecurity.com/files/144972/PSFTP…	x_refsource_MISC
http://www.securityfocus.com/archive/1/541518/100…	mailing-listx_refsource_BUGTRAQ
https://www.x41-dsec.de/lab/advisories/x41-2017-0…	x_refsource_MISC
https://www.exploit-db.com/exploits/43144/	exploitx_refsource_EXPLOIT-DB

Date Public

2017-11-10 00:00

Show details on NVD website

JSON

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            "url": "http://packetstormsecurity.com/files/144972/PSFTPd-Windows-FTP-Server-10.0.4-Build-729-Use-After-Free-Log-Injection.html"
          },
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            "url": "http://www.securityfocus.com/archive/1/541518/100/0/threaded"
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          },
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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.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

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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.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

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