SB2022122317 - Security restrictions bypass in CRI-O
Published: December 23, 2022 Updated: January 26, 2023
Security Bulletin ID
SB2022122317
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 security vulnerability.
1) Input validation error (CVE-ID: CVE-2022-4318)
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.