Secure Enterprise Client: Improper Link Resolution Before File Access
CVE-2023-28868 is a high-severity improper link resolution before file access vulnerability in Secure Enterprise Client from Ncp-e, with a CVSS 3.1 base score of 8.1 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 version 12.22 as the first without the flaw, so updating Secure Enterprise Client to that release or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 0.85% chance of exploitation within 30 days, higher than 59% of scored CVEs.
High severity with no evidence of exploitation so far.
What to do
- Update Secure Enterprise Client to 12.22 or a later version.
- Read the advisory on herolab.usd.de for workarounds and exact fixed builds.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Ncp-e | Secure Enterprise Client | before 12.22 | 12.22 |
Version data comes from NVD's product matching. 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
- NoneNo data is disclosed.
- 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:N/I:H/A:H. Scored by NVD.
Official description
Support Assistant in NCP Secure Enterprise Client before 12.22 allows attackers to delete arbitrary files on the operating system by creating a symbolic link.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Improper Link Resolution Before File Access
The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource.
How developers prevent this class of flaw
- Follow the principle of least privilege when assigning access rights to entities in a software system. Denying access to a file can prevent an attacker from replacing that file with a link to a sensitive file. Ensure good compartmentalization in the system to provide protected areas that can be trusted.
More Improper Link Resolution Before File Access vulnerabilities (CWE-59)
Timeline
- CVE record published.
- Record last changed materially (score, affected products, status or references).
References
Advisories
- herolab.usd.de/en/security-advisories/usd-2022-0002/Exploit, Third Party Advisory
Other vulnerabilities in Secure Enterprise Client
- 8.8 High severity
Recent Improper Link Resolution Before File Access vulnerabilities
- 7.3 High severity
- 7.8 High severity
- 7.5 High severity
- 8.1 High severity
- 7.3 High severity
- 8.4 High severity
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