CVE-2023-41318

Unsafe media served inline on download endpoints in matrix-media-repo

Description

matrix-media-repo is a highly customizable multi-domain media repository for the Matrix chat ecosystem. In affected versions an attacker could upload a malicious piece of media to the media repo, which would then be served with `Content-Disposition: inline` upon download. This vulnerability could be leveraged to execute scripts embedded in SVG content. Commits `77ec235` and `bf8abdd` fix the issue and are included in the 1.3.0 release. Operators should upgrade to v1.3.0 as soon as possible. Operators unable to upgrade should override the `Content-Disposition` header returned by matrix-media-repo as a workaround.

Category

4.1
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.50%
Vendor Advisory github.com
Affected: turt2live matrix-media-repo
Published at:
Updated at:

References

Link Tags
https://github.com/turt2live/matrix-media-repo/security/advisories/GHSA-5crw-6j7v-xc72 vendor advisory
https://github.com/turt2live/matrix-media-repo/commit/77ec2354e8f46d5ef149d1dcaf25f51c04149137 patch
https://github.com/turt2live/matrix-media-repo/commit/bf8abdd7a5371118e280c65a8e0ec2b2e9bdaf59 patch
https://developer.mozilla.org/en-US/docs/Web/SVG/Element/script third party advisory

Frequently Asked Questions

What is the severity of CVE-2023-41318?
CVE-2023-41318 has been scored as a medium severity vulnerability.
How to fix CVE-2023-41318?
To fix CVE-2023-41318, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2023-41318 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2023-41318 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-41318?
CVE-2023-41318 affects turt2live matrix-media-repo.
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