CVE-2023-45660

Require strict cookies for image proxy requests in Nextcloud Mail

CVSS 4.3 MEDIUMEPSS 0.6%CWE-918

Vexday Risk Score

13Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 4.3EPSS 0.6%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

16 Oct 2023Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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.

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

Affected products

nextcloud · security-advisories

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References

https://github.com/nextcloud/mail/pull/8459 https://github.com/nextcloud/security-advisories/security/advisories/GHSA-8j9x-fmww-qr37 https://hackerone.com/reports/1895874