CVE-2021-37148 Request Smuggling - transfer encoding validation
An attacker can smuggle requests via improper header parsing in Apache Traffic Server, bypassing security controls.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2021-37148?
CVE-2021-37148 is a high-severity vulnerability in Apache Traffic Server, published on 3 Nov 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Improper input validation vulnerability in header parsing of Apache Traffic Server allows an attacker to smuggle requests. This issue affects Apache Traffic Server 8.0.0 to 8.1.2 and 9.0.0 to 9.0.1.
Weakness: CWE-20
Which versions are affected by CVE-2021-37148?
It affects 2 products.
Products include Apache Traffic Server, Debian Debian Linux.
How do I fix CVE-2021-37148?
Upgrade to a fixed version.
Is CVE-2021-37148 being exploited?
There is no known exploitation of CVE-2021-37148 in the wild and no public exploit code.
Other vulnerabilities in Apache Traffic Server
Sources
Also known as DEBIAN-CVE-2021-37148, GHSA-p9mw-v4q4-qhvj, UBUNTU-CVE-2021-37148.