What is CVE-2021-33840?

CVE-2021-33840 is a high-severity vulnerability in Luca-App Luca, classified under Insufficient Verification of Data Authenticity. CVSS score: 7.5/10. Published 2021-06-04.

How severe is CVE-2021-33840?

High severity. CVSS v3 base score is 7.5 out of 10.

Is CVE-2021-33840 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Luca-App Luca

CVE-2021-33840

The server in Luca through 1.1.14 allows remote attackers to cause a denial of service (insertion of many fake records related to COVID-19) because Phone Number data lacks a digital signature.

EPSS: 0.009 (56.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Luca-app Luca
N/a — versions n/a

Weakness classification (CWE)

CWE-345 — Insufficient Verification of Data Authenticity

Public proof-of-concept exploits

References

cve@mitre.org (x_refsource_MISC, Vendor Advisory)
cve@mitre.org (Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2021-33840?: CVE-2021-33840 is a high-severity vulnerability in Luca-App Luca, classified under Insufficient Verification of Data Authenticity. CVSS score: 7.5/10. Published 2021-06-04.
How severe is CVE-2021-33840?: High severity. CVSS v3 base score is 7.5 out of 10.
Is CVE-2021-33840 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.