2N Access Commander: Improper Validation of Integrity Check Value
CVE-2024-47255 is a high-severity improper validation of integrity check value vulnerability in 2N Access Commander from 2N, with a CVSS 3.1 base score of 7.8 out of 10. It can be exploited with local access to the system by an attacker with a low-privileged account, without any action from a user. Affected 2N Access Commander versions: <=3.1.1.2. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 0.1% 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 2N Access Commander you run against the affected versions below, and install the vendor's latest release.
- Read the advisory on 2n.com for workarounds and exact fixed builds.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| 2N | 2N Access Commander | <=3.1.1.2 | Not stated |
| 2n | access_commander | 3.1.1.2 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
- LocalThe attacker needs local access or must trick a user into running something.
- 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:L/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 | 4.7 | Medium | CNA (axis.com) |
| CVSS 3.1 | 7.8 | High | NVD |
Official description
In 2N Access Commander versions 3.1.1.2 and prior, a local attacker can escalate their privileges in the system which could allow for arbitrary code execution with root permissions.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Improper Validation of Integrity Check Value
The product does not validate or incorrectly validates the integrity check values or checksums of a message.
How developers prevent this class of flaw
- The protocol specification describes the algorithm used for calculating the checksum. It is then a matter of implementing the calculation and verifying that the calculated checksum and the received checksum match.
More Improper Validation of Integrity Check Value vulnerabilities (CWE-354)
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
Other vulnerabilities in 2N Access Commander
- 8.1 High severity
- 7.2 High severity
- 7.2 High severity
Recent Improper Validation of Integrity Check Value vulnerabilities
- 8.7 High severity
- 9.0 Critical severity
- 7.8 High severity
- 7.6 High severity
- 8.3 High severity
- 7.5 High severity
Spotted an error? Tell us.