Privilege Escalation Vulnerability in Polkit Affecting Linux Systems
CVE-2021-3560
Key Information:
- Vendor
- Polkit Project
- Status
- Polkit
- Vendor
- CVE Published:
- 16 February 2022
Badges
Summary
A flaw in Polkit allows an unprivileged local attacker to bypass credential checks for D-Bus requests. This can lead to the elevation of privileges to that of the root user, enabling the attacker to execute commands with elevated permissions. This vulnerability poses a significant threat to the confidentiality of sensitive data, the integrity of system configurations, and can affect overall system availability.
CISA Reported
CISA provides regional cyber and physical services to support security and resilience across the United States. CISA monitor the most dangerious vulnerabilities and have identifed as being exploited but is not known by the CISA to be used in ransomware campaigns. This is subject to change at pace
The CISA's recommendation is: Apply updates per vendor instructions.
Affected Version(s)
polkit polkit 0.119
Exploit Proof of Concept (PoC)
PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.
References
CVSS V3.1
Timeline
- 🟡
Public PoC available
- 👾
Exploit known to exist
- 🦅
CISA Reported
Vulnerability published
Vulnerability Reserved