openSUSE Security Update : xen (openSUSE-2017-1023)

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 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,

- 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 bsc#1052686.

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

This update was imported from the SUSE:SLE-12-SP3:Update update

See also :

Solution :

Update the affected xen packages.

Risk factor :

High / CVSS Base Score : 7.2

Family: SuSE Local Security Checks

Nessus Plugin ID: 103159 ()

Bugtraq ID:

CVE ID: CVE-2017-10664

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