SB2020032024 - Privilege escalation in Nextcloud Desktop client for macOS
Published: March 20, 2020 Updated: September 15, 2020
Security Bulletin ID
SB2020032024
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Code Injection (CVE-ID: CVE-2020-8140)
CWE-ID: CWE-94 - Improper Control of Generation of Code ('Code Injection')
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Clear
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to improper input validation in Nextcloud Desktop Client for macOS when starting the client with DYLD_INSERT_LIBRARIES set in the environment. A local user can inject and execute arbitrary library on the system.
Remediation
Install update from vendor's website.