{"id":"CVE-2017-8415","aliases":["EUVD-2017-17367","GHSA-3qrh-88fr-gvx6"],"status":"published","title":"An issue was discovered on D-Link DCS-1100 and DCS-1130 devices. The device has a custom telnet...","description":"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.","severity":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.0393,"percentile":0.90443,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-798"],"published":"2019-07-02T20:13:08Z","modified":"2026-06-17T01:26:21Z","products":[{"vendor":"dlink","product":"dcs-1100_firmware"},{"vendor":"dlink","product":"dcs-1130_firmware"}],"references":[{"url":"https://seclists.org/bugtraq/2019/Jun/8","tags":["mailing-list","x_refsource_BUGTRAQ","x_transferred","Mailing List","Third Party Advisory"]},{"url":"http://packetstormsecurity.com/files/153226/Dlink-DCS-1130-Command-Injection-CSRF-Stack-Overflow.html","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","VDB Entry"]},{"url":"https://github.com/ethanhunnt/IoT_vulnerabilities/blob/master/Dlink_DCS_1130_security.pdf","tags":["x_refsource_MISC","x_transferred","Not Applicable","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2017-8415"},{"url":"https://github.com/advisories/GHSA-3qrh-88fr-gvx6"}],"sources":{"cve":[{"id":"CVE-2017-8415","description":"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.","status":"published","published":"2019-07-02T20:13:08Z","modified":"2024-08-05T16:34:22.971Z","updated_at":"2026-11-02T14:33:15.201133Z"}],"euvd":[{"id":"EUVD-2017-17367","description":"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.","status":"published","published":"2019-07-02T20:13:08Z","modified":"2024-08-05T16:34:22Z","updated_at":"2026-11-03T02:39:05.365606Z"}],"ghsa":[{"id":"GHSA-3qrh-88fr-gvx6","title":"An issue was discovered on D-Link DCS-1100 and DCS-1130 devices. The device has a custom telnet...","description":"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.","status":"published","published":"2022-05-24T16:49:14Z","modified":"2023-01-28T05:05:51Z","cwes":["CWE-798"],"updated_at":"2026-11-02T14:44:22.854564Z"}],"nvd":[{"id":"CVE-2017-8415","description":"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.","status":"published","published":"2019-07-02T21:15:10.493Z","modified":"2026-06-17T01:26:21.133Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"version":"2.0","score":10,"vector":"AV:N/AC:L/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary"}],"cwes":["CWE-798"],"updated_at":"2026-11-02T14:04:20.074898Z"}]}}