Proself Enterprise/Standard Edition: Improper Authentication
CVE-2023-39415 is a high-severity improper authentication vulnerability in Proself Enterprise/Standard Edition from North Grid, 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 Proself Enterprise/Standard Edition versions: Ver5.61 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 1.03% chance of exploitation within 30 days, higher than 64% of scored CVEs.
High severity with no evidence of exploitation so far.
What to do
- Update proself_enterprise_standard_edition to 5.61 or a later version.
- Update proself_gateway_edition to 1.62 or a later version.
- Update proself_mail_sanitize_edition to 1.07 or a later version.
- Read the advisory on proself.jp 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 |
|---|---|---|---|
| North Grid | Proself Enterprise/Standard Edition | Ver5.61 and earlier | Not stated |
| North Grid | Proself Gateway Edition | Ver1.62 and earlier | Not stated |
| North Grid | Proself Mail Sanitize Edition | Ver1.07 and earlier | Not stated |
| Northgrid | proself_enterprise_standard_edition | before 5.61 | 5.61 |
| Northgrid | proself_gateway_edition | before 1.62 | 1.62 |
| Northgrid | proself_mail_sanitize_edition | before 1.07 | 1.07 |
| Northgrid | Proself | 1.07 and earlier; 1.62 and earlier; 5.61 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
- HighAll data handled by the component can be read.
- Integrity
- NoneNothing can be modified.
- Availability
- NoneAvailability is not affected.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N. Scored by NVD.
Official description
Improper authentication vulnerability in Proself Enterprise/Standard Edition Ver5.61 and earlier, Proself Gateway Edition Ver1.62 and earlier, and Proself Mail Sanitize Edition Ver1.07 and earlier allow a remote unauthenticated attacker to log in to the product's Control Panel and perform an unintended operation.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Improper Authentication
When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.
How developers prevent this class of flaw
- Use an authentication framework or library such as the OWASP ESAPI Authentication feature.
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: yes, technical impact: partial).
- Record last changed materially (score, affected products, status or references).
References
Third-party and government advisories
- jvn.jp/en/jp/JVN19661362/Third Party Advisory
Other vulnerabilities in Proself Enterprise/Standard Edition
- 7.5 High severity
- 7.2 High severity
Recent Improper Authentication vulnerabilities
- 8.8 High severity
- 8.8 High severity
- 9.8 Critical severity
- 8.3 High severity
- 7.5 High severity
- 9.1 Critical severity
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