Home/CVE/Nextcloud Richdocuments is an open source collaborative office suite. In affected versions the File Drop features ("Uplo
CVE

CVE-2021-37628

Nextcloud Richdocuments is an open source collaborative office suite. In affected versions the File Drop features ("Uplo

Nextcloud Richdocuments is an open source collaborative office suite. In affected versions the File Drop features ("Upload Only" public link shares in Nextcloud) can be bypassed using the Nextcloud Richdocuments app. An attacker was able to read arbitrary files in such a share.

It is recommended that the Nextcloud Richdocuments is upgraded to 3.8.4 or 4.2.1. If upgrading is not possible then it is recommended to disable the Richdocuments application.

HIGH · CVSS 7.5 EPSS 0.00364
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-639Authorization Bypass Through User-Controlled Key
CWE-639Authorization Bypass Through User-Controlled Key
▤

Affected Products & Versions

2
nextcloud richdocuments< 3.8.4
nextcloud richdocuments>= 4.0.0 and < 4.2.1
▣

Scoring & Timeline

7.5
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 · 09:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
🔗

References & Sources

3
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://github.com/nextcloud/richdocuments/pull/1664PatchThird Party Advisory
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-pxhh-954f-8w7wThird Party Advisory
https://hackerone.com/reports/1253403Permissions RequiredThird Party Advisory
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