CVE-2023-23942

Self reflected HTML injection in Desktop client

Description

The Nextcloud Desktop Client is a tool to synchronize files from a Nextcloud Server with your computer. Versions prior to 3.6.3 are missing sanitisation on qml labels which are used for basic HTML elements such as `strong`, `em` and `head` lines in the UI of the desktop client. The lack of sanitisation may allow for javascript injection. It is recommended that the Nextcloud Desktop Client is upgraded to 3.6.3. There are no known workarounds for this issue.

Category

5.4
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.81% Top 30%
Vendor Advisory github.com
Affected: nextcloud security-advisories
Published at:
Updated at:

References

Link Tags
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-64qc-vf6v-8xgg vendor advisory
https://github.com/nextcloud/desktop/pull/5233 patch
https://hackerone.com/reports/1788598 third party advisory permissions required

Frequently Asked Questions

What is the severity of CVE-2023-23942?
CVE-2023-23942 has been scored as a medium severity vulnerability.
How to fix CVE-2023-23942?
To fix CVE-2023-23942, 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-2023-23942 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2023-23942 is being actively exploited. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-23942?
CVE-2023-23942 affects nextcloud security-advisories.
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