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Re: phpMyAdmin 3.3.5 / 2.11.10 <= Cross Site Scripting (XSS) Vulnerability


From: Christian Sciberras <uuf6429 () gmail com>
Date: Wed, 25 Aug 2010 21:35:47 +0200

After looking into several sources, I've found the following:

6. IMPACT

Attackers can compromise currently logged-in user session and inject
arbitrary SQL statements (CREATE,INSERT,UPDATE,DELETE)
via crafted XSS payloads.


Which I presume means it affects the system only with a registered (and a
logged in) account.

I don't mean to boss you or anyone around, but why wasn't that detail well
written around?
Surely I won't risk wasting time fixing a possible bad patch when it doesn't
affect my install in the least (since it's only me that is using
phpMyAdmin).

I'm usually quite paranoid about security, but I don't  want to risk wasting
unnecessary time espeially considering it doesn't affect my security at all.

I'm not trying to nitpick or anything, but if I were you, I'd make it a
point to make the real impact well known, unless the vulnerabilities have
been published in the interest of  popularity rather than true concern.


Cheers,
Christian Sciberras.



On Wed, Aug 25, 2010 at 8:29 PM, YGN Ethical Hacker Group <lists () yehg net>wrote:

Did you read the advisory that contains vendor advisory link -
http://www.phpmyadmin.net/home_page/security/PMASA-2010-5.php ?




On Sat, Aug 21, 2010 at 12:46 AM, Christian Sciberras <uuf6429 () gmail com>
wrote:
Since I didn't see this mentioned even on their website, (phpmyadmin.net),
I
would like to ask, are these vulnerabilities existent in world-public OR
registered users part (OR both)?

Regards,
Chris.






On Fri, Aug 20, 2010 at 6:32 PM, YGN Ethical Hacker Group <
lists () yehg net>
wrote:



==============================================================================
 phpMyAdmin 3.3.5 / 2.11.10 <= Cross Site Scripting (XSS) Vulnerability


==============================================================================


1. OVERVIEW

The phpMyAdmin web application was vulnerable to Cross Site Scripting
vulnerability.


2. PRODUCT DESCRIPTION

phpMyAdmin is a free software tool written in PHP intended to handle
the administration of MySQL over the World Wide Web.
phpMyAdmin supports a wide range of operations with MySQL.
The most frequently used operations are supported by the user
interface (managing databases, tables, fields, relations,
indexes, users, permissions, etc), while you still have the ability to
directly execute any SQL statement.


3. VULNERABILITY DESCRIPTION

Some URLs in phpMyAdmin do not properly escape user inputs that lead
to cross site scripting vulnerability.
For more information about this kind of vulnerability, see OWASP Top
10 - A2, WASC-8 and
CWE-79: Improper Neutralization of Input During Web Page Generation
('Cross-site Scripting').


4. VERSIONS AFFECTED

phpMyAdmin 3.3.5 and lower
phpMyAdmin 2.11.10  and lower


5. PROOF-OF-CONCEPT/EXPLOIT



http://yehg.net/lab/pr0js/advisories/phpmyadmin/3.3.5/xss/db_sql.php-01.jpg


http://yehg.net/lab/pr0js/advisories/phpmyadmin/3.3.5/xss/db_sql.php-02.jpg


http://yehg.net/lab/pr0js/advisories/phpmyadmin/3.3.5/xss/db_structure.php-01.jpg


http://yehg.net/lab/pr0js/advisories/phpmyadmin/3.3.5/xss/db_structure.php-02.jpg


http://yehg.net/lab/pr0js/advisories/phpmyadmin/3.3.5/xss/server_databases.php-01.jpg


http://yehg.net/lab/pr0js/advisories/phpmyadmin/3.3.5/xss/server_databases.php-02.jpg


http://yehg.net/lab/pr0js/advisories/phpmyadmin/3.3.5/xss/server_privileges.php-01.jpg


http://yehg.net/lab/pr0js/advisories/phpmyadmin/3.3.5/xss/server_privileges.php-02.jpg

http://yehg.net/lab/pr0js/advisories/phpmyadmin/3.3.5/xss/sql.php-01.jpg

http://yehg.net/lab/pr0js/advisories/phpmyadmin/3.3.5/xss/sql.php-02.jpg

And full list of URLs (of both <probably> unexploitable/exploitable)
that fail to html escape user inputs:

UR: http://target/phpmyadmin/db_search.php
Affected Parameter(s):  field_str

URL: http://target/phpmyadmin/db_sql.php
Affected Parameter(s):  QUERY_STRING, delimiter

URL: http://target/phpmyadmin/db_structure.php
Affected Parameter(s): sort

URL:  http://target/phpmyadmin/js/messages.php
Affected Parameter(s): db

URL: http://target/phpmyadmin/server_databases.php
Affected Parameter(s): sort_by

URL: http://target/phpmyadmin/server_privileges.php
Affected Parameter(s): QUERY_STRING, checkprivs, dbname,
pred_tablename, selected_usr[], tablename , username

URL: http://target/phpmyadmin/setup/config.php
Affected Parameter(s): DefaultLang

URL: http://target/phpmyadmin/sql.php
Affected Parameter(s): QUERY_STRING, cpurge,
goto,purge,purgekey,table,zero_rows

URL: http://target/phpmyadmin/tbl_replace.php
Affected (Dynamic) Parameter(s):
fields[multi_edit][0][f7235a61fdc3adc78d866fd8085d44db],
fields_name[multi_edit][0][349e686330723975502e9ef4f939a5ac]


6. IMPACT

Attackers can compromise currently logged-in user session and inject
arbitrary SQL statements (CREATE,INSERT,UPDATE,DELETE)
via crafted XSS payloads.


7. SOLUTION

Upgrade to phpMyAdmin 3.3.5.1 or 2.11.10.1


8. VENDOR

phpMyAdmin (http://www.phpmyadmin.net)


9. CREDIT

This vulnerability was discovered by Aung Khant, http://yehg.net, YGN
Ethical Hacker Group, Myanmar.


10. DISCLOSURE TIME-LINE

08-09-2010: vulnerability discovered
08-10-2010: notified vendor
08-20-2010: vendor released fix
08-20-2010: vulnerability disclosed


11. REFERENCES

Vendor Advisory URL:
http://www.phpmyadmin.net/home_page/security/PMASA-2010-5.php
Original Advisory URL:


http://yehg.net/lab/pr0js/advisories/phpmyadmin/[phpmyadmin-3.3.5]_cross_site_scripting(XSS)<http://yehg.net/lab/pr0js/advisories/phpmyadmin/[phpmyadmin-3.3.5]_cross_site_scripting%28XSS%29>
Previous Release:
http://www.phpmyadmin.net/home_page/security/PMASA-2008-6.php
XSS FAQ: http://www.cgisecurity.com/xss-faq.html
OWASP Top 10:
http://www.owasp.org/index.php/Category:OWASP_Top_Ten_Project
CWE-79: http://cwe.mitre.org/data/definitions/79.html


#yehg [08-20-2010]



---------------------------------
Best regards,
YGN Ethical Hacker Group
Yangon, Myanmar
http://yehg.net
Our Lab | http://yehg.net/lab
Our Directory | http://yehg.net/hwd

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Charter: http://lists.grok.org.uk/full-disclosure-charter.html
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