[FD] Local File Inclusion in Theme My Login 6.3.9 provides access to arbitrary files and could facilitate arbitrary code execution (WordPress plugin)

[dxw Security <security@xxxxxxx>]

Details
================
Software: Theme My Login
Version: 6.3.9
Homepage: http://wordpress.org/plugins/theme-my-login/
Advisory report: https://security.dxw.com/advisories/lfi-in-theme-my-login/
CVE: Awaiting assignment
CVSS: 6.5 (Medium; AV:N/AC:L/Au:S/C:P/I:P/A:P)

Description
================
Local File Inclusion in Theme My Login 6.3.9 provides access to arbitrary files 
and could facilitate arbitrary code execution

Vulnerability
================
Users able to edit posts are able to use a shortcode which is vulnerable to 
local file inclusion. This can allow an attacker read-only access to any 
non-PHP file, or the ability to execute arbitrary code if they can upload a PHP 
file.

Proof of concept
================
Depending on the exact path to your WordPress installation, the following may 
or may not cause the contents of /etc/passwd to be displayed (adjust as 
necessary):
[theme-my-login login_template=\"../../../../../../../../../etc/passwd\"]

Mitigations
================
Upgrade to version 6.3.10 or later.
Please note that while the changelog for version 6.3.10 labels this as a 
potential vulnerability, this plugin is in fact categorically vulnerable as 
described above. Users of this plugin should not consider version 6.3.10 to be 
an optional or low-priority upgrade.

Disclosure policy
================
dxw believes in responsible disclosure. Your attention is drawn to our 
disclosure policy: https://security.dxw.com/disclosure/

Please contact us on security@xxxxxxx to acknowledge this report if you 
received it via a third party (for example, plugins@xxxxxxxxxxxxx) as they 
generally cannot communicate with us on your behalf.

This vulnerability will be published if we do not receive a response to this 
report with 14 days.

Timeline
================

2014-06-10: Discovered
2014-06-25: Reported to WP.org; contact information requested from author
2014-06-26: Reported to author
2014-06-27: Author reports fixed
2014–6-30: Published



Discovered by dxw:
================
Tom Adams
Please visit security.dxw.com for more information.
          


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