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OpenAdvisories
Low · 3.5 CVE-2023-28835 EUVD-2023-32467

Insecure randomness for default password in nextcloud

Published Mar 30, 2023 · Updated Feb 11, 2025 · Assigned by GitHub_M

Description

Nextcloud server is an open source home cloud implementation. In affected versions the generated fallback password when creating a share was using a weak complexity random number generator, so when the sharer did not change it the password could be guessable to an attacker willing to brute force it. It is recommended that the Nextcloud Server is upgraded to 24.0.10 or 25.0.4. This issue only affects users who do not have a password policy enabled, so enabling a password policy is an effective mitigation for users unable to upgrade.

Affected products

VendorProductAffectedFixed
nextcloud security-advisories < 24.0.10, >= 25.0.0, < 25.0.4 —

References