CVE-2020-9481 Denial of service in ATS
Attackers can cause denial of service in Apache Traffic Server via HTTP/2 slow read attacks, requiring administrators to upgrade the server software.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2020-9481?
CVE-2020-9481 is a high-severity denial of service vulnerability in Apache Traffic Server, published on 27 Apr 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Apache ATS 6.0.0 to 6.2.3, 7.0.0 to 7.1.9, and 8.0.0 to 8.0.6 is vulnerable to a HTTP/2 slow read attack.
Weakness: CWE-400
Which versions are affected by CVE-2020-9481?
It affects 2 products.
Products include Apache Traffic Server, Debian Debian Linux.
How do I fix CVE-2020-9481?
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-2020-9481 being exploited?
There is no known exploitation of CVE-2020-9481 in the wild and no public exploit code.
Other vulnerabilities in Apache Traffic Server
Sources
Also known as DEBIAN-CVE-2020-9481, GHSA-p73f-98x4-6v7q, UBUNTU-CVE-2020-9481.