Permissions, Privileges, and Access Controls in Xen - CVE-2015-4104
Published: June 3, 2015 / Updated: August 9, 2020
Vulnerability identifier: #VU40725
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2015-4104
CWE-ID: CWE-264
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.
Xen 3.3.x through 4.5.x does not properly restrict access to PCI MSI mask bits, which allows local x86 HVM guest users to cause a denial of service (unexpected interrupt and host crash) via unspecified vectors.
Affected software
Xen
SUSE Linux
Fedora
xen
SUSE Linux
Fedora
xen
How to mitigate CVE-2015-4104
Install update from vendor's website.
xen - addressed in versions 4.4.2-5.fc21, 4.5.0-10.fc22
External References
- http://lists.fedoraproject.org/pipermail/package-announce/2015-June/160154.html
- http://lists.fedoraproject.org/pipermail/package-announce/2015-June/160171.html
- http://lists.fedoraproject.org/pipermail/package-announce/2015-June/160685.html
- http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00004.html
- http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00007.html
- http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00029.html
- http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00030.html
- http://support.citrix.com/article/CTX201145
- http://www.debian.org/security/2015/dsa-3284
- http://www.debian.org/security/2015/dsa-3286
- http://www.securityfocus.com/bid/74950
- http://www.securitytracker.com/id/1032464
- http://www.ubuntu.com/usn/USN-2630-1
- http://xenbits.xen.org/xsa/advisory-129.html
- https://security.gentoo.org/glsa/201604-03
- https://support.citrix.com/article/CTX206006