Debian: DSA-2579-1: apache2 security update

    Date30 Nov 2012
    CategoryDebian
    30
    Posted ByLinuxSecurity Advisories
    A vulnerability has been found in the Apache HTTPD Server: CVE-2012-4557
    
    - -------------------------------------------------------------------------
    Debian Security Advisory DSA-2579-1                   This email address is being protected from spambots. You need JavaScript enabled to view it.
    http://www.debian.org/security/                            Stefan Fritsch
    November 30, 2012                      http://www.debian.org/security/faq
    - -------------------------------------------------------------------------
    
    Package        : apache2
    Vulnerability  : Multiple issues
    Problem type   : remote
    Debian-specific: no
    CVE ID         : CVE-2012-4557 CVE-2012-4929
    Debian Bug     : 689936
    
    A vulnerability has been found in the Apache HTTPD Server:
    
    CVE-2012-4557
    
    	A flaw was found when mod_proxy_ajp connects to a backend
    	server that takes too long to respond. Given a specific
    	configuration, a remote attacker could send certain requests,
    	putting a backend server into an error state until the retry
    	timeout expired. This could lead to a temporary denial of
    	service.
    
    In addition, this update also adds a server side mitigation for the
    following issue:
    
    CVE-2012-4929
    
    	If using SSL/TLS data compression with HTTPS in an connection
    	to a web browser, man-in-the-middle attackers may obtain
    	plaintext HTTP headers. This issue is known as the "CRIME"
    	attack. This update of apache2 disables SSL compression by
    	default. A new SSLCompression directive has been backported
    	that may be used to re-enable SSL data compression in
    	environments where the "CRIME" attack is not an issue.
    	For more information, please refer to:
    	http://httpd.apache.org/docs/2.4/mod/mod_ssl.html#sslcompression
    
    For the stable distribution (squeeze), these problems have been fixed in
    version 2.2.16-6+squeeze10.
    
    For the testing distribution (wheezy), these problems have been fixed in
    version 2.2.22-12.
    
    For the unstable distribution (sid), these problems have been fixed in
    version 2.2.22-12.
    
    We recommend that you upgrade your apache2 packages.
    
    Further information about Debian Security Advisories, how to apply
    these updates to your system and frequently asked questions can be
    found at: http://www.debian.org/security/
    
    Mailing list: This email address is being protected from spambots. You need JavaScript enabled to view it.
    
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