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CVE-2020-8227

Good to know:

Date: August 21, 2020

Missing sanitization of a server response in Nextcloud Desktop Client 2.6.4 for Linux allowed a malicious Nextcloud Server to store files outside of the dedicated sync directory.

Language: C++

Severity Score

6.8

Related Resources (7)

Url: https://security-tracker.debian.org/tracker/CVE-2020-8227

Url: https://security.gentoo.org/glsa/202009-09

Url: https://nvd.nist.gov/vuln/detail/CVE-2020-8227

Url: https://nextcloud.com/security/advisory/?id=NC-SA-2020-032

Url: https://hackerone.com/reports/590319

Url: https://people.canonical.com/~ubuntu-security/cve/CVE-2020-8227

Url: https://www.mend.io/vulnerability-database/CVE-2020-8227

Severity Score

6.8

Weakness Type (CWE)

Path Traversal

CWE-22

Top Fix

Upgrade Version

Upgrade to version 2.6.5

CVSS v3.1

Base Score:	6.8
Attack Vector (AV):	NETWORK
Attack Complexity (AC):	LOW
Privileges Required (PR):	HIGH
User Interaction (UI):	REQUIRED
Scope (S):	UNCHANGED
Confidentiality (C):	HIGH
Integrity (I):	HIGH
Availability (A):	HIGH

CVSS v2

Base Score:	7.1
Access Vector (AV):	NETWORK
Access Complexity (AC):	HIGH
Authentication (AU):	SINGLE
Confidentiality (C):	COMPLETE
Integrity (I):	COMPLETE
Availability (A):	COMPLETE
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