SB2023030858 - Security restrictions bypass in OpenShift Container Platform 4.12
Published: March 8, 2023
Security Bulletin ID
SB2023030858
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Input validation error (CVE-ID: CVE-2022-4318)
CWE-ID: CWE-20 - Improper input validation
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local user to bypass certain security restrictions.
The vulnerability exists due to improper input validation when handling newline characters in environment variables. A local user can create a specially crafted environment variable and add entries to a container's /etc/passwd. It is also possible to circumvent admission validation of username/UID by adding such an entry.
Remediation
Install update from vendor's website.