github - ghsa-3qrh-88fr-gvx6

GHSA-3QRH-88FR-GVX6

Vulnerability from github – Published: 2022-05-24 16:49 – Updated: 2022-05-24 16:49

Details

An issue was discovered on D-Link DCS-1100 and DCS-1130 devices. The device has a custom telnet daemon as a part of the busybox and retrieves the password from the shadow file using the function getspnam at address 0x00053894. Then performs a crypt operation on the password retrieved from the user at address 0x000538E0 and performs a strcmp at address 0x00053908 to check if the password is correct or incorrect. However, the /etc/shadow file is a part of CRAM-FS filesystem which means that the user cannot change the password and hence a hardcoded hash in /etc/shadow is used to match the credentials provided by the user. This is a salted hash of the string "admin" and hence it acts as a password to the device which cannot be changed as the whole filesystem is read only.

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{
  "affected": [],
  "aliases": [
    "CVE-2017-8415"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-798"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2019-07-02T21:15:00Z",
    "severity": "CRITICAL"
  },
  "details": "An issue was discovered on D-Link DCS-1100 and DCS-1130 devices. The device has a custom telnet daemon as a part of the busybox and retrieves the password from the shadow file using the function getspnam at address 0x00053894. Then performs a crypt operation on the password retrieved from the user at address 0x000538E0 and performs a strcmp at address 0x00053908 to check if the password is correct or incorrect. However, the /etc/shadow file is a part of CRAM-FS filesystem which means that the user cannot change the password and hence a hardcoded hash in /etc/shadow is used to match the credentials provided by the user. This is a salted hash of the string \"admin\" and hence it acts as a password to the device which cannot be changed as the whole filesystem is read only.",
  "id": "GHSA-3qrh-88fr-gvx6",
  "modified": "2022-05-24T16:49:14Z",
  "published": "2022-05-24T16:49:14Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2017-8415"
    },
    {
      "type": "WEB",
      "url": "https://github.com/ethanhunnt/IoT_vulnerabilities/blob/master/Dlink_DCS_1130_security.pdf"
    },
    {
      "type": "WEB",
      "url": "https://seclists.org/bugtraq/2019/Jun/8"
    },
    {
      "type": "WEB",
      "url": "http://packetstormsecurity.com/files/153226/Dlink-DCS-1130-Command-Injection-CSRF-Stack-Overflow.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2017-8415 (GCVE-0-2017-8415)

Vulnerability from cvelistv5 – Published: 2019-07-02 20:13 – Updated: 2024-08-05 16:34

Summary

Severity ?

No CVSS data available.

CWE

Assigner

mitre

References

URL

Tags

	https://seclists.org/bugtraq/2019/Jun/8	mailing-listx_refsource_BUGTRAQ
	http://packetstormsecurity.com/files/153226/Dlink…	x_refsource_MISC
	https://github.com/ethanhunnt/IoT_vulnerabilities…	x_refsource_MISC

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Sightings

Author	Source	Type	Date

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.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-3QRH-88FR-GVX6

CVE-2017-8415 (GCVE-0-2017-8415)

Tags

Sightings

Nomenclature