Executive Summary

Informations
Name CVE-2021-32655 First vendor Publication 2021-06-01
Vendor Cve Last vendor Modification 2021-06-11

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N
Overall CVSS Score 3.5
Base Score 3.5 Environmental Score 3.5
impact SubScore 1.4 Temporal Score 3.5
Exploitabality Sub Score 2.1
 
Attack Vector Network Attack Complexity Low
Privileges Required Low User Interaction Required
Scope Unchanged Confidentiality Impact Low
Integrity Impact None Availability Impact None
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:M/Au:S/C:P/I:N/A:N)
Cvss Base Score 3.5 Attack Range Network
Cvss Impact Score 2.9 Attack Complexity Medium
Cvss Expoit Score 6.8 Authentication Requires single instance
Calculate full CVSS 2.0 Vectors scores

Detail

Nextcloud Server is a Nextcloud package that handles data storage. In versions prior to 19.0.11, 20.0.10, and 21.0.2, an attacker is able to convert a Files Drop link to a federated share. This causes an issue on the UI side of the sharing user. When the sharing user opens the sharing panel and tries to remove the "Create" privileges of this unexpected share, Nextcloud server would silently grant the share read privileges. The vulnerability is patched in versions 19.0.11, 20.0.10 and 21.0.2. No workarounds are known to exist.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-32655

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 14

Sources (Detail)

Source Url
CONFIRM https://github.com/nextcloud/security-advisories/security/advisories/GHSA-grp...
MISC https://hackerone.com/reports/1167929

Alert History

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0
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Date Informations
2021-06-11 21:23:13
  • Multiple Updates
2021-06-02 17:22:46
  • Multiple Updates
2021-06-02 00:22:47
  • First insertion