STRICT_SERVLET_COMPLIANCE must be set to true.
An XCCDF Rule
Description
<VulnDiscussion>Strict Servlet Compliance forces Tomcat to adhere to standards specifications including but not limited to RFC2109. RFC2109 sets the standard for HTTP session management. This setting affects several settings which primarily pertain to cookie headers, cookie values, and sessions. Cookies will be parsed for strict adherence to specifications. Note that changing a number of these default settings may break some systems, as some browsers are unable to correctly handle the cookie headers that result from a strict adherence to the specifications. This one setting changes the default values for the following settings: org.apache.catalina.core. ApplicationContext.GET_RESOURCE_REQUIRE_SLASH org.apache.catalina.core. ApplicationDispatcher.WRAP_SAME_OBJECT org.apache.catalina.core. StandardHostValve.ACCESS_SESSION org.apache.catalina.session. StandardSession.ACTIVITY_CHECK org.apache.catalina.session. StandardSession.LAST_ACCESS_AT_START org.apache.tomcat.util.http. ServerCookie.ALWAYS_ADD_EXPIRES org.apache.tomcat.util.http. ServerCookie.FWD_SLASH_IS_SEPARATOR org.apache.tomcat.util.http. ServerCookie.PRESERVE_COOKIE_HEADER org.apache.tomcat.util.http. ServerCookie.STRICT_NAMING The resourceOnlyServlets attribute of any Context element. The tldValidation attribute of any Context element. The useRelativeRedirects attribute of any Context element. The xmlNamespaceAware attribute of any Context element. The xmlValidation attribute of any Context element.</VulnDiscussion><FalsePositives></FalsePositives><FalseNegatives></FalseNegatives><Documentable>false</Documentable><Mitigations></Mitigations><SeverityOverrideGuidance></SeverityOverrideGuidance><PotentialImpacts></PotentialImpacts><ThirdPartyTools></ThirdPartyTools><MitigationControl></MitigationControl><Responsibility></Responsibility><IAControls></IAControls>
- ID
- SV-223002r961863_rule
- Severity
- Low
- References
- Updated
Remediation - Manual Procedure
From the Tomcat server as a privileged user:
Edit the /etc/systemd/system/tomcat.service file and either add or edit the org.apache.catalina.STRICT_SERVLET_COMPLIANCE setting.
Set the org.apache.catalina.STRICT_SERVLET_COMPLIANCE=true