PT-2014-8815 · Xen+2 · Xen+2

Andrew Cooper · Publicado 2014-12-09 · Atualizado 2018-10-30 · CVE-2014-9066

Positive Technologies (AI Summary)

CVSS v2.0

4.7

Média

Vetor base

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

Enumeração de Fraquezas

CWE-17

Identificadores relacionados

CVE-2014-9066

OPENSUSE-SU-2015_0226-1

OPENSUSE-SU-2015_0256-1

SUSE-SU-2015:0613-1

Produtos afetados

Debian

Suse

Xen

Referências · 74

• http://support.novell.com/security/cve/CVE-2015-0361.html · Nota
• https://bugzilla.suse.com/912011 · Nota
• http://support.novell.com/security/cve/CVE-2014-9065.html · Nota
• https://suse.com/security/cve/CVE-2015-0361 · Nota
• https://bugzilla.suse.com/show_bug.cgi?id=889526 · Nota
• https://bugzilla.suse.com/show_bug.cgi?id=906996 · Nota
• https://bugzilla.suse.com/919464 · Nota
• https://osv.dev/vulnerability/SUSE-SU-2015:0613-1 · Aviso do Fabricante
• http://openwall.com/lists/oss-security/2014/12/08/4 · Nota
• http://support.novell.com/security/cve/CVE-2013-3495.html · Nota
• https://security.gentoo.org/glsa/201504-04 · Aviso do Fabricante
• https://bugzilla.suse.com/903680 · Nota
• https://suse.com/security/cve/CVE-2014-9065 · Nota
• https://ubuntu.com/security/CVE-2014-9066 · Aviso do Fabricante
• https://bugzilla.suse.com/show_bug.cgi?id=903967 · Nota