SB2020112445 - Fedora 33 update for xen
Published: November 24, 2020 Updated: April 25, 2025
Security Bulletin ID
SB2020112445
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Input validation error (CVE-ID: CVE-2020-28368)
The vulnerability allows a local privileged user to gain access to sensitive information.
Xen through 4.14.x allows guest OS administrators to obtain sensitive information (such as AES keys from outside the guest) via a side-channel attack on a power/energy monitoring interface, aka a "Platypus" attack. NOTE: there is only one logically independent fix: to change the access control for each such interface in Xen.
Remediation
Install update from vendor's website.