Home/CVE/Nextcloud server is an open source, self hosted personal cloud. In affected versions an attacker is able to bypass Two F
CVE

CVE-2021-32800

Nextcloud server is an open source, self hosted personal cloud. In affected versions an attacker is able to bypass Two F

Nextcloud server is an open source, self hosted personal cloud. In affected versions an attacker is able to bypass Two Factor Authentication in Nextcloud. Thus knowledge of a password, or access to a WebAuthN trusted device of a user was sufficient to gain access to an account.

It is recommended that the Nextcloud Server is upgraded to 20.0.12, 21.0.4 or 22.1.0. There are no workaround for this vulnerability.

HIGH · CVSS 8.1 EPSS 0.00327
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-306Missing Authentication for Critical Function
CWE-306Missing Authentication for Critical Function
▤

Affected Products & Versions

3
nextcloud server< 20.0.12
nextcloud server>= 21.0.0 and < 21.0.4
nextcloud server>= 22.0.0 and < 22.1.0
▣

Scoring & Timeline

8.1
HIGH · CVSS v3.1 · security-advisories@github.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD07 Sep 2021 · 10:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
⚑

Vendor Advisories

5
suse-csafopenSUSE-SU-2021:1275-1
suse-csafopenSUSE-SU-2021:1252-1
suse-csafopenSUSE-SU-2021:1253-1
suse-csafopenSUSE-SU-2021:1255-1
suse-csafopenSUSE-SU-2021:1250-1
🔗

References & Sources

4
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-gv5w-8q25-785vThird Party Advisory
https://github.com/nextcloud/server/pull/28078PatchThird Party Advisory
https://hackerone.com/reports/1271052Permissions RequiredThird Party Advisory
https://security.gentoo.org/glsa/202208-17Third Party Advisory
Intelligence Graph · click any node to traverse
CVETechnique ActorTool Family
drag to reposition · click any node to traverse · button top-right enlarges
External lookups - second-class, for what we don’t hold ourselves
NVDCVE.orgCISAVulnersExploit-DBGitHub PoCVulnCheck KEVGreyNoise
Vulnerabilities
CISA KEV catalog
CWE weaknesses
CAPEC attack patterns
Package vulnerabilities
Threat intelligence
Threat actors
Tools & malware
ATT&CK techniques
IOCs
Detection & defense
Sigma rules
YARA rules
Atomic Red Team tests
D3FEND countermeasures
Compliance
NIST 800-53
ISO 27001:2022
SOC 2 TSC
PCI-DSS v4.0
CIS Controls v8.1
About
All capabilities
Live statistics
Data sources
Privacy policy
Terms of service
threatengine.sh  ·  Open-source threat intelligence platform  ·  100+ authoritative sources  ·  Every fact traces to its origin