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GHSA-jxc4-54g3-j7vp
No affected components available
Impact
There is a Cross-Site-Scripting vulnerability when uploading certain file types as materials.
Patches
You should to update to Indico 3.3.10 as soon as possible. See the docs for instructions on how to update.
Please be aware that to apply the fix itself updating is sufficient, but to benefit from the strict Content-Security-Policy we now apply by default for file downloads, you need to update your webserver config in case you use nginx with Indico's STATIC_FILE_METHOD set to xaccelredirect and add the following line to the .xsf/indico/ location block (you can consult the Indico setup documentation for the full configuration snippet):
add_header Content-Security-Policy $upstream_http_content_security_policy;
Workarounds
- Use your webserver config to apply a strict CSP for material download endpoints.
- Only let trustworthy users create content (including material uploads, which speakers can typically do as well) on Indico.
For more information
If you have any questions or comments about this advisory:
- Open a thread in our forum
- Email us privately at indico-team@cern.ch
The vulnerability can be exploited over the network without needing physical access. It is easy for an attacker to exploit this vulnerability. An attacker needs basic access or low-level privileges. The attacker needs the user to perform some action, like clicking a link. The vulnerability can affect other systems as well, not just the initial system. There is a low impact on the confidentiality of the information. There is a low impact on the integrity of the data.
Exploitation attempts have been detected. Elevated vigilance and prompt remediation are advised.
The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.
We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.
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