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Submitty 20.04.01 Cross Site Scripting

Submitty 20.04.01 Cross Site Scripting
Posted May 19, 2020
Authored by humblelad

Submitty version 20.04.01 suffers from a persistent cross site scripting vulnerability.

tags | exploit, xss
advisories | CVE-2020-12882
SHA-256 | b3d5462d338544c2d793cb1f54c9f76dc20b933490c403b7e271fdc8a80afaf7

Submitty 20.04.01 Cross Site Scripting

Change Mirror Download
# Exploit Title: Submitty 20.04.01 - Persistent Cross-Site Scripting
# Date: 2020-05-15
# Exploit Author: humblelad
# Vendor Homepage: http://submitty.org/
# Software Link: https://github.com/Submitty/Submitty/releases
# Version: 20.04.01
# Tested on: Mac Os Catalina
# CVE : CVE-2020-12882


Description:
Submitty through 20.04.01 allows XSS via upload of an SVG document, as demonstrated
by an attack by a Student against a Teaching Fellow.This vulnerability can potentially enable any student to takeover the account of TA if they open the attachment as the cookie gets exposed.

1.As student login, via student:student

2.Go here http://localhost:1501/s20/tutorial/gradeable/01_simple_python (as ex.)

3.In the new submission upload the malicious .svg file with any xss payload.



Login as ta and open the same for grading. The XSS gets triggered alerting the cookies.
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