SB2024031439 - Citrix Hypervisor update for Intel firmware

Description

This security bulletin contains information about 3 secuirty vulnerabilities.

1) Protection Mechanism Failure (CVE-ID: CVE-2023-39368)

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient implementation of security measures in the bus lock regulator mechanism. A remote attacker can trick the victim to open a specially crafted file and perform a denial of service (DoS) attack.

2) Information disclosure (CVE-ID: CVE-2023-38575)

The vulnerability allows a local user to gain access to potentially sensitive information.

The vulnerability exists due to non-transparent sharing of return predictor targets between contexts in some Intel Processors. A local user can gain unauthorized access to sensitive information on the system.

3) Information disclosure (CVE-ID: CVE-2023-28746)

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.

Remediation

Install update from vendor's website.

References

• https://support.citrix.com/article/CTX616982"
• https://support.citrix.com/article/CTX616982</a></p><p>
• https://support.citrix.com/article/CTX586659/hotfix-xs82ecu1061-for-citrix-hypervisor-82-cumulative-update-1<br></p>