CVE-2023-29000

Nextcloud Desktop client does not verify received singed certificate in end-to-end encryption

Description

The Nextcloud Desktop Client is a tool to synchronize files from Nextcloud Server. Starting with version 3.0.0 and prior to version 3.7.0, by trusting that the server will return a certificate that belongs to the keypair of the user, a malicious server could get the desktop client to encrypt files with a key known to the attacker. This issue is fixed in Nextcloud Desktop 3.7.0. No known workarounds are available.

Category

5.4
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.57%
Vendor Advisory github.com
Affected: nextcloud security-advisories
Published at:
Updated at:

References

Link Tags
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-h82x-98q3-7534 vendor advisory
https://github.com/nextcloud/desktop/pull/4949 patch
https://hackerone.com/reports/1679267 permissions required

Frequently Asked Questions

What is the severity of CVE-2023-29000?
CVE-2023-29000 has been scored as a medium severity vulnerability.
How to fix CVE-2023-29000?
To fix CVE-2023-29000, 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-2023-29000 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2023-29000 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-2023-29000?
CVE-2023-29000 affects nextcloud security-advisories.
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