DIR-X4860 A1: Hidden Functionality
CVE-2024-45696 is a high-severity hidden functionality vulnerability in DIR-X4860 A1 from D-Link, with a CVSS 3.1 base score of 8.8 out of 10. It can be exploited from the same local network by an unauthenticated attacker, without any action from a user. Affected DIR-X4860 A1 versions: 1.00; 1.04. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 0.6% chance of exploitation within 30 days, which is low compared with other CVEs.
High severity with no evidence of exploitation so far.
What to do
- Check which version of DIR-X4860 A1 you run against the affected versions below, and install the vendor's latest release.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| D-Link | DIR-X4860 A1 | 1.00; 1.04 | Not stated |
| D-Link | COVR-X1870 | 1.02 and earlier | Not stated |
| D-Link | covr-x1870_firmware | 1.02 and earlier | Not stated |
| D-Link | dir-x4860_firmware | 1.00; 1.04 | Not stated |
Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- AdjacentThe attacker must be on the same local network segment.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- NoneNo account or login is needed.
- User interaction
- NoneNo action by a victim is required.
- Scope
- UnchangedImpact stays within the vulnerable component.
- Confidentiality
- HighAll data handled by the component can be read.
- Integrity
- HighData or code can be modified at will.
- Availability
- HighThe component can be taken down completely.
Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. Scored by CNA (cert.org.tw).
Official description
Certain models of D-Link wireless routers contain hidden functionality. By sending specific packets to the web service, the attacker can forcibly enable the telnet service and log in using hard-coded credentials. The telnet service enabled through this method can only be accessed from within the same local network as the device.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Hidden Functionality
The product contains functionality that is not documented, not part of the specification, and not accessible through an interface or command sequence that is obvious to the product's users or administrators.
How developers prevent this class of flaw
- Always verify the integrity of the product that is being installed.
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: total).
- Record last changed materially (score, affected products, status or references).
References
Third-party and government advisories
- twcert.org.tw/en/cp-139-8087-c3e70-2.htmlThird Party Advisory
- twcert.org.tw/tw/cp-132-8086-93ed5-1.htmlThird Party Advisory
Other vulnerabilities in DIR-X4860 A1
- 9.8 Critical severity
- 9.8 Critical severity
- 9.8 Critical severity
- 9.8 Critical severity
Recent Hidden Functionality vulnerabilities
- 7.1 High severity
- 7.5 High severity
- 9.1 Critical severity
- 9.8 Critical severity
- 7.5 High severity
- 8.8 High severity
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