PT-2021-19898 · Nextcloud+2 · Nextcloud Server+2

Robottod · Published 2021-07-12 · Updated 2021-11-03 · CVE-2021-32741

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 is related to a lack of ratelimiting on the public share link mount endpoint, which may have allowed an attacker to enumerate potentially valid share tokens. There are no known workarounds or mentions of real-world incidents where this issue was exploited.

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

Weakness Enumeration

CWE-799

Related Identifiers

ALT-PU-2021-3108

ALT-PU-2021-3224

CVE-2021-32741

GHSA-CRVJ-VMF7-XRVR

OPENSUSE-SU-2021:1068-1

OPENSUSE-SU-2021_1068-1

Affected Products

Alt Linux

Nextcloud Server

Suse

References · 34

• https://github.com/nextcloud/server/pull/26958 · Patch
• https://osv.dev/vulnerability/openSUSE-SU-2021:1068-1 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-32741 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-32741 · Security Note
• https://github.com/nextcloud/security-advisories/security/advisories/GHSA-crvj-vmf7-xrvr · 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://bugzilla.suse.com/1188249 · Note
• https://suse.com/security/cve/CVE-2021-32679 · Note
• https://suse.com/security/cve/CVE-2021-32703 · Note
• https://bugzilla.suse.com/1188255 · Note