QID 377774

QID 377774: Citrix XenServer Security Updates (CTX341586)

An issue has been identified in AMD CPU hardware that may allow code in a guest VM to infer the value of in-memory data in other guest VMs. Although this is not an issue in the Citrix Hypervisor product itself, Citrix is releasing hotfixes that include mitigations for this hardware issue. This issue has the following identifier: CVE-2021-26401

Affected Products:
Citrix XenServer 7.1 CU2 LTSR Note: This QID will detect only for Citrix XenServer 7.1 LTSR

QID Detection Logic (Authenticated):
OS:Citrix XenServer
The QID checks if Hotfixes is applied on the vulnerable versions of Citrix XenServer.

Vulnerable version may allow code in a guest VM to infer the value of in-memory data in other guest VMs.

  • CVSS V3 rated as Medium - 5.6 severity.
  • CVSS V2 rated as Low - 1.9 severity.
    • Solution

    Hotfixes have been released for Citrix XenServer to address these issues. Refer to CTX341586 to obtain more information.

    Vendor References

    CVEs related to QID 377774

    CVE-2021-26401 |
    Software Advisories
    Advisory ID Software Component Link
    CTX341586 URL Logo support.citrix.com/article/CTX341586/citrix-hypervisor-security-update
    By selecting these links, you may be leaving CVEreport webspace. We have provided these links to other websites because they may have information that would be of interest to you. No inferences should be drawn on account of other sites being referenced, or not, from this page. There may be other websites that are more appropriate for your purpose. CVEreport does not necessarily endorse the views expressed, or concur with the facts presented on these sites. Further, CVEreport does not endorse any commercial products that may be mentioned on these sites. Please address comments about any linked pages to [email protected].