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Test ID:1.3.6.1.4.1.25623.1.0.144942
Category:Web application abuses
Title:Nextcloud Server 19.0.1 Encryption Vulnerability (NC-SA-2020-039)
Summary:Nextcloud Server is prone to a vulnerability where it is possible to; downgrade the encryption scheme and break the integrity through known-plaintext attack.
Description:Summary:
Nextcloud Server is prone to a vulnerability where it is possible to
downgrade the encryption scheme and break the integrity through known-plaintext attack.

Vulnerability Insight:
A cryptographic issue allows an attacker to downgrade the encryption
scheme and break the integrity of encrypted files.

Affected Software/OS:
Nextcloud server 19.0.1.

Solution:
Update to version 19.0.2 or later.

CVSS Score:
1.9

CVSS Vector:
AV:L/AC:M/Au:N/C:N/I:P/A:N

Cross-Ref: Common Vulnerability Exposure (CVE) ID: CVE-2020-8150
http://seclists.org/fulldisclosure/2020/Dec/55
http://seclists.org/fulldisclosure/2020/Dec/58
http://seclists.org/fulldisclosure/2020/Dec/57
https://hackerone.com/reports/742588
https://nextcloud.com/security/advisory/?id=NC-SA-2020-039
CopyrightCopyright (C) 2020 Greenbone Networks GmbH

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