Scientific Linux Security Update : httpd on SL5.x i386/x86_64
Medium Nessus Plugin ID 60754
SynopsisThe remote Scientific Linux host is missing one or more security updates.
DescriptionCVE-2010-0408 httpd: mod_proxy_ajp remote temporary DoS
CVE-2010-0434 httpd: request header information leak
It was discovered that mod_proxy_ajp incorrectly returned an 'Internal Server Error' response when processing certain malformed requests, which caused the back-end server to be marked as failed in configurations where mod_proxy is used in load balancer mode. A remote attacker could cause mod_proxy to not send requests to back-end AJP (Apache JServ Protocol) servers for the retry timeout period (60 seconds by default) by sending specially crafted requests.
A use-after-free flaw was discovered in the way the Apache HTTP Server handled request headers in subrequests. In configurations where subrequests are used, a multithreaded MPM (Multi-Processing Module) could possibly leak information from other requests in request replies. (CVE-2010-0434)
This update also adds the following enhancement :
- with the updated openssl packages from RHSA-2010:0162 installed, mod_ssl will refuse to renegotiate a TLS/SSL connection with an unpatched client that does not support RFC 5746. This update adds the 'SSLInsecureRenegotiation' configuration directive. If this directive is enabled, mod_ssl will renegotiate insecurely with unpatched clients. (BZ#567980)
Refer to the following Red Hat Knowledgebase article for more details about the changed mod_ssl behavior:
After installing the updated packages, the httpd daemon must be restarted for the update to take effect.
SolutionUpdate the affected packages.