CVE-2021-37786 Denial of service in n/a
Attackers can cause a denial of service in iOS COVID Certificate apps by scanning a crafted QR code, requiring physical proximity.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-37786?
CVE-2021-37786 is a medium-severity denial of service vulnerability in n/a, published on 27 Sep 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Certain Federal Office of Information Technology Systems and Telecommunication FOITT products are affected by improper handling of exceptional conditions. This affects COVID Certificate App IOS 2.2.0 and below affected, patch in progress and COVID Certificate Check App IOS 2.2.0 and below affected, patch in progress. A denial of service (physically proximate) could be caused by scanning a crafted QR code.
Weakness: CWE-755
Which versions are affected by CVE-2021-37786?
It affects 1 product.
Products include Bag Covid Certificate.
How do I fix CVE-2021-37786?
No fix has been published for CVE-2021-37786 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2021-37786 being exploited?
There is no known exploitation of CVE-2021-37786 in the wild and no public exploit code.
Sources
Also known as GHSA-wwmh-65qv-chwq.