Train Scheduler App: Improper Control of Resource Identifiers
CVE-2022-3774 is a critical-severity improper control of resource identifiers vulnerability in Train Scheduler App from SourceCodester, with a CVSS 3.1 base score of 9.1 out of 10. It can be exploited remotely over the network by an unauthenticated attacker, without any action from a user. Affected Train Scheduler App versions: 1.0. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 1.5% chance of exploitation within 30 days, higher than 75% of scored CVEs.
Critical severity: a successful attack would have severe impact.
What to do
- Check which version of Train Scheduler App you run against the affected versions below, and install the vendor's latest release.
- 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 |
|---|---|---|---|
| SourceCodester | Train Scheduler App | 1.0 | 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
- 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:N/UI:N/S:U/C:N/I:H/A:H. Scored by NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 3.1 | 5.4 | Medium | CNA (vuldb.com) |
| CVSS 3.1 | 9.1 | Critical | NVD |
Official description
A vulnerability was found in SourceCodester Train Scheduler App 1.0 and classified as critical. Affected by this issue is some unknown functionality of the file /train_scheduler_app/?action=delete. The manipulation of the argument id leads to improper control of resource identifiers. The attack may be launched remotely. The identifier of this vulnerability is VDB-212504.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Improper Control of Resource Identifiers
The product receives input from an upstream component, but it does not restrict or incorrectly restricts the input before it is used as an identifier for a resource that may be outside the intended control sphere.
More Improper Control of Resource Identifiers vulnerabilities (CWE-99)
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: poc, automatable: no, technical impact: partial).
- Record last changed materially (score, affected products, status or references).
References
Third-party and government advisories
- vuldb.com/?id.212504Third Party Advisory
Technical write-ups (may include proof of concept)
- packetstormsecurity.com/files/169604/Train-Scheduler-App-1.0-Insecure-Direct-Object-Reference.htmlExploit, Third Party Advisory
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