Secunia Security Advisory - NBBN has discovered some vulnerabilities in the DMSGuestbook plugin for WordPress, which can be exploited by malicious users to disclose sensitive information or to manipulate data, and by malicious people to conduct cross-site scripting and script insertion attacks.
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TITLE:
WordPress DMSGuestbook Plugin Multiple Vulnerabilities
SECUNIA ADVISORY ID:
SA28759
VERIFY ADVISORY:
http://secunia.com/advisories/28759/
CRITICAL:
Moderately critical
IMPACT:
Cross Site Scripting, Manipulation of data, Exposure of system
information, Exposure of sensitive information
WHERE:
>From remote
SOFTWARE:
DMSGuestbook 1.x (plugin for WordPress)
http://secunia.com/product/17463/
DESCRIPTION:
NBBN has discovered some vulnerabilities in the DMSGuestbook plugin
for WordPress, which can be exploited by malicious users to disclose
sensitive information or to manipulate data, and by malicious people
to conduct cross-site scripting and script insertion attacks.
1) Input passed to the "file" and "folder" parameters in the
WordPress installation's wp-admin/admin.php script (when "page" is
set to "dmsguestbook") is not properly sanitised before being used.
This can be exploited to display or edit arbitrary files through
directory traversal attacks.
Successful exploitation of this vulnerability requires valid
administrator credentials.
2) Input passed to the "gbmsg" parameter is not properly sanitised
before being stored. This can be exploited to insert arbitrary HTML
and script code, which is executed in a user's browser session in
context of an affected site when the malicious data is viewed.
Successful exploitation of this vulnerability requires that the
target user has valid administrator credentials.
3) Input passed to the "gbname", "gbemail", "gburl", and "gbmsg"
parameters is not properly sanitised before being returned to the
user. This can be exploited to execute arbitrary HTML and script code
in a user's browser session in context of an affected site.
The vulnerabilities are confirmed in version 1.8.0 and reported in
version 1.7.0. Other versions may also be affected.
SOLUTION:
Edit the source code to ensure that input is properly sanitised.
PROVIDED AND/OR DISCOVERED BY:
NBBN
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About:
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