Nextcloud Server DNS pin middleware can be tricked into DNS rebinding allowing SSRF
CVE-2023-48306
9.8CRITICAL
What is CVE-2023-48306?
Nextcloud Server allows data storage through its open-source cloud platform, but a vulnerability in its DNS pin middleware enables attackers to carry out DNS rebinding attacks, which could result in Server-Side Request Forgery (SSRF). The flaw affects numerous versions of both Nextcloud Server and Nextcloud Enterprise Server prior to the latest security updates. Users are advised to upgrade to the patched versions to mitigate risks, as no effective workarounds are available.
Affected Version(s)
security-advisories >= 22.0.0, < 22.2.10.16 < 22.0.0, 22.2.10.16
security-advisories >= 23.0.0, < 23.0.12.11 < 23.0.0, 23.0.12.11
security-advisories >= 24.0.0, < 24.0.12.7 < 24.0.0, 24.0.12.7