SB2024032174 - Fedora 40 update for xen
Published: March 21, 2024
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 3 vulnerabilities.
1) Information disclosure (CVE-ID: CVE-2023-28746)
CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local user to gain access to potentially sensitive information.
The vulnerability exists due to information exposure through microarchitectural state after transient execution from some register files for some Intel Atom Processors. A local user can gain access to sensitive information.
2) Race condition (CVE-ID: CVE-2024-2193)
CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:U/U:Clear
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a speculative race condition. A local user can exploit the race and gain unauthorized access to contents of arbitrary host memory, including memory assigned to other guests.
The vulnerability was dubbed GhostRace.
3) Resource management error (CVE-ID: CVE-2023-46841)
CWE-ID: CWE-399 - Resource Management Errors
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H/E:U/U:Green
The vulnerability allows a remote guest to perform a denial of service (DoS) attack.
The vulnerability exists due to incorrect implementation of the Shadow Stacks (CET-SS) feature. An unprivileged guest can cause a hypervisor crash, causing a Denial of Service (DoS) of the entire host.
Remediation
Install update from vendor's website.