Security Event Manager: Deserialization of Untrusted Data
CVE-2024-0692 is a high-severity deserialization of untrusted data vulnerability in Security Event Manager from SolarWinds, with a CVSS 3.1 base score of 8.8 out of 10. It can be exploited from the same local network by an unauthenticated attacker, without any action from a user. The record lists version 2023.4 as the first without the flaw, so updating Security Event Manager to that release or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 92.2% chance of exploitation within 30 days, which is in the top 0.18% of all scored CVEs.
Exploitation in the next 30 days is more likely than not, according to EPSS.
What to do
- Update Security Event Manager to 2023.4 or a later version.
- Read the advisory on solarwinds.com for workarounds and exact fixed builds.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| SolarWinds | Security Event Manager | 2023.4 and previous versions; before 2023.4 | 2023.4 |
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
- AdjacentThe attacker must be on the same local network segment.
- 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:A/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 | 8.8 | High | CNA (solarwinds.com) |
| CVSS 3.1 | 8.8 | High | NVD |
Official description
The SolarWinds Security Event Manager was susceptible to Remote Code Execution Vulnerability. This vulnerability allows an unauthenticated user to abuse SolarWinds’ service, resulting in remote code execution.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Deserialization of Untrusted Data
The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.
How developers prevent this class of flaw
- If available, use the signing/sealing features of the programming language to assure that deserialized data has not been tainted. For example, a hash-based message authentication code (HMAC) could be used to ensure that data has not been modified.
- When deserializing data, populate a new object rather than just deserializing. The result is that the data flows through safe input validation and that the functions are safe.
- Explicitly define a final object() to prevent deserialization.
More Deserialization of Untrusted Data vulnerabilities (CWE-502)
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: total).
- Record last changed materially (score, affected products, status or references).
References
Patches and release notes
Recent Deserialization of Untrusted Data vulnerabilities
- 8.8 High severity
- 7.5 High severity
- 9.1 Critical severity
- 9.8 Critical severity
- 9.8 Critical severity
- 8.1 High severity
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