06-28-2017 02:37 AM - edited 06-28-2017 02:38 AM
<IfModule headers_module> Header unset Etag FileETag none </IfModule>
to /.../Lev1/Web/WebServer/conf/httpd.conf and restart the web server.
Disclaimer: I have no idea if or how that might affect the SAS webapps.
06-28-2017 03:24 AM
Actually we wanted to remove Etag header information, I tried to add without if and with if, still it is displaying the Etag header information. I restarted Web Server after update.
06-28-2017 03:30 AM
That should work, but let me ask you, why are you wanted to remove Etag header information? We do not recommend making to do any changes in http.conf, unless they were suggested by technical support. What are you trying to achieve?
06-28-2017 03:34 AM
Our security team found that Apache Server ETag Header Information Disclosure, we have been asked to remediate, so we are disabling the Etag.
By the way your solution worked.
06-28-2017 03:47 AM
on most of the big companies, or companies where security is not a must, but also there are audit procedures, they have periodic checks specially meant for the web applications, where alarms may raise, such as the Poodle and others related to SSL.
As consultant, I received several request on several clients to close this vulnerability. Of course, for the first request, I did my homework checking with SAS Technical Support. Once I had the green light, I did the change and some validations, no problem.
I feel curious: how come that this vulnerability is not included in https://support.sas.com/en/security-bulletins.html and not included on a hotfix? Is it in use by any SAS Web application?
06-28-2017 04:03 AM
I do not have any details about this vulnerability, but I would suggest to open a technical support track and request that information. We have a specific procedure that we need to follow when contacting Product Security Incident Response Team (PSIRT), so only this team can respond.
06-28-2017 04:36 AM
Have a look at https://communities.sas.com/t5/SASware-Ballot-Ideas/Keep-3rd-party-software-current/idi-p/355959, where I suggested that SAS should keep the third-party web server software (apache and tomcat, both open-source) up-to-date, better than it is doing now.
06-28-2017 03:34 AM
How did you restart the web server? I recommend using
(issued as the SAS install user)
then check if no httpd process is still running (ps -e|grep httpd)
and then issue
(again as SAS install user)
06-28-2017 03:36 AM
I restarted web server as same way as recommended.
Thank you for your help
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