VAR1200-H: Improper Access Control
CVE-2024-29082 is a high-severity improper access control vulnerability in VAR1200-H from Vonets, with a CVSS 3.1 base score of 8.6 out of 10. It can be exploited remotely over the network by an unauthenticated attacker, without any action from a user. Affected VAR1200-H versions: 3.3.23.6.9 and earlier. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 0.8% chance of exploitation within 30 days, higher than 57% of scored CVEs.
High severity with no evidence of exploitation so far.
What to do
- Check which version of VAR1200-H 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 |
|---|---|---|---|
| Vonets | VAR1200-H | 3.3.23.6.9 and earlier | Not stated |
| Vonets | VAR1200-L | 3.3.23.6.9 and earlier | Not stated |
| Vonets | VAR600-H | 3.3.23.6.9 and earlier | Not stated |
| Vonets | VAP11AC | 3.3.23.6.9 and earlier | Not stated |
| Vonets | VAP11G-500S | 3.3.23.6.9 and earlier | Not stated |
| Vonets | VBG1200 | 3.3.23.6.9 and earlier | Not stated |
| Vonets | VAP11S-5G | 3.3.23.6.9 and earlier | Not stated |
| Vonets | VAP11S | 3.3.23.6.9 and earlier | Not stated |
| Vonets | VAR11N-300 | 3.3.23.6.9 and earlier | Not stated |
| Vonets | VAP11G-300 | 3.3.23.6.9 and earlier | Not stated |
| Vonets | VAP11N-300 | 3.3.23.6.9 and earlier | Not stated |
| Vonets | VAP11G | 3.3.23.6.9 and earlier | Not stated |
| Vonets | VAP11G-500 | 3.3.23.6.9 and earlier | Not stated |
| Vonets | VGA-1000 | 3.3.23.6.9 and earlier | Not stated |
| Vonets | var1200-h_firmware | 3.3.23.6.9 and earlier | Not stated |
| Vonets | var1200-l_firmware | 3.3.23.6.9 and earlier | Not stated |
| Vonets | var600-h_firmware | 3.3.23.6.9 and earlier | Not stated |
| Vonets | vap11ac_firmware | 3.3.23.6.9 and earlier | Not stated |
| Vonets | vap11g-500s_firmware | 3.3.23.6.9 and earlier | Not stated |
| Vonets | vbg1200_firmware | 3.3.23.6.9 and earlier | Not stated |
| Vonets | vap11s-5g_firmware | 3.3.23.6.9 and earlier | Not stated |
| Vonets | vap11s_firmware | 3.3.23.6.9 and earlier | Not stated |
| Vonets | var11n-300_firmware | 3.3.23.6.9 and earlier | Not stated |
| Vonets | vap11n-300_firmware | 3.3.23.6.9 and earlier | Not stated |
| Vonets | vap11g_firmware | 3.3.23.6.9 and earlier | Not stated |
Version data comes from the organisation that assigned the CVE; 3 further products are omitted here. 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
- LowSome restricted data can be read.
- Integrity
- LowLimited modification of data is possible.
- Availability
- HighThe component can be taken down completely.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H. Scored by NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 4.0 | 8.8 | High | CNA (hq.dhs.gov) |
| CVSS 3.1 | 8.6 | High | CNA (hq.dhs.gov) |
| CVSS 3.1 | 8.6 | High | NVD |
Official description
Improper access control vulnerability affecting Vonets industrial wifi bridge relays and wifi bridge repeaters, software versions 3.3.23.6.9 and prior, enables an unauthenticated remote attacker to bypass authentication and factory reset the device via unprotected goform endpoints.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Improper Access Control
The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.
How developers prevent this class of flaw
- Very carefully manage the setting, management, and handling of privileges. Explicitly manage trust zones in the software.
- Compartmentalize the system to have safe areas where trust boundaries can be unambiguously drawn. Do not allow sensitive data to go outside of the trust boundary and always be careful when interfacing with a compartment outside of the safe area. Ensure that appropriate compartmentalization is built into the system design, and the compartmentalization allows for and reinforces privilege separation functionality. Architects and designers should rely on the principle of least privilege to decide the appropriate time to use privileges and the time to drop privileges.
Timeline
- CISA published its SSVC assessment (exploitation: none, automatable: yes, technical impact: partial).
- CVE record published.
- Record last changed materially (score, affected products, status or references).
References
Third-party and government advisories
- cisa.gov/news-events/ics-advisories/icsa-24-214-08Third Party Advisory, US Government Resource
Other vulnerabilities in VAR1200-H
- 9.8 Critical severity
- 7.5 High severity
- 7.5 High severity
- 9.8 Critical severity
- 9.9 Critical severity
- 9.8 Critical severity
Recent Improper Access Control vulnerabilities
- 9.9 Critical severity
- 9.8 Critical severity
- 8.8 High severity
- 8.8 High severity
- 7.1 High severity
- 7.3 High severity
Spotted an error? Tell us.