E-invoice: Improper Protection for Outbound Error Messages and Alert Signals
CVE-2023-5443 is a high-severity improper protection for outbound error messages and alert signals vulnerability in E-invoice from EDM Informatics, 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. The record lists version 2.1 as the first without the flaw, so updating E-invoice to that release or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 0.54% 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 E-invoice to 2.1 or a later version.
- 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 |
|---|---|---|---|
| EDM Informatics | E-invoice | before 2.1 | 2.1 |
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.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 3.1 | 7.5 | High | CNA (usom.gov.tr) |
| CVSS 3.1 | 7.5 | High | NVD |
Official description
Improper Protection for Outbound Error Messages and Alert Signals vulnerability in EDM Informatics E-invoice allows Account Footprinting. This issue affects E-invoice: before 2.1.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Improper Protection for Outbound Error Messages and Alert Signals
Untrusted agents can disable alerts about signal conditions exceeding limits or the response mechanism that handles such alerts.
How developers prevent this class of flaw
- Alert signals generated by critical events should be protected from access by untrusted agents. Only hardware or trusted firmware modules should be able to alter the alert configuration.
More Improper Protection for Outbound Error Messages and Alert Signals vulnerabilities (CWE-1320)
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
- usom.gov.tr/bildirim/tr-23-0610Third Party Advisory
Other references
Recent Improper Protection for Outbound Error Messages and Alert Signals vulnerabilities
- 7.5 High severity
- 7.5 High severity
- 9.8 Critical severity
- 7.8 High severity
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