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CVE-2015-7512

Опубликовано: 30 нояб. 2015
Источник: redhat
CVSS2: 7.6
EPSS Средний

Описание

Buffer overflow in the pcnet_receive function in hw/net/pcnet.c in QEMU, when a guest NIC has a larger MTU, allows remote attackers to cause a denial of service (guest OS crash) or execute arbitrary code via a large packet.

A buffer overflow flaw was found in the way QEMU's AMD PC-Net II emulation validated certain received packets from a remote host in non-loopback mode. A remote, unprivileged attacker could potentially use this flaw to execute arbitrary code on the host with the privileges of the QEMU process. Note that to exploit this flaw, the guest network interface must have a large MTU limit.

Отчет

This issue does not affect the versions of the qemu-kvm packages as shipped with Red Hat Enterprise Linux 7 as they do not enable the pcnet backend driver. This issue does not affect the Red Hat Enterprise Linux 7 based versions of the qemu-kvm-rhev packages as shipped with Red Hat Enterprise Virtualization 3. This issue affects the versions of the kvm and xen packages as shipped with Red Hat Enterprise Linux 5, the versions of the qemu-kvm packages as shipped with Red Hat Enterprise Linux 6, and the Red Hat Enterprise Linux 6 based versions of qemu-kvm-rhev packages as shipped with Red Hat Enterprise Virtualization 3. Future updates for the respective releases may address this flaw. Please note that AMD PCNet adapter has to be explicitly enabled per-guest as it is not enabled in default configuration and is not supported by Red Hat in Red Hat Enterprise Linux 6 (for a list of supported devices please consult https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/6/html/Virtualization_Administration_Guide/sect-whitelist-device-options.html). Red Hat Enterprise Linux 5 is now in Production 3 Phase of the support and maintenance life cycle. Though this has been rated as having Important security impact and is not currently planned to be addressed in future updates. For additional information, refer to the Red Hat Enterprise Linux Life Cycle: https://access.redhat.com/support/policy/updates/errata/.

Затронутые пакеты

ПлатформаПакетСостояниеРекомендацияРелиз
Red Hat Enterprise Linux 5kvmWill not fix
Red Hat Enterprise Linux 5xenWill not fix
Red Hat Enterprise Linux 7qemu-kvmNot affected
Red Hat Enterprise Linux OpenStack Platform 5.0 (Icehouse) for RHEL 7qemu-kvm-rhevNot affected
Red Hat Enterprise Linux OpenStack Platform 6 (Juno)qemu-kvm-rhevNot affected
Red Hat Enterprise Linux OpenStack Platform 7 (Kilo)qemu-kvm-rhevNot affected
Red Hat OpenStack Platform 8 (Liberty)qemu-kvm-rhevNot affected
Red Hat Enterprise Linux 6qemu-kvmFixedRHSA-2015:269422.12.2015
Red Hat Enterprise Linux OpenStack Platform 5.0 (Icehouse) for RHEL 6qemu-kvm-rhevFixedRHSA-2015:269522.12.2015
RHEV 3.X Hypervisor and Agents for RHEL-6qemu-kvm-rhevFixedRHSA-2015:269622.12.2015

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Дополнительная информация

Статус:

Important
Дефект:
CWE-122
https://bugzilla.redhat.com/show_bug.cgi?id=1285061Qemu: net: pcnet: buffer overflow in non-loopback mode

EPSS

Процентиль: 95%
0.2106
Средний

7.6 High

CVSS2

Связанные уязвимости

CVSS3: 9
ubuntu
больше 9 лет назад

Buffer overflow in the pcnet_receive function in hw/net/pcnet.c in QEMU, when a guest NIC has a larger MTU, allows remote attackers to cause a denial of service (guest OS crash) or execute arbitrary code via a large packet.

CVSS3: 9
nvd
больше 9 лет назад

Buffer overflow in the pcnet_receive function in hw/net/pcnet.c in QEMU, when a guest NIC has a larger MTU, allows remote attackers to cause a denial of service (guest OS crash) or execute arbitrary code via a large packet.

CVSS3: 9
debian
больше 9 лет назад

Buffer overflow in the pcnet_receive function in hw/net/pcnet.c in QEM ...

CVSS3: 9
github
около 3 лет назад

Buffer overflow in the pcnet_receive function in hw/net/pcnet.c in QEMU, when a guest NIC has a larger MTU, allows remote attackers to cause a denial of service (guest OS crash) or execute arbitrary code via a large packet.

suse-cvrf
больше 9 лет назад

Security update for qemu

EPSS

Процентиль: 95%
0.2106
Средний

7.6 High

CVSS2

Уязвимость CVE-2015-7512