Security Bulletin: Apache Tomcat is vulnerable to HTTP request smuggling (CVE-2022-42252)

Summary

Apache Tomcat is vulnerable to HTTP request smuggling, caused by the failure to reject a request containing an invalid Content-Length header when configured to ignore invalid HTTP headers via setting rejectIllegalHeader to false. By sending a specially-crafted request, an attacker could exploit this vulnerability to poison the web cache, bypass web application firewall protection, and conduct XSS attacks.

Vulnerability Details

CVEID:CVE-2022-42252
**DESCRIPTION:**Apache Tomcat is vulnerable to HTTP request smuggling, caused by the failure to reject a request containing an invalid Content-Length header when configured to ignore invalid HTTP headers via setting rejectIllegalHeader to false. By sending a specially-crafted request, an attacker could exploit this vulnerability to poison the web cache, bypass web application firewall protection, and conduct XSS attacks.
CVSS Base score: 4.8
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/239171 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N)

Affected Products and Versions

Remediation/Fixes

Upgrade to any of 6.2.7.19, 7.0.5.14, 7.1.2.10, 7.2.3.3, 7.3.0.1 or higher.

Workarounds and Mitigations

None