CVE-2024-37313: nextcloud server Auth Bypass — Fix

Description

Nextcloud server is a self hosted personal cloud system. Under some circumstance it was possible to bypass the second factor of 2FA after successfully providing the user credentials. It is recommended that the Nextcloud Server is upgraded to 26.0.13, 27.1.8 or 28.0.4 and Nextcloud Enterprise Server is upgraded to 21.0.9.17, 22.2.10.22, 23.0.12.17, 24.0.12.13, 25.0.13.8, 26.0.13, 27.1.8 or 28.0.4.

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CVSS v3.1 Score

7.3

HIGH

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

Weakness Type (CWE)

CWE-287 Improper Authentication

Affected Products

Vendor	Product	Versions
nextcloud	nextcloud_server	21.0.0 — 21.0.9.17
nextcloud	nextcloud_server	22.0.0 — 22.2.10.22
nextcloud	nextcloud_server	23.0.0 — 23.0.12.17
nextcloud	nextcloud_server	24.0.0 — 24.0.12.13
nextcloud	nextcloud_server	25.0.0 — 25.0.13.8
nextcloud	nextcloud_server	26.0.0 — 26.0.13
nextcloud	nextcloud_server	26.0.0 — 26.0.13
nextcloud	nextcloud_server	27.0.0 — 27.1.8
nextcloud	nextcloud_server	27.0.0 — 27.1.8
nextcloud	nextcloud_server	28.0.0 — 28.0.4
nextcloud	nextcloud_server	28.0.0 — 28.0.4

References

Advisories & Patches

https://github.com/nextcloud/security-advisories/security/advisories/GHSA-9v72-9xv5-3p7c https://github.com/nextcloud/server/pull/44276 https://github.com/nextcloud/security-advisories/security/advisories/GHSA-9v72-9xv5-3p7c https://github.com/nextcloud/server/pull/44276

Other References

https://hackerone.com/reports/2419776 https://hackerone.com/reports/2419776

Frequently Asked Questions

What is CVE-2024-37313? +

Nextcloud server is a self hosted personal cloud system. Under some circumstance it was possible to bypass the second factor of 2FA after successfully providing the user credentials. It is recommended that the Nextcloud Server is upgraded to 26.0.13, 27.1.8 or 28.0.4 and Nextcloud Enterprise Server is upgraded to 21.0.9.17, 22.2.10.22, 23.0.12.17, 24.0.12.13, 25.0.13.8, 26.0.13, 27.1.8 or 28.0.4. It has a CVSS v3.1 base score of 7.3 (HIGH).

How severe is CVE-2024-37313? +

CVE-2024-37313 has a CVSS v3.1 score of 7.3 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2024-37313? +

CVE-2024-37313 affects products from nextcloud, specifically: nextcloud_server. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-37313? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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CVE-2024-37313