SUSE SLES12 Security Update : xen (SUSE-SU-2017:2319-1)

This script is Copyright (C) 2017 Tenable Network Security, Inc.


Synopsis :

The remote SUSE host is missing one or more security updates.

Description :

This update for xen fixes several issues. These security issues were
fixed :

- CVE-2017-12135: Unbounded recursion in grant table code
allowed a malicious guest to crash the host or
potentially escalate privileges/leak information
(XSA-226, bsc#1051787).

- CVE-2017-12137: Incorrectly-aligned updates to
pagetables allowed for privilege escalation (XSA-227,
bsc#1051788).

- CVE-2017-11434: The dhcp_decode function in
slirp/bootp.c allowed local guest OS users to cause a
denial of service (out-of-bounds read) via a crafted
DHCP options string (bsc#1049578).

- CVE-2017-10664: qemu-nbd did not ignore SIGPIPE, which
allowed remote attackers to cause a denial of service
(daemon crash) by disconnecting during a
server-to-client reply attempt (bsc#1046637).

- CVE-2017-11334: The address_space_write_continue
function in exec.c allowed local guest OS privileged
users to cause a denial of service (out-of-bounds access
and guest instance crash) by leveraging use of
qemu_map_ram_ptr to access guest ram block area
(bsc#1048920).

- CVE-2017-10806: Stack-based buffer overflow in
hw/usb/redirect.c allowed local guest OS users to cause
a denial of service via vectors related to logging debug
messages (bsc#1047675).

- bsc#1052686: Premature clearing of GTF_writing /
GTF_reading lead to potentially leaking sensitive
information (XSA-230). This non-security issue was
fixed :

- bsc#1002573: Optimized LVM functions in block-dmmd
block-dmmd

Note that Tenable Network Security has extracted the preceding
description block directly from the SUSE security advisory. Tenable
has attempted to automatically clean and format it as much as possible
without introducing additional issues.

See also :

https://bugzilla.suse.com/1002573
https://bugzilla.suse.com/1046637
https://bugzilla.suse.com/1047675
https://bugzilla.suse.com/1048920
https://bugzilla.suse.com/1049578
https://bugzilla.suse.com/1051787
https://bugzilla.suse.com/1051788
https://bugzilla.suse.com/1052686
https://www.suse.com/security/cve/CVE-2017-10664.html
https://www.suse.com/security/cve/CVE-2017-10806.html
https://www.suse.com/security/cve/CVE-2017-11334.html
https://www.suse.com/security/cve/CVE-2017-11434.html
https://www.suse.com/security/cve/CVE-2017-12135.html
https://www.suse.com/security/cve/CVE-2017-12137.html
http://www.nessus.org/u?457bd7b0

Solution :

To install this SUSE Security Update use YaST online_update.
Alternatively you can run the command listed for your product :

SUSE OpenStack Cloud 6:zypper in -t patch
SUSE-OpenStack-Cloud-6-2017-1428=1

SUSE Linux Enterprise Server for SAP 12-SP1:zypper in -t patch
SUSE-SLE-SAP-12-SP1-2017-1428=1

SUSE Linux Enterprise Server 12-SP1-LTSS:zypper in -t patch
SUSE-SLE-SERVER-12-SP1-2017-1428=1

To bring your system up-to-date, use 'zypper patch'.

Risk factor :

High / CVSS Base Score : 7.2
(CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C)
CVSS Temporal Score : 5.3
(CVSS2#E:U/RL:OF/RC:C)
Public Exploit Available : false

Family: SuSE Local Security Checks

Nessus Plugin ID: 102913 ()

Bugtraq ID:

CVE ID: CVE-2017-10664
CVE-2017-10806
CVE-2017-11334
CVE-2017-11434
CVE-2017-12135
CVE-2017-12137

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