CVE-2021-20747 Missing authorization in Retty App
A remote attacker can trick users into accessing arbitrary websites via the app's custom URL scheme due to improper authorization checks.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2021-20747?
CVE-2021-20747 is a medium-severity missing authorization vulnerability in Retty App, published on 14 Jul 2021. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
Improper authorization in handler for custom URL scheme vulnerability in Retty App for Android versions prior to 4.8.13 and Retty App for iOS versions prior to 4.11.14 allows a remote attacker to lead a user to access an arbitrary website via the vulnerable App.
Weakness: CWE-862
Which versions are affected by CVE-2021-20747?
It affects 1 product.
Products include Retty Retty.
How do I fix CVE-2021-20747?
No fix has been published for CVE-2021-20747 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-2021-20747 being exploited?
There is no known exploitation of CVE-2021-20747 in the wild and no public exploit code.
Other vulnerabilities in Retty App
Sources
Also known as GHSA-6669-c2mr-pv93.