aaa: .NET Misconfiguration: Use of Impersonation
CVE-2024-46943 is a high-severity .NET misconfiguration: use of impersonation vulnerability in aaa from Opendaylight, 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 aaa versions: 0.19.3 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 0.56% chance of exploitation within 30 days, which is low compared with other CVEs.
High severity with no evidence of exploitation so far.
What to do
- Check which version of aaa you run against the affected versions below, and install the vendor's latest release.
- Read the advisory on lf-opendaylight.atlassian.net 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
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Opendaylight | aaa | 0.19.3 and earlier | Not stated |
| Opendaylight | Authentication, Authorization And Accounting | 0.19.3 and earlier | 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
- 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 | 9.1 | Critical | CISA (ADP) |
Official description
An issue was discovered in OpenDaylight Authentication, Authorization and Accounting (AAA) through 0.19.3. A rogue controller can join a cluster to impersonate an offline peer, even if this rogue controller does not possess the complete cluster configuration information.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: .NET Misconfiguration: Use of Impersonation
Allowing a.NET application to run at potentially escalated levels of access to the underlying operating and file systems can be dangerous and result in various forms of attacks.
How developers prevent this class of flaw
- Run the application with limited privilege to the underlying operating and file system.
More .NET Misconfiguration: Use of Impersonation vulnerabilities (CWE-520)
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
Advisories
- lf-opendaylight.atlassian.net/browse/AAA-285Issue Tracking
Patches and release notes
Other references
- doi.org/10.48550/arXiv.2408.16940Technical Description
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