SB2021090706 - Authorization bypass through user-controlled key in Nextcloud Circles
Published: September 7, 2021
Security Bulletin ID
SB2021090706
CSH 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 vulnerability.
1) Authorization bypass through user-controlled key (CVE-ID: CVE-2021-37630)
CWE-ID: CWE-639 - Authorization Bypass Through User-Controlled Key
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote attacker to compromise the target system.
The vulnerability exists due to the Secret Circle can be joined without approval. A remote authenticated attacker can join any Secret Circle without approval by the Circle owner.
Remediation
Install update from vendor's website.