PT-2021-19850 · Nextcloud+2 · Nextcloud Server+2

Lukasreschkenc · Published 2021-07-12 · Updated 2022-10-26 · CVE-2021-32678

Positive Technologies (AI Summary)

CVSS v3.1

5.3

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Nextcloud Server versions prior to 19.0.13 Nextcloud Server versions prior to 20.0.11 Nextcloud Server versions prior to 21.0.3

Description The issue affects Nextcloud Server, a package that handles data storage. In the affected versions, ratelimits are not applied to OCS API responses, which can be exploited by affecting any OCS API controller (OCSController) using the @BruteForceProtection annotation. The risk depends on the installed applications on the Nextcloud Server and could range from bypassing authentication ratelimits to spamming other Nextcloud users.

Recommendations For versions prior to 19.0.13, update to version 19.0.13 or later. For versions prior to 20.0.11, update to version 20.0.11 or later. For versions prior to 21.0.3, update to version 21.0.3 or later.

Fix

Improper Restriction of Excessive Authentication Attempts

Weakness Enumeration

CWE-799

CWE-307

Related Identifiers

ALT-PU-2021-3108

ALT-PU-2021-3224

CVE-2021-32678

GHSA-48RX-3GMF-G74J

OPENSUSE-SU-2021:1068-1

OPENSUSE-SU-2021_1068-1

Affected Products

Alt Linux

Nextcloud Server

Suse

References · 40

• https://github.com/nextcloud/server/pull/27329 · Patch
• https://osv.dev/vulnerability/openSUSE-SU-2021:1068-1 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-32678 · Security Note
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BVZS26RDME2DYTKET5AECRIZDFUGR2AZ · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/J63NBVPR2AQCAWRNDOZSGRY5II4WS2CZ · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-32678 · Vendor Advisory
• https://security.gentoo.org/glsa/202208-17 · Vendor Advisory
• https://github.com/nextcloud/security-advisories/security/advisories/GHSA-48rx-3gmf-g74j · Note
• https://bugzilla.suse.com/1188256 · Note
• https://suse.com/security/cve/CVE-2021-32726 · Note
• https://suse.com/security/cve/CVE-2020-8294 · Note
• https://bugzilla.suse.com/1181804 · Note
• https://suse.com/security/cve/CVE-2021-32680 · Note
• https://suse.com/security/cve/CVE-2021-32725 · Note
• https://t.me/cvenotify/17446 · Telegram Post