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Bug 1428434 - httpd ssl config includes unsafe advice
Summary: httpd ssl config includes unsafe advice
Keywords:
Status: CLOSED DUPLICATE of bug 1274890
Alias: None
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: httpd
Version: 7.3
Hardware: Unspecified
OS: Unspecified
unspecified
low
Target Milestone: rc
: ---
Assignee: Luboš Uhliarik
QA Contact: BaseOS QE - Apps
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2017-03-02 15:23 UTC by ripleymj
Modified: 2017-07-13 15:45 UTC (History)
2 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Environment:
Last Closed: 2017-07-13 15:45:15 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)

Description ripleymj 2017-03-02 15:23:21 UTC 
Description of problem:
When installing Apache httpd with mod_ssl, the delivered ssl.conf file includes unsafe advice suggesting to prefer RC4 to make encryption "speed-optimized", like such:

--------
#   Speed-optimized SSL Cipher configuration:
#   If speed is your main concern (on busy HTTPS servers e.g.),
#   you might want to force clients to specific, performance
#   optimized ciphers. In this case, prepend those ciphers
#   to the SSLCipherSuite list, and enable SSLHonorCipherOrder.
#   Caveat: by giving precedence to RC4-SHA and AES128-SHA
#   (as in the example below), most connections will no longer
#   have perfect forward secrecy - if the server's key is
#   compromised, captures of past or future traffic must be
#   considered compromised, too.
#SSLCipherSuite RC4-SHA:AES128-SHA:HIGH:MEDIUM:!aNULL:!MD5
#SSLHonorCipherOrder on 
--------

As RC4 seems to no longer be recommended for general use, perhaps this advice should be removed. This is by no means calling for wider removal of RC4, just withdrawing the endorsement of it as a speed optimization. This seems to have been incorporated upstream in 2015: http://svn.apache.org/viewvc/httpd/httpd/trunk/docs/conf/extra/httpd-ssl.conf.in?r1=1634736&r2=1679428

Version-Release number of selected component (if applicable):
Last seen on RHEL 7.3 with httpd-2.4.6-45 and mod_ssl-2.4.6_45

How reproducible:
Completely

Steps to Reproduce:
1. Install httpd and mod_ssl
2. Open /etc/httpd/conf.d/ssl.conf
3.

Actual results:
ssl.conf contains unsafe advice

Expected results:
ssl.conf contains sound advice out of the box about best current practices

Additional info:
Comment 3 Joe Orton 2017-07-13 15:45:15 UTC 

*** This bug has been marked as a duplicate of bug 1274890 ***
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