SB2020121707 - Privilege escalation in NGINX Controller
Published: December 17, 2020
Security Bulletin ID
SB2020121707
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) Untrusted search path (CVE-ID: CVE-2020-27730)
CWE-ID: CWE-426 - Untrusted Search Path
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to NGINX Controller Agent does not use absolute paths when calling system utilities. A local user can place a specially crafted file in the agent working directory and execute arbitrary code on the system with root privileges.
Remediation
Install update from vendor's website.