A3600R: Use of Hard-coded Password
CVE-2024-7159 is a high-severity use of hard-coded password vulnerability in A3600R from TOTOLINK, 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 A3600R versions: 4.1.2cu.5182_B20201102. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 0.56% 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 A3600R you run against the affected versions below, and install the vendor's latest release.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| TOTOLINK | A3600R | 4.1.2cu.5182_B20201102 | Not stated |
| TOTOLINK | a3600r_firmware | 4.1.2cu.5182_b20201102 | 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 NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 4.0 | 5.1 | Medium | CNA (vuldb.com) |
| CVSS 3.1 | 5.5 | Medium | CNA (vuldb.com) |
| CVSS 3.1 | 8.8 | High | NVD |
| CVSS 2.0 | 4.9 | Medium | CNA (vuldb.com) |
Official description
A vulnerability was found in TOTOLINK A3600R 4.1.2cu.5182_B20201102. It has been rated as critical. This issue affects some unknown processing of the file /web_cste/cgi-bin/product.ini of the component Telnet Service. The manipulation leads to use of hard-coded password. The exploit has been disclosed to the public and may be used. The identifier VDB-272573 was assigned to this vulnerability. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Use of Hard-coded Password
The product contains a hard-coded password, which it uses for its own inbound authentication or for outbound authentication to external components.
How developers prevent this class of flaw
- For outbound authentication: store passwords outside of the code in a strongly-protected, encrypted configuration file or database that is protected from access by all outsiders, including other local users on the same system. Properly protect the key (CWE-320). If you cannot use encryption to protect the file, then make sure that the permissions are as restrictive as possible.
- For inbound authentication: Rather than hard-code a default username and password for first time logins, utilize a first login mode that requires the user to enter a unique strong password.
- Perform access control checks and limit which entities can access the feature that requires the hard-coded password. For example, a feature might only be enabled through the system console instead of through a network connection.
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: poc, automatable: no, technical impact: partial).
- Record last changed materially (score, affected products, status or references).
References
Third-party and government advisories
- vuldb.com/?ctiid.272573Permissions Required, Third Party Advisory
- vuldb.com/?id.272573Permissions Required, Third Party Advisory
- vuldb.com/?submit.377942Third Party Advisory
Technical write-ups (may include proof of concept)
Other vulnerabilities in A3600R
- 9.8 Critical severity
- 8.8 High severity
- 8.8 High severity
- 8.8 High severity
- 8.8 High severity
- 8.8 High severity
Recent Use of Hard-coded Password vulnerabilities
- 7.8 High severity
- 8.8 High severity
- 9.4 Critical severity
- 9.8 Critical severity
- 8.8 High severity
- 7.5 High severity
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