VAR1200-H: Direct Request
CVE-2024-42001 is a critical-severity direct request vulnerability in VAR1200-H from Vonets, with a CVSS 3.1 base score of 9.8 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 0.68% chance of exploitation within 30 days, higher than 53% of scored CVEs.
Critical severity: a successful attack would have severe impact.
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
- 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:N/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 | 6.1 | Medium | CNA (hq.dhs.gov) |
| CVSS 3.1 | 8.6 | High | CNA (hq.dhs.gov) |
| CVSS 3.1 | 9.8 | Critical | NVD |
Official description
An improper authentication 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 via a specially crafted direct request when another user has an active session.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Direct Request
The web application does not adequately enforce appropriate authorization on all restricted URLs, scripts, or files.
How developers prevent this class of flaw
- Apply appropriate access control authorizations for each access to all restricted URLs, scripts or files.
- Consider using MVC based frameworks such as Struts.
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
- 7.5 High severity
- 7.5 High severity
- 9.8 Critical severity
- 9.9 Critical severity
- 8.6 High severity
- 9.8 Critical severity
Recent Direct Request vulnerabilities
- 9.1 Critical severity
- 7.3 High severity
- 7.3 High severity
- 7.5 High severity
- 8.8 High severity
- 9.8 Critical severity
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