SB2021090702 - Authorization bypass through user-controlled key in Nextcloud Deck
Published: September 7, 2021
Security Bulletin ID
SB2021090702
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Authorization bypass through user-controlled key (CVE-ID: CVE-2021-37631)
The vulnerability allows a remote attacker to compromise the target system.
The vulnerability exists due to the affected application does not properly check membership of users in a Circle. A remote authenticated attacker can gain access to boards that have been shared with a Circle, even if the user was not a member of the circle.
Remediation
Install update from vendor's website.