Omnia Mpx Node Firmware: Authorization Bypass Through User-Controlled Key
CVE-2022-43326 is a high-severity authorization bypass through user-controlled key vulnerability in Omnia Mpx Node Firmware from Telosalliance, 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. The record lists version 1.5.0 as the first without the flaw, so updating Omnia Mpx Node Firmware to that release or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 0.73% chance of exploitation within 30 days, higher than 55% of scored CVEs.
High severity with no evidence of exploitation so far.
What to do
- Update Omnia Mpx Node Firmware to 1.5.0 or a later version.
- 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 |
|---|---|---|---|
| Telosalliance | Omnia Mpx Node Firmware | 1.0.0 up to, but not including, 1.5.0 | 1.5.0 |
Version data comes from NVD's product matching. 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
- HighData or code can be modified at will.
- Availability
- NoneAvailability is not affected.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N. Scored by NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 3.1 | 7.5 | High | NVD |
| CVSS 3.1 | 7.5 | High | CISA (ADP) |
Official description
An Insecure Direct Object Reference (IDOR) vulnerability in the password reset function of Telos Alliance Omnia MPX Node 1.0.0-1.4.[*] allows attackers to arbitrarily change user and Administrator account passwords.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Authorization Bypass Through User-Controlled Key
The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data.
How developers prevent this class of flaw
- For each and every data access, ensure that the user has sufficient privilege to access the record that is being requested.
- Make sure that the key that is used in the lookup of a specific user's record is not controllable externally by the user or that any tampering can be detected.
- Use encryption in order to make it more difficult to guess other legitimate values of the key or associate a digital signature with the key so that the server can verify that there has been no tampering.
More Authorization Bypass Through User-Controlled Key vulnerabilities (CWE-639)
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: yes, technical impact: partial).
- Record last changed materially (score, affected products, status or references).
References
Technical write-ups (may include proof of concept)
- cyber-guy.gitbook.io/cyber-guys-blog/pocs/cve-2022-43326Exploit, Third Party Advisory
Other vulnerabilities in Omnia Mpx Node Firmware
- 8.8 High severity
- 9.8 Critical severity
- 9.8 Critical severity
Recent Authorization Bypass Through User-Controlled Key vulnerabilities
- 7.5 High severity
- 8.1 High severity
- 9.8 Critical severity
- 7.5 High severity
- 9.1 Critical severity
- 9.1 Critical severity
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