Resource management error in Apache Traffic Server - CVE-2020-9481
Published: April 28, 2020
Vulnerability identifier: #VU27375
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2020-9481
CWE-ID: CWE-399
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to the affected software is vulnerable to a HTTP/2 slow read attack. A remote attacker can send HTTP requests in pieces slowly, one at a time to a Web server and cause a denial of service condtion on the target system.
Affected software
Apache Traffic Server
trafficserver (Debian package)
trafficserver (Debian package)
How to mitigate CVE-2020-9481
Install updates from vendor's website.
Apache Traffic Server - addressed in versions 7.1.10, 8.0.7
trafficserver (Debian package) - update to 8.0.2+ds-1+deb10u2
trafficserver (Debian package) - update to 8.0.2+ds-1+deb10u2