PT-2014-8815 · Xen+2 · Xen+2

Andrew Cooper · Published 2014-12-09 · Updated 2018-10-30 · CVE-2014-9066

Positive Technologies (AI Summary)

CVSS v2.0

4.7

Medium

Base vector

AV:L/AC:M/Au:N/C:N/I:N/A:C

Name of the Vulnerable Software and Affected Versions Xen versions 4.4.x and earlier

Description The issue arises when using a large number of VCPUs, as Xen does not properly handle read and write locks. This allows local x86 guest users to cause a denial of service, resulting in a write denial or NMI watchdog timeout and host crash, by sending a large number of read requests.

Recommendations For Xen versions 4.4.x and earlier, consider restricting the number of VCPUs used to minimize the risk of exploitation. As a temporary workaround, limiting the number of read requests from local x86 guest users may help prevent the denial of service. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

DoS

Weakness Enumeration

CWE-17

Related Identifiers

CVE-2014-9066

OPENSUSE-SU-2015_0226-1

OPENSUSE-SU-2015_0256-1

SUSE-SU-2015:0613-1

Affected Products

Debian

Suse

Xen

References · 74

• https://osv.dev/vulnerability/SUSE-SU-2015:0613-1 · Vendor Advisory
• https://security.gentoo.org/glsa/201504-04 · Vendor Advisory
• https://ubuntu.com/security/CVE-2014-9066 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2014-9066 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2014-9066 · Security Note
• http://lists.opensuse.org/opensuse-security-announce/2015-02/msg00010.html · Vendor Advisory
• http://xenbits.xen.org/xsa/advisory-114.html · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2014-9066 · Vendor Advisory
• https://security-tracker.debian.org/tracker/source-package/xen · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2014-9066 · Security Note
• https://osv.dev/vulnerability/CVE-2014-9066 · Vendor Advisory
• http://lists.opensuse.org/opensuse-security-announce/2015-02/msg00005.html · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2014-9066 · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-9066 · Security Note
• http://support.novell.com/security/cve/CVE-2015-0361.html · Note