openSUSE Security Update : xen (openSUSE-2017-1022)

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


Synopsis :

The remote openSUSE host is missing a security update.

Description :

This update for xen to version 4.7.3 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-2017-12136: Race conditions with maptrack free list
handling allows a malicious guest administrator to crash
the host or escalate their privilege to that of the host
(XSA-228, bsc#1051789).

- 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-2017-12855: Premature clearing of GTF_writing /
GTF_reading lead to potentially leaking sensitive
information (XSA-230 CVE-2017-12855).

These non-security issues were fixed :

- bsc#1055695: XEN: 11SP4 and 12SP3 HVM guests can not be
restored after the save using xl stack

- bsc#1035231: Migration of HVM domU did not use
superpages on destination dom0

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

- bsc#1037840: Xen-detect always showed HVM for PV guests

This update was imported from the SUSE:SLE-12-SP2:Update update
project.

See also :

https://bugzilla.opensuse.org/show_bug.cgi?id=1002573
https://bugzilla.opensuse.org/show_bug.cgi?id=1026236
https://bugzilla.opensuse.org/show_bug.cgi?id=1035231
https://bugzilla.opensuse.org/show_bug.cgi?id=1037840
https://bugzilla.opensuse.org/show_bug.cgi?id=1046637
https://bugzilla.opensuse.org/show_bug.cgi?id=1049578
https://bugzilla.opensuse.org/show_bug.cgi?id=1051787
https://bugzilla.opensuse.org/show_bug.cgi?id=1051788
https://bugzilla.opensuse.org/show_bug.cgi?id=1051789
https://bugzilla.opensuse.org/show_bug.cgi?id=1052686
https://bugzilla.opensuse.org/show_bug.cgi?id=1055695

Solution :

Update the affected xen packages.

Risk factor :

High / CVSS Base Score : 7.2
(CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C)

Family: SuSE Local Security Checks

Nessus Plugin ID: 103158 ()

Bugtraq ID:

CVE ID: CVE-2016-9603
CVE-2017-10664
CVE-2017-11434
CVE-2017-12135
CVE-2017-12136
CVE-2017-12137
CVE-2017-12855

Ready to Amp Up Your Nessus Experience?

Get Nessus Professional to scan unlimited IPs, run compliance checks & more

Buy Nessus Professional Now