Resource exhaustion in Th-Wildau Covid-19 Contact Tracing
CVE-2021-33831
api/account/register in the TH Wildau COVID-19 Contact Tracing application through 2021-09-01 has Incorrect Access Control. An attacker can interfere with tracing of infection chains by creating 500 random users within 2500 seconds.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.020 (80.2th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 80th percentile — 80.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.020 · newest: 0.020 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.th-wildau.de/studieren-weiterbilden/neuigkeiten-und-veranstaltungen/corona/ (Vendor Advisory)
- github.com/lanmarc77/CVE-2021-33831 (Third Party Advisory)
Frequently asked questions
- What is CVE-2021-33831?
- CVE-2021-33831 is a medium-severity vulnerability in Th-Wildau Covid-19 Contact Tracing, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 6.5/10. Published 2021-09-07.
- How severe is CVE-2021-33831?
- Medium severity. CVSS v3 base score is 6.5 out of 10.
- Is CVE-2021-33831 known to be exploited?
- 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.