SB2020032012 - Server-Side Request Forgery (SSRF) in Nextcloud Server
Published: March 20, 2020 Updated: July 17, 2020
Security Bulletin ID
SB2020032012
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Server-Side Request Forgery (SSRF) (CVE-ID: CVE-2020-8138)
The vulnerability allows a remote authenticated user to gain access to sensitive information.
A missing check for IPv4 nested inside IPv6 in Nextcloud server < 17.0.1, < 16.0.7, and < 15.0.14 allowed a Server-Side Request Forgery (SSRF) vulnerability when subscribing to a malicious calendar URL.
Remediation
Install update from vendor's website.