Description
In Apache httpd 2.4.0 to 2.4.29, when mod_session is configured to forward its session data to CGI applications (SessionEnv on, not the default), a remote user may influence their content by using a "Session" header. This comes from the "HTTP_SESSION" variable name used by mod_session to forward its data to CGIs, since the prefix "HTTP_" is also used by the Apache HTTP Server to pass HTTP header fields, per CGI specifications.
Remediation
References
Related Vulnerabilities
Oracle Database Server Other Vulnerability (CVE-2006-7141)
Python Integer Overflow or Wraparound Vulnerability (CVE-2015-1283)
PHP Numeric Errors Vulnerability (CVE-2009-4418)
PHP NULL Pointer Dereference Vulnerability (CVE-2018-19935)
Oracle Database Server CVE-2009-1993 Vulnerability (CVE-2009-1993)