Inconsistent interpretation of HTTP requests in Apache Traffic Server - CVE-2022-31778
Published: August 15, 2022
Vulnerability identifier: #VU66505
CSH Severity: Medium
CVSS v4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2022-31778
CWE-ID: CWE-444
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform HTTP request smuggling attacks.
The vulnerability exists due to improper validation of the Transfer-Encoding header. A remote attacker can send a specially crafted HTTP request to the server and smuggle arbitrary HTTP headers.
Successful exploitation of vulnerability may allow an attacker to poison HTTP cache and perform phishing attacks.
Affected software
Apache Traffic Server
Debian Linux
trafficserver (Debian package)
Debian Linux
trafficserver (Debian package)
How to mitigate CVE-2022-31778
Install updates from vendor's website.
Apache Traffic Server - update to 8.1.5
trafficserver (Debian package) - update to 8.1.5+ds-1~deb11u1
trafficserver (Debian package) - update to 8.1.5+ds-1~deb11u1