CVE-2020-8138 Information

Description

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.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Reference

https://hackerone.com/reports/736867 https://nextcloud.com/security/advisory/?id=NC-SA-2020-014

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

NONE

Base Score

NONE

Base Severity

6.5