C-Bus Network Automation Controller, LSS5500NAC: Weak Password Requirements
CVE-2022-32513 is a critical-severity weak password requirements vulnerability in C-Bus Network Automation Controller, LSS5500NAC from Schneider Electric, 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. The record lists version V1.10.0 as the first without the flaw, so updating C-Bus Network Automation Controller, LSS5500NAC to that release or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 0.71% chance of exploitation within 30 days, higher than 54% of scored CVEs.
Critical severity: a successful attack would have severe impact.
What to do
- Update C-Bus Network Automation Controller, LSS5500NAC to V1.10.0 or a later version.
- Update Wiser for C-Bus Automation Controller, LSS5500SHAC to V1.10.0 or a later version.
- Update Clipsal C-Bus Network Automation Controller, 5500NAC to V1.10.0 or a later version.
- Read the advisory on download.schneider-electric.com for workarounds and exact fixed builds.
- Until you can update, restrict network access to the affected service so it is not reachable from untrusted networks.
Affected products and versions
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
- 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 3.1 | 9.8 | Critical | CNA (se.com) |
| CVSS 3.1 | 9.8 | Critical | NVD |
Official description
A CWE-521: Weak Password Requirements vulnerability exists that could allow an attacker to gain control of the device when the attacker brute forces the password. Affected Products: C-Bus Network Automation Controller - LSS5500NAC (Versions prior to V1.10.0), Wiser for C-Bus Automation Controller - LSS5500SHAC (Versions prior to V1.10.0), Clipsal C-Bus Network Automation Controller - 5500NAC (Versions prior to V1.10.0), Clipsal Wiser for C-Bus Automation Controller - 5500SHAC (Versions prior to V1.10.0), SpaceLogic C-Bus Network Automation Controller - 5500NAC2 (Versions prior to V1.10.0), SpaceLogic C-Bus Application Controller - 5500AC2 (Versions prior to V1.10.0)
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Weak Password Requirements
The product does not require that users should have strong passwords.
How developers prevent this class of flaw
- Consider a second authentication factor beyond the password, which prevents the password from being a single point of failure. See CWE-308 for further information.
- Consider implementing a password complexity meter to inform users when a chosen password meets the required attributes.
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: yes, technical impact: total).
- Record last changed materially (score, affected products, status or references).
References
Other vulnerabilities in C-Bus Network Automation Controller, LSS5500NAC
- 9.8 Critical severity
Recent Weak Password Requirements vulnerabilities
- 8.8 High severity
- 9.8 Critical severity
- 7.2 High severity
- 7.5 High severity
- 8.8 High severity
- 9.8 Critical severity
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