WBR-6012: Loop with Unreachable Exit Condition
CVE-2024-33623 is a high-severity loop with unreachable exit condition vulnerability in WBR-6012 from LevelOne, with a CVSS 3.1 base score of 7.5 out of 10. It can be exploited remotely over the network by an unauthenticated attacker, without any action from a user. Affected WBR-6012 versions: R0.40e6. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 11.9% chance of exploitation within 30 days, which is in the top 3.83% of all scored CVEs.
EPSS places it among the vulnerabilities most likely to be exploited soon.
What to do
- Check which version of WBR-6012 you run against the affected versions below, and install the vendor's latest release.
- Until you can update, restrict network access to the affected service so it is not reachable from untrusted networks.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| LevelOne | WBR-6012 | R0.40e6 | Not stated |
| Level1 | Wbr-6012 Firmware | r0.40e6 | 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
- NetworkCan be exploited remotely over a network, including the internet.
- 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
- NoneNo data is disclosed.
- Integrity
- NoneNothing can be modified.
- Availability
- HighThe component can be taken down completely.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H. Scored by NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 3.1 | 3.7 | Low | CNA (cisco.com) |
| CVSS 3.1 | 7.5 | High | NVD |
Official description
A denial of service vulnerability exists in the Web Application functionality of LevelOne WBR-6012 R0.40e6. A specially crafted HTTP request can lead to a reboot. An attacker can send an HTTP request to trigger this vulnerability.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Loop with Unreachable Exit Condition
The product contains an iteration or loop with an exit condition that cannot be reached, i.e., an infinite loop.
More Loop with Unreachable Exit Condition vulnerabilities (CWE-835)
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: partial).
- Record last changed materially (score, affected products, status or references).
References
Technical write-ups (may include proof of concept)
- talosintelligence.com/vulnerability_reports/TALOS-2024-2001Exploit, Third Party Advisory
Other references
Other vulnerabilities in WBR-6012
- 7.5 High severity
- 8.8 High severity
- 7.5 High severity
- 9.8 Critical severity
- 8.1 High severity
- 7.5 High severity
Recent Loop with Unreachable Exit Condition vulnerabilities
- 7.5 High severity
- 7.5 High severity
- 8.7 High severity
- 9.1 Critical severity
- 7.5 High severity
- 7.5 High severity
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