SB2021052529 - Insecure temporary directory processing in keycloak
Published: May 25, 2021
Security Bulletin ID
SB2021052529
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) Insecure Temporary File (CVE-ID: CVE-2021-20202)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to the way keycloak handles temporary directories on the system. Directories can be created prior to the Java process creating them in the temporary directory, but with wider user permissions, allowing the attacker to have access to the contents that keycloak stores in this directory.
Remediation
Install update from vendor's website.