Логотип exploitDog
Консоль
Логотип exploitDog

exploitDog

suse-cvrf логотип

SUSE-SU-2018:2069-1

Опубликовано: 26 июл. 2018
Источник: suse-cvrf

Описание

Security update for xen

This update for xen fixes the following issues:

Security issues fixed:

  • CVE-2018-12617: Fix integer overflow that causes segmentation fault in qmp_guest_file_read() with g_malloc() (bsc#1098744).
  • CVE-2018-3665: Fix Lazy FP Save/Restore issue (XSA-267) (bsc#1095242).
  • CVE-2018-11806: Fix heap buffer overflow while reassembling fragmented datagrams (bsc#1096224).
  • CVE-2018-12891: Fix possible Denial of Service (DoS) via certain PV MMU operations that affect the entire host (XSA-264) (bsc#1097521).
  • CVE-2018-12893: Fix crash/Denial of Service (DoS) via safety check (XSA-265) (bsc#1097522).

Bug fixes:

  • bsc#1079730: Fix failed 'write' lock.
  • bsc#1027519: Add upstream patches from January.

Список пакетов

SUSE Linux Enterprise Server 12 SP1-LTSS
xen-4.5.5_24-22.52.3
xen-doc-html-4.5.5_24-22.52.3
xen-kmp-default-4.5.5_24_k3.12.74_60.64.96-22.52.3
xen-libs-4.5.5_24-22.52.3
xen-libs-32bit-4.5.5_24-22.52.3
xen-tools-4.5.5_24-22.52.3
xen-tools-domU-4.5.5_24-22.52.3
SUSE Linux Enterprise Server for SAP Applications 12 SP1
xen-4.5.5_24-22.52.3
xen-doc-html-4.5.5_24-22.52.3
xen-kmp-default-4.5.5_24_k3.12.74_60.64.96-22.52.3
xen-libs-4.5.5_24-22.52.3
xen-libs-32bit-4.5.5_24-22.52.3
xen-tools-4.5.5_24-22.52.3
xen-tools-domU-4.5.5_24-22.52.3

Ссылки

Описание

m_cat in slirp/mbuf.c in Qemu has a heap-based buffer overflow via incoming fragmented datagrams.

Затронутые продукты
SUSE Linux Enterprise Server 12 SP1-LTSS:xen-4.5.5_24-22.52.3
SUSE Linux Enterprise Server 12 SP1-LTSS:xen-doc-html-4.5.5_24-22.52.3
SUSE Linux Enterprise Server 12 SP1-LTSS:xen-kmp-default-4.5.5_24_k3.12.74_60.64.96-22.52.3
SUSE Linux Enterprise Server 12 SP1-LTSS:xen-libs-32bit-4.5.5_24-22.52.3
Ссылки

Описание

qmp_guest_file_read in qga/commands-posix.c and qga/commands-win32.c in qemu-ga (aka QEMU Guest Agent) in QEMU 2.12.50 has an integer overflow causing a g_malloc0() call to trigger a segmentation fault when trying to allocate a large memory chunk. The vulnerability can be exploited by sending a crafted QMP command (including guest-file-read with a large count value) to the agent via the listening socket.

Затронутые продукты
SUSE Linux Enterprise Server 12 SP1-LTSS:xen-4.5.5_24-22.52.3
SUSE Linux Enterprise Server 12 SP1-LTSS:xen-doc-html-4.5.5_24-22.52.3
SUSE Linux Enterprise Server 12 SP1-LTSS:xen-kmp-default-4.5.5_24_k3.12.74_60.64.96-22.52.3
SUSE Linux Enterprise Server 12 SP1-LTSS:xen-libs-32bit-4.5.5_24-22.52.3
Ссылки

Описание

An issue was discovered in Xen through 4.10.x. Certain PV MMU operations may take a long time to process. For that reason Xen explicitly checks for the need to preempt the current vCPU at certain points. A few rarely taken code paths did bypass such checks. By suitably enforcing the conditions through its own page table contents, a malicious guest may cause such bypasses to be used for an unbounded number of iterations. A malicious or buggy PV guest may cause a Denial of Service (DoS) affecting the entire host. Specifically, it may prevent use of a physical CPU for an indeterminate period of time. All Xen versions from 3.4 onwards are vulnerable. Xen versions 3.3 and earlier are vulnerable to an even wider class of attacks, due to them lacking preemption checks altogether in the affected code paths. Only x86 systems are affected. ARM systems are not affected. Only multi-vCPU x86 PV guests can leverage the vulnerability. x86 HVM or PVH guests as well as x86 single-vCPU PV ones cannot leverage the vulnerability.

Затронутые продукты
SUSE Linux Enterprise Server 12 SP1-LTSS:xen-4.5.5_24-22.52.3
SUSE Linux Enterprise Server 12 SP1-LTSS:xen-doc-html-4.5.5_24-22.52.3
SUSE Linux Enterprise Server 12 SP1-LTSS:xen-kmp-default-4.5.5_24_k3.12.74_60.64.96-22.52.3
SUSE Linux Enterprise Server 12 SP1-LTSS:xen-libs-32bit-4.5.5_24-22.52.3
Ссылки

Описание

An issue was discovered in Xen through 4.10.x. One of the fixes in XSA-260 added some safety checks to help prevent Xen livelocking with debug exceptions. Unfortunately, due to an oversight, at least one of these safety checks can be triggered by a guest. A malicious PV guest can crash Xen, leading to a Denial of Service. All Xen systems which have applied the XSA-260 fix are vulnerable. Only x86 systems are vulnerable. ARM systems are not vulnerable. Only x86 PV guests can exploit the vulnerability. x86 HVM and PVH guests cannot exploit the vulnerability. An attacker needs to be able to control hardware debugging facilities to exploit the vulnerability, but such permissions are typically available to unprivileged users.

Затронутые продукты
SUSE Linux Enterprise Server 12 SP1-LTSS:xen-4.5.5_24-22.52.3
SUSE Linux Enterprise Server 12 SP1-LTSS:xen-doc-html-4.5.5_24-22.52.3
SUSE Linux Enterprise Server 12 SP1-LTSS:xen-kmp-default-4.5.5_24_k3.12.74_60.64.96-22.52.3
SUSE Linux Enterprise Server 12 SP1-LTSS:xen-libs-32bit-4.5.5_24-22.52.3
Ссылки

Описание

System software utilizing Lazy FP state restore technique on systems using Intel Core-based microprocessors may potentially allow a local process to infer data from another process through a speculative execution side channel.

Затронутые продукты
SUSE Linux Enterprise Server 12 SP1-LTSS:xen-4.5.5_24-22.52.3
SUSE Linux Enterprise Server 12 SP1-LTSS:xen-doc-html-4.5.5_24-22.52.3
SUSE Linux Enterprise Server 12 SP1-LTSS:xen-kmp-default-4.5.5_24_k3.12.74_60.64.96-22.52.3
SUSE Linux Enterprise Server 12 SP1-LTSS:xen-libs-32bit-4.5.5_24-22.52.3
Ссылки
Уязвимость SUSE-SU-2018:2069-1