RHSA-2010:0175: Low: httpd security, bug fix, and enhancement update

The Apache HTTP Server is a popular web server.A use-after-free flaw was discovered in the way the Apache HTTP Serverhandled request headers in subrequests. In configurations where subrequestsare used, a multithreaded MPM (Multi-Processing Module) could possibly leakinformation from other requests in request replies. (CVE-2010-0434)This update also fixes the following bug: a bug was found in the moddav module. If a PUT request for an existing file failed, that file would be unexpectedly deleted and a "Could not getnext bucket brigade" error logged. With this update, failed PUT requests nolonger cause moddav to delete files, which resolves this issue.(BZ#572932)As well, this update adds the following enhancement: with the updated openssl packages from RHSA-2010:0163 installed, modssl will refuse to renegotiate a TLS/SSL connection with an unpatched clientthat does not support RFC 5746. This update adds the"SSLInsecureRenegotiation" configuration directive. If this directive isenabled, modssl will renegotiate insecurely with unpatched clients.(BZ#575805)Refer to the following Red Hat Knowledgebase article for more details aboutthe changed modssl behavior: http://kbase.redhat.com/faq/docs/DOC-20491 All httpd users should upgrade to these updated packages, which containbackported patches to correct these issues and add this enhancement. Afterinstalling the updated packages, the httpd daemon must be restarted for theupdate to take effect.