PT-2015-7623 · Xen · Xen
Julien Grall
·
Publicado
2015-10-30
·
Atualizado
2018-10-30
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CVE-2015-7813
CVSS v2.0
2.1
Baixa
| Vetor | AV:L/AC:L/Au:N/C:N/I:N/A:P |
Name of the Vulnerable Software and Affected Versions
Xen versions 4.4.x through 4.6.x
Description
The issue allows local guests to cause a denial of service by reporting unimplemented hypercalls without limiting the number of printk console messages. This can be achieved through a sequence of HYPERVISOR physdev op hypercalls, which are not properly handled in the do physdev op function in arch/arm/physdev.c, or HYPERVISOR hvm op hypercalls, which are not properly handled in the do hvm op function in arch/arm/hvm.c.
Recommendations
For Xen versions 4.4.x through 4.6.x, consider restricting the use of the do physdev op and do hvm op functions until a patch is available. As a temporary workaround, limiting the number of printk console messages for unimplemented hypercalls may help mitigate the risk of denial of service.
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
DoS
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Enumeração de Fraquezas
Identificadores relacionados
Produtos afetados
Xen