CVE-2023-45660

Require strict cookies for image proxy requests in Nextcloud Mail

Description

Nextcloud mail is an email app for the Nextcloud home server platform. In affected versions a missing check of origin, target and cookies allows for an attacker to abuse the proxy endpoint to denial of service a third server. It is recommended that the Nextcloud Mail is upgraded to 2.2.8 or 3.3.0. There are no known workarounds for this vulnerability.

Category

4.3
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.13%
Vendor Advisory github.com
Affected: nextcloud security-advisories
Published at:
Updated at:

References

Link Tags
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-8j9x-fmww-qr37 vendor advisory
https://github.com/nextcloud/mail/pull/8459 patch issue tracking
https://hackerone.com/reports/1895874 third party advisory

Frequently Asked Questions

What is the severity of CVE-2023-45660?
CVE-2023-45660 has been scored as a medium severity vulnerability.
How to fix CVE-2023-45660?
To fix CVE-2023-45660, 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-2023-45660 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2023-45660 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-2023-45660?
CVE-2023-45660 affects nextcloud security-advisories.
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