CVE-2021-32656

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Summary

CVECVE-2021-32656
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2021-06-01 22:15:00 UTC
Updated2022-10-25 15:47:00 UTC
DescriptionNextcloud Server is a Nextcloud package that handles data storage. A vulnerability in federated share exists in versions prior to 19.0.11, 20.0.10, and 21.0.2. An attacker can gain access to basic information about users of a server by accessing a public link that a legitimate server user added as a federated share. This happens because Nextcloud supports sharing registered users with other Nextcloud servers, which can be done automatically when selecting the "Add server automatically once a federated share was created successfully" setting. The vulnerability is patched in versions 19.0.11, 20.0.10, and 21.0.2 As a workaround, disable "Add server automatically once a federated share was created successfully" in the Nextcloud settings.

Risk And Classification

Problem Types: CWE-284

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Nextcloud Nextcloud Server All All All All

References

ReferenceSourceLinkTags
Nextcloud: Multiple Vulnerabilities (GLSA 202208-17) — Gentoo security GENTOO security.gentoo.org
Trusted servers exchange can be triggered by attacker · Advisory · nextcloud/security-advisories · GitHub CONFIRM github.com
HackerOne MISC hackerone.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 710590 Gentoo Linux Nextcloud Multiple Vulnerabilities (GLSA 202208-17)
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