SB2024050736 - SUSE update for xen
Published: May 7, 2024
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 3 secuirty vulnerabilities.
1) Input validation error (CVE-ID: CVE-2023-46842)
The vulnerability allows a malicious guest to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of register values when invoking a hypercall. A malicious HVM or PVH guest can pass specially crafted input to the hypervisor and perform a denial of service (DoS) attack.
2) Processor optimization removal or modification of security-critical code (CVE-ID: CVE-2024-2201)
The vulnerability allows a malicious guest to escalate privileges on the system.
The vulnerability exists due to native branch history injection on x86 systems. A malicious guest can infer the contents of arbitrary host memory, including memory assigned to other guests and compromise the affected system.
3) Type confusion (CVE-ID: CVE-2024-31142)
The vulnerability allows a malicious guest to escalate privileges on the system.
The vulnerability exists due to a logical error caused by a branch type confusion when implementing fixes for the following vulnerabilities:
#VU65219 (CVE-2022-23816)
#VU65204 (CVE-2022-23825)
#VU65205 (CVE-2022-29900)
#VU79263 (CVE-2023-20569)
A malicious guest can gain access to sensitive information and escalate privileges on the system.
Remediation
Install update from vendor's website.