An issue was discovered on D-Link DCS-1100 and DCS-1130 devices.
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-798.
Summary
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.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 4
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:dlink:dcs-1130_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | D-Link Japan K.K. |
| cpe:2.3:h:dlink:dcs-1130:-:*:*:*:*:*:*:* | not specified by NVD | Running on | D-Link Japan K.K. |
| cpe:2.3:o:dlink:dcs-1100_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | D-Link Japan K.K. |
| cpe:2.3:h:dlink:dcs-1100:-:*:*:*:*:*:*:* | not specified by NVD | Running on | D-Link Japan K.K. |
- cpe:2.3:o:dlink:dcs-1130_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·D-Link Japan K.K.
- cpe:2.3:h:dlink:dcs-1130:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·D-Link Japan K.K.
- cpe:2.3:o:dlink:dcs-1100_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·D-Link Japan K.K.
- cpe:2.3:h:dlink:dcs-1100:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·D-Link Japan K.K.
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2017-8415
- 2026-10-03 Alias added: GHSA-3qrh-88fr-gvx6
References
More D-Link Japan K.K. Dcs-1100 Firmware vulnerabilities
- TI-2013-01406 A Command Injection vulnerability exists in the /var/www/cgi-bin/rtpd.cgi script in… CVSS 3.1CRITICAL 9.8
- TI-2017-05971 An issue was discovered on D-Link DCS-1100 and DCS-1130 devices. CVSS 3.1HIGH 8.8
- TI-2017-05968 An issue was discovered on D-Link DCS-1100 and DCS-1130 devices. CVSS 3.1HIGH 8.8
- TI-2017-05965 An issue was discovered on D-Link DCS-1100 and DCS-1130 devices. CVSS 3.1CRITICAL 9.8
- TI-2013-01409 An Information Disclosure vulnerability exists due to insufficient validation of… CVSS 3.1HIGH 7.5
- TI-2017-05967 An issue was discovered on D-Link DCS-1100 and DCS-1130 devices. CVSS 3.1HIGH 8.8
Sources
- CVE-2017-8415 · CVE Program
- CVE-2017-8415 · NVD
- FIRST EPSS
- GHSA-3qrh-88fr-gvx6 · GitHub Advisory Database · CC BY 4.0
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