CVE-2023-50717: NocoDB Allows Preview of File with Dangerous Content
Summary --- Attacker can upload a html file with malicious content. If user tries to open that file in browser malicious scripts can be executed leading Stored XSS(Cross-Site Script) attack.
PoC --- NocoDB was configured using the Release Binary Noco-macos-arm64, and nocodb version 0.202.9 (currently the latest version) was used. binary hash infos: md5(164b727f287af56168bc16fba622d0b4) / sha256(43e8e97f4c5f5330613abe071a359f84e4514b7186f92954b678087c37b7832e) <img width="665" alt="image" src="https://user-images.githubusercontent.com/86613161/287472673-aeb60a02-2080-429f-8583-9f130ab62779.png">
1. Run the binary to start the server and access the arbitrary table dashboard. <img width="830" alt="image" src="https://user-images.githubusercontent.com/86613161/287472852-98b2286e-ad66-45bf-b503-63780619d775.png">
Here, used the default Features table.
2. Click + in the table field header to add an attachment field. <img width="1173" alt="image" src="https://user-images.githubusercontent.com/86613161/287472936-98a67213-a547-4e71-915c-d2a43300530b.png">
3. Click the Add File(s) button to select and upload files.
<img width="1132" alt="image" src="https://user-images.githubusercontent.com/86613161/287473041-0801ff39-e48c-4746-8518-be825bfd5533.png">
Here, test.html containing <script>alert(document.domain)</script> was uploaded.
4. Check the uploaded file path. <img width="1163" alt="image" src="https://user-images.githubusercontent.com/86613161/287473337-b1c7c781-2fb5-4bd0-b464-dbd3d4158f04.png"
5. Access the uploaded file path. <img width="1201" alt="image" src="https://user-images.githubusercontent.com/86613161/287473278-410f9228-58e3-4ee4-b111-70cdbffa9ed5.png">
When the file path is accessed, the <script>alert(document.domain)</script> script statement contained in the file is executed and the server host appears in the alert message.
Impact --- This allows remote attacker to execute JavaScript code in the context of the user accessing the vector. An attacker could have used this vulnerability to execute requests in the name of a logged-in user or potentially collect information about the attacked user by displaying a malicious form.
Other sources
NocoDB is software for building databases as spreadsheets. Starting in verson 0.202.6 and prior to version 0.202.10, an attacker can upload a html file with malicious content. If user tries to open that file in browser malicious scripts can be executed leading stored cross-site scripting attack. This allows remote attacker to execute JavaScript code in the context of the user accessing the vector. An attacker could have used this vulnerability to execute requests in the name of a logged-in user or potentially collect information about the attacked user by displaying a malicious form. Version 0.202.10 contains a patch for the issue.
— NVD
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2023-50717?
CVE-2023-50717 has been classified as a high-severity vulnerability due to the potential for stored XSS attacks.
How do I fix CVE-2023-50717?
To mitigate CVE-2023-50717, upgrade NocoDB to version 0.202.10 or later.
What kind of attack is associated with CVE-2023-50717?
CVE-2023-50717 is associated with a stored XSS (Cross-Site Scripting) attack.
What versions of NocoDB are affected by CVE-2023-50717?
CVE-2023-50717 affects NocoDB versions from 0.202.6 to 0.202.9 inclusive.
Can an attacker exploit CVE-2023-50717 without access to the system?
Yes, an attacker can exploit CVE-2023-50717 by uploading a malicious HTML file, allowing execution of scripts when opened by a user.