Bug 1026566 (CVE-2013-4508)

Summary: CVE-2013-4508 lighttpd: uses vulnerable cipher suites when SNI is used
Product: [Other] Security Response Reporter: Vincent Danen <vdanen>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED ERRATA QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: ccoleman, dmcphers, jialiu, lmeyer, matthias, tkramer
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2014-06-13 19:35:52 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 1026567, 1026568, 1026569    
Bug Blocks:    

Description Vincent Danen 2013-11-05 01:05:34 UTC 
The following flaw was reported [1] in lighttpd.  Currently a patch is in progress [2] but is not yet complete.

Lighttpd supported SNI (Server Name Indication) since version 1.4.24, and a typical SNI configuration would look like:

    $HTTP["Host"] == "example.com" {
        ssl.pemfile = "/etc/ssl/certs/example.com.pem"
    }
    $SERVER["socket"] == ":443" {
        ssl.engine = "enable"
        ssl.pemfile = "/etc/ssl/certs/default.pem"
        ssl.cipher-list = "HIGH"
    }

This configuration is vulnerable as it will use ssl.cipher-list = "DEFAULT" for "example.com",  which contains vulnerable cipher suites.

[1] http://download.lighttpd.net/lighttpd/security/lighttpd_sa_2013_01.txt
[2] http://download.lighttpd.net/lighttpd/security/lighttpd-1.4.33_fix_ssl_sni.patch
Comment 2 Vincent Danen 2013-11-05 01:07:45 UTC 
Created lighttpd tracking bugs for this issue:

Affects: fedora-all [bug 1026567]
Affects: epel-all [bug 1026568]
Comment 3 Vincent Danen 2014-06-13 19:35:52 UTC 
Fixed in:

lighttpd-1.4.34-1.el5.1
lighttpd-1.4.34-1.el6
lighttpd-1.4.34-3.fc19
lighttpd-1.4.34-3.fc20