SB2020040414 - Permissions, Privileges, and Access Controls in xen (Alpine package)
Published: April 4, 2020
Security Bulletin ID
SB2020040414
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2019-17343)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to insecure processing of PV domains and related configuration. An untrusted PV domain with access to a physical device can DMA into its own pagetables, leading to privilege escalation.
Remediation
Install update from vendor's website.