CVE-2015-4103

Description

Xen 3.3.x through 4.5.x does not properly restrict write access to the host MSI message data field, which allows local x86 HVM guest administrators to cause a denial of service (host interrupt handling confusion) via vectors related to qemu and accessing spanning multiple fields.

Category

4.9
CVSS
Severity: Medium
CVSS 2.0 •
EPSS 0.12%
Vendor Advisory ubuntu.com Vendor Advisory debian.org Vendor Advisory opensuse.org Vendor Advisory fedoraproject.org Vendor Advisory debian.org Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory gentoo.org Vendor Advisory fedoraproject.org Vendor Advisory opensuse.org Vendor Advisory fedoraproject.org Vendor Advisory xen.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://www.ubuntu.com/usn/USN-2630-1 vendor advisory
https://support.citrix.com/article/CTX206006
http://www.debian.org/security/2015/dsa-3286 vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00029.html vendor advisory
http://lists.fedoraproject.org/pipermail/package-announce/2015-June/160154.html vendor advisory
http://www.debian.org/security/2015/dsa-3284 vendor advisory
http://www.securitytracker.com/id/1032456 vdb entry
http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00030.html vendor advisory
http://support.citrix.com/article/CTX201145
http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00007.html vendor advisory
http://www.securityfocus.com/bid/74947 vdb entry
http://xenbits.xen.org/xsa/advisory-128.html vendor advisory
https://security.gentoo.org/glsa/201604-03 vendor advisory
http://lists.fedoraproject.org/pipermail/package-announce/2015-June/160171.html vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00004.html vendor advisory
http://lists.fedoraproject.org/pipermail/package-announce/2015-June/160685.html vendor advisory

Frequently Asked Questions

What is the severity of CVE-2015-4103?
CVE-2015-4103 has been scored as a medium severity vulnerability.
How to fix CVE-2015-4103?
To fix CVE-2015-4103, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2015-4103 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2015-4103 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.