DiskStation Manager (DSM): Improper Control of Dynamically-Managed Code Resources
CVE-2024-5401 is a high-severity improper control of dynamically-managed code resources vulnerability in DiskStation Manager (DSM) from Synology, with a CVSS 3.1 base score of 8.8 out of 10. It can be exploited remotely over the network by an attacker with a low-privileged account, without any action from a user. The record lists versions 7.2.2-72806, 7.2.1-69057-2 as the first without the flaw, so updating DiskStation Manager (DSM) to one of those releases or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 0.41% 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
- Update DiskStation Manager (DSM) to 7.2.2-72806 or 7.2.1-69057-2, whichever matches your release line, or a later version.
- Update Unified Controller (DSMUC) to 3.1.4-23079 or a later version.
- Update Diskstation Manager to 7.2.1-69057-2 or 7.2.2-72806, whichever matches your release line, or a later version.
- Read the advisory on synology.com for workarounds and exact fixed builds.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Synology | DiskStation Manager (DSM) | 7.2.2 up to, but not including, 7.2.2-72806; 7.2.1 up to, but not including, 7.2.1-69057-2 | 7.2.2-72806, 7.2.1-69057-2 |
| Synology | Unified Controller (DSMUC) | 3.1 up to, but not including, 3.1.4-23079 | 3.1.4-23079 |
| Synology | Diskstation Manager | 7.2.1-69057 up to, but not including, 7.2.1-69057-2; 7.2.2-72803 up to, but not including, 7.2.2-72806 | 7.2.1-69057-2, 7.2.2-72806 |
| Synology | Diskstation Manager Unified Controller | 3.1-23028 up to, but not including, 3.1.4-23079 | 3.1.4-23079 |
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
- LowA basic user account is enough.
- 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:L/UI:N/S:U/C:H/I:H/A:H. Scored by NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 3.1 | 4.3 | Medium | CNA (synology.com) |
| CVSS 3.1 | 8.8 | High | NVD |
Official description
Improper control of dynamically-managed code resources vulnerability in WebAPI component in Synology DiskStation Manager (DSM) before 7.1.1-42962-8 and 7.2.1-69057-2 and 7.2.2-72806 and Synology Unified Controller (DSMUC) before 3.1.4-23079 allows remote authenticated users to obtain privileges without consent via unspecified vectors.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Improper Control of Dynamically-Managed Code Resources
The product does not properly restrict reading from or writing to dynamically-managed code resources such as variables, objects, classes, attributes, functions, or executable instructions or statements.
How developers prevent this class of flaw
- For any externally-influenced input, check the input against an allowlist of acceptable values.
- Refactor the code so that it does not need to be dynamically managed.
More Improper Control of Dynamically-Managed Code Resources vulnerabilities (CWE-913)
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: partial).
- Record last changed materially (score, affected products, status or references).
References
Other vulnerabilities in DiskStation Manager (DSM)
- 8.6 High severity
- 8.1 High severity
- 9.8 Critical severity
- 7.2 High severity
- 8.8 High severity
- 8.1 High severity
Recent Improper Control of Dynamically-Managed Code Resources vulnerabilities
- 8.8 High severity
- 7.9 High severity
- 7.3 High severity
- 9.1 Critical severity
- 9.9 Critical severity
- 7.5 High severity
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