CVE-2021-33831 Missing authorization in n/a
Attackers can create excessive random users to disrupt infection tracing in the TH Wildau COVID-19 Contact Tracing application.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-33831?
CVE-2021-33831 is a medium-severity missing authorization vulnerability in n/a, published on 7 Sep 2021. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
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.
Weakness: CWE-770
Which versions are affected by CVE-2021-33831?
It affects 1 product.
Products include Th-Wildau Covid-19 Contact Tracing.
How do I fix CVE-2021-33831?
No fix has been published for CVE-2021-33831 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2021-33831 being exploited?
There is no known exploitation of CVE-2021-33831 in the wild and no public exploit code.
Public exploit code: 1 proofs of concept on GitHub.
Sources
Also known as GHSA-5mj3-rrxf-hqrv.