Kunduz - Homework Helper App: Use of Hard-coded Cryptographic Key
CVE-2023-3632 is a critical-severity use of hard-coded cryptographic key vulnerability in Kunduz - Homework Helper App from Sifir Bes Education and Informatics, with a CVSS 3.1 base score of 9.8 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 6.2.3 as the first without the flaw, so updating Kunduz - Homework Helper App to that release or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 0.77% chance of exploitation within 30 days, higher than 56% of scored CVEs.
Critical severity: a successful attack would have severe impact.
What to do
- Update Kunduz - Homework Helper App to 6.2.3 or a later version.
- Update Kunduz to 6.2.3 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 |
|---|---|---|---|
| Sifir Bes Education and Informatics | Kunduz - Homework Helper App | before 6.2.3 | 6.2.3 |
| Kunduz | Kunduz | before 6.2.3 | 6.2.3 |
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
- 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:H/I:H/A:H. Scored by NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 3.1 | 9.8 | Critical | CNA (usom.gov.tr) |
| CVSS 3.1 | 9.8 | Critical | NVD |
Official description
Use of Hard-coded Cryptographic Key vulnerability in Sifir Bes Education and Informatics Kunduz - Homework Helper App allows Authentication Abuse, Authentication Bypass. This issue affects Kunduz - Homework Helper App: before 6.2.3.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Use of Hard-coded Cryptographic Key
The product uses a hard-coded, unchangeable cryptographic key.
How developers prevent this class of flaw
- Prevention schemes mirror that of hard-coded password storage.
More Use of Hard-coded Cryptographic Key vulnerabilities (CWE-321)
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: yes, technical impact: total).
- Record last changed materially (score, affected products, status or references).
References
Third-party and government advisories
- usom.gov.tr/bildirim/tr-23-0446Third Party Advisory
Other references
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