CVE-2021-28090 Denial of service in n/a
Remote attackers can crash Tor directory authorities via assertion failure, causing denial of service for the network infrastructure.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2021-28090?
CVE-2021-28090 is a medium-severity denial of service vulnerability in Fedoraproject Fedora, published on 19 Mar 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Tor before 0.4.5.7 allows a remote attacker to cause Tor directory authorities to exit with an assertion failure, aka TROVE-2021-002.
Weakness: CWE-617
Which versions are affected by CVE-2021-28090?
It affects 2 products.
Products include Fedoraproject Fedora, Torproject Tor.
How do I fix CVE-2021-28090?
Upgrade to a fixed version.
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-2021-28090 being exploited?
There is no known exploitation of CVE-2021-28090 in the wild and no public exploit code.
Other vulnerabilities in Fedoraproject Fedora
Sources
Also known as DEBIAN-CVE-2021-28090, GHSA-79hx-qq8c-36qm, UBUNTU-CVE-2021-28090.