Input validation error in Fedora and Xen - CVE-2015-2752
Published: April 1, 2015 / Updated: August 9, 2020
Vulnerability identifier: #VU40851
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2015-2752
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Fedoraproject
Xen Project
Xen Project
Affected software:
Fedora
Xen
Fedora
Xen
Detailed vulnerability description
The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.
The XEN_DOMCTL_memory_mapping hypercall in Xen 3.2.x through 4.5.x, when using a PCI passthrough device, is not preemptible, which allows local x86 HVM domain users to cause a denial of service (host CPU consumption) via a crafted request to the device model (qemu-dm).
How to mitigate CVE-2015-2752
Install update from vendor's website.
Sources
- http://lists.fedoraproject.org/pipermail/package-announce/2015-April/154574.html
- http://lists.fedoraproject.org/pipermail/package-announce/2015-April/154579.html
- http://lists.fedoraproject.org/pipermail/package-announce/2015-April/155198.html
- http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00014.html
- http://lists.opensuse.org/opensuse-security-announce/2015-05/msg00018.html
- http://www.securityfocus.com/bid/73448
- http://www.securitytracker.com/id/1031994
- http://xenbits.xen.org/xsa/advisory-125.html
- https://security.gentoo.org/glsa/201504-04