SB2020020429 - Multiple vulnerabilities in Nextcloud Server

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Main Vulnerability Database SB2020020429

SB2020020429 - Multiple vulnerabilities in Nextcloud Server

Published: February 4, 2020 Updated: July 17, 2020

Security Bulletin ID SB2020020429
CSH Severity
High
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Data manipulation

Breakdown by Severity

High 50% Low 50%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 vulnerabilities.


1) Exposure of Resource to Wrong Sphere (CVE-ID: CVE-2020-8121)

CWE-ID: -

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Amber


The vulnerability allows a remote authenticated user to read and manipulate data.

A bug in Nextcloud Server 14.0.4 could expose more data in reshared link shares than intended by the sharer.


2) Input validation error (CVE-ID: CVE-2020-8122)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a remote authenticated user to manipulate data.

A missing check in Nextcloud Server 14.0.3 could give recipient the possibility to extend the expiration date of a share they received.


Remediation

Install update from vendor's website.

References