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Nextcloud Server < 15.0.14, 16.x < 16.0.7, 17.x < 17.0.2 SSRF Vulnerability (NC-SA-2020-014)
Information
Severity
Severity
Medium
Family
Family
Web application abuses
CVSSv2 Base
CVSSv2 Base
6.5
CVSSv2 Vector
CVSSv2 Vector
AV:N/AC:L/Au:S/C:P/I:P/A:P
Solution Type
Solution Type
Vendor Patch
Created
Created
4 years ago
Modified
Modified
4 years ago
Summary
Nextcloud Server is prone to a server-side request forgery protection bypass vulnerability in calendar subscriptions.
Insight
Insight
A missing check for IPv4 nested inside IPv6 in Nextcloud serer allows a SSRF when subscribing to a malicious calendar URL.
Affected Software
Affected Software
Nextcloud server versions prior 15.0.14, 16.x and 17.x.
Detection Method
Detection Method
Checks if a vulnerable version is present on the target host.
Solution
Solution
Update to version 15.0.14, 16.0.7, 17.0.2 or later.