SUSE-SU-2018:0638-1

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Source
https://www.suse.com/support/update/announcement/2018/suse-su-20180638-1/
Import Source
https://ftp.suse.com/pub/projects/security/osv/SUSE-SU-2018:0638-1.json
JSON Data
https://api.osv.dev/v1/vulns/SUSE-SU-2018:0638-1
Related
Published
2018-03-08T17:07:37Z
Modified
2018-03-08T17:07:37Z
Summary
Security update for xen
Details

This update for xen fixes several issues.

This new feature was included:

  • add script and sysv service to watch for vcpu online/offline events in a HVM domU

These security issues were fixed:

  • CVE-2017-5753, CVE-2017-5715, CVE-2017-5754: Prevent information leaks via side effects of speculative execution, aka 'Spectre' and 'Meltdown' attacks (bsc#1074562, bsc#1068032)
  • CVE-2018-5683: The vgadrawtext function allowed local OS guest privileged users to cause a denial of service (out-of-bounds read and QEMU process crash) by leveraging improper memory address validation (bsc#1076116).
  • CVE-2017-18030: The cirrusinvalidateregion function allowed local OS guest privileged users to cause a denial of service (out-of-bounds array access and QEMU process crash) via vectors related to negative pitch (bsc#1076180).
  • CVE-2017-15595: x86 PV guest OS users were able to cause a DoS (unbounded recursion, stack consumption, and hypervisor crash) or possibly gain privileges via crafted page-table stacking (bsc#1061081)
  • CVE-2017-17566: Prevent PV guest OS users to cause a denial of service (host OS crash) or gain host OS privileges in shadow mode by mapping a certain auxiliary page (bsc#1070158).
  • CVE-2017-17563: Prevent guest OS users to cause a denial of service (host OS crash) or gain host OS privileges by leveraging an incorrect mask for reference-count overflow checking in shadow mode (bsc#1070159).
  • CVE-2017-17564: Prevent guest OS users to cause a denial of service (host OS crash) or gain host OS privileges by leveraging incorrect error handling for reference counting in shadow mode (bsc#1070160).
  • CVE-2017-17565: Prevent PV guest OS users to cause a denial of service (host OS crash) if shadow mode and log-dirty mode are in place, because of an incorrect assertion related to M2P (bsc#1070163).
  • Added missing intermediate preemption checks for guest requesting removal of memory. This allowed malicious guest administrator to cause denial of service due to the high cost of this operation (bsc#1080635).
  • Because of XEN not returning the proper error messages when transitioning grant tables from v2 to v1 a malicious guest was able to cause DoS or potentially allowed for privilege escalation as well as information leaks (bsc#1080662).

These non-security issues were fixed:

  • bsc#1035442: Increased the value of LIBXLDESTROYTIMEOUT from 10 to 100 seconds. If many domUs shutdown in parallel the backends couldn't keep up
  • bsc#1031382: Prevent VMs from crashing when migrating between dom0 hosts in case read() returns zero on the receiver side.
References

Affected packages

SUSE:Linux Enterprise Software Development Kit 11 SP4 / xen

Package

Name
xen
Purl
pkg:rpm/suse/xen&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2011%20SP4

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
4.4.4_28-61.23.2

Ecosystem specific 

{
    "binaries": [
        {
            "xen-devel": "4.4.4_28-61.23.2"
        }
    ]
}

SUSE:Linux Enterprise Server 11 SP4 / xen

Package

Name
xen
Purl
pkg:rpm/suse/xen&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
4.4.4_28-61.23.2

Ecosystem specific 

{
    "binaries": [
        {
            "xen-kmp-pae": "4.4.4_28_3.0.101_108.35-61.23.2",
            "xen-tools-domU": "4.4.4_28-61.23.2",
            "xen-kmp-default": "4.4.4_28_3.0.101_108.35-61.23.2",
            "xen-libs": "4.4.4_28-61.23.2",
            "xen-doc-html": "4.4.4_28-61.23.2",
            "xen-libs-32bit": "4.4.4_28-61.23.2",
            "xen-tools": "4.4.4_28-61.23.2",
            "xen": "4.4.4_28-61.23.2"
        }
    ]
}

SUSE:Linux Enterprise Server for SAP Applications 11 SP4 / xen

Package

Name
xen
Purl
pkg:rpm/suse/xen&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2011%20SP4

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
4.4.4_28-61.23.2

Ecosystem specific 

{
    "binaries": [
        {
            "xen-kmp-pae": "4.4.4_28_3.0.101_108.35-61.23.2",
            "xen-tools-domU": "4.4.4_28-61.23.2",
            "xen-kmp-default": "4.4.4_28_3.0.101_108.35-61.23.2",
            "xen-libs": "4.4.4_28-61.23.2",
            "xen-doc-html": "4.4.4_28-61.23.2",
            "xen-libs-32bit": "4.4.4_28-61.23.2",
            "xen-tools": "4.4.4_28-61.23.2",
            "xen": "4.4.4_28-61.23.2"
        }
    ]
}