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    CVE-2021-32678

    Nextcloud Server is a Nextcloud package that handles data storage. In versions prior to 19.0.13, 20.0.11, and 21.0.3, ratelimits are not applied to OCS API responses. This affects any OCS API controller (`OCSController`) using the `@BruteForceProtection` annotation. Risk depends on the installed applications on the Nextcloud Server, but could range from bypassing authentication ratelimits or spamming other Nextcloud users. The vulnerability is patched in versions 19.0.13, 20.0.11, and 21.0.3. No workarounds aside from upgrading are known to exist.

    Published:Jul 12, 2021
    Last Modified:Nov 21, 2024
    EPS:Jul 12, 2021
    EPSS Score:0.00302
    CVSS Score:3.7

    Affected Products

    Vendor
    Fedoraproject
    Product
    Fedora
    Vendor
    Nextcloud
    Product
    Nextcloud Server

    Exploits

    No exploit reference

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    References

    https://github.com/nextcloud/security-advisories/security/advisories/GHSA-48rx-3gmf-g74j
    https://github.com/nextcloud/server/pull/27329
    https://hackerone.com/reports/1214158
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BVZS26RDME2DYTKET5AECRIZDFUGR2AZ/
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/J63NBVPR2AQCAWRNDOZSGRY5II4WS2CZ/
    https://security.gentoo.org/glsa/202208-17
    https://github.com/nextcloud/security-advisories/security/advisories/GHSA-48rx-3gmf-g74j
    https://github.com/nextcloud/server/pull/27329
    https://hackerone.com/reports/1214158
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BVZS26RDME2DYTKET5AECRIZDFUGR2AZ/
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/J63NBVPR2AQCAWRNDOZSGRY5II4WS2CZ/
    https://security.gentoo.org/glsa/202208-17

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High