• Debian 11 is approaching its end-of-life (vendor EOL date - August 31, 2026). Plesk Obsidian 18.0.80 will be the last release to support it.
    If you are running Plesk Obsidian on Debian 11, we recommend you upgrade those servers to Debian 12 using our dist-upgrade tool.
  • We plan to deprecate and remove the support for XML RPC protocol versions earlier than 1.6.9.1 in Plesk Obsidian 18.0.82. We strongly recommend that you update all existing integrations using earlier versions of the XML RPC protocol to comply with the version 1.6.9.1 specification.

Plesk PCI 2 Compliance - Session Fixation

M

md3vxx

Guest
Does anyone know how to correctly disable session fixation within Plesk?

I have defined:

session.use_cookies = 1
session.use_only_cookies = 1

Within /usr/local/psa/admin/conf/php.ini and restarted the Plesk server service:

/etc/init.d/sw-cp-server restart

But Plesk continues to be vulnerable:

REQUEST https://my.server.net:8443/?PHPSESSID=0123456789abcdef0123456789abcdef

GET /?PHPSESSID=0123456789abcdef0123456789abcdef HTTP/1.1
Host: my.server.net:8443
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2.12) Gecko/20101026 Firefox/3.6.12 ( .NET CLR 3.5.30729)
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: en-us,en;q=0.5
Accept-Encoding: gzip,deflate
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7
Keep-Alive: 115
Connection: keep-alive
Cookie: PHPSESSID=0123456789abcdef0123456789

HTTP/1.1 200 OK
Transfer-Encoding: chunked
Expires: Thu, 16 Dec 2010 11:47:58 GMT, Thu, 19 Nov 1981 08:52:00 GMT
Cache-Control: max-age=2592000, post-check=0, pre-check=0, no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Last-Modified: Tue, 16 Nov 2010 11:47:58 GMT
P3P: CP="NON COR CURa ADMa OUR NOR UNI COM NAV STA"
Set-Cookie: PHPSESSID=0123456789abcdef0123456789abcdef; path=/
Pragma: no-cache
Content-Type: text/html
Date: Tue, 16 Nov 2010 11:47:58 GMT
Server: sw-cp-server/1.0.0

As you can see the server fixes the cookie (Set-Cookie) ssent by the client. You can run this server using the Firefox Live Headers plugin.

I am writing a PCI 2.0 compliance document for Plesk based on the original, http://www.md3v.com/pci-compliance-for-parallels-plesk, but am unable to resolve this issue.

Christopher.
 
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