Security update for xen

SUSE Security Update: Security update for xen
Announcement ID: SUSE-SU-2019:3309-1
Rating: important
References: #1154460 #1154464 #1157888 #1158003 #1158004 #1158005 #1158006 #1158007
Cross-References:CVE-2019-18422 CVE-2019-18423 CVE-2019-19577 CVE-2019-19578 CVE-2019-19579 CVE-2019-19580 CVE-2019-19581 CVE-2019-19582 CVE-2019-19583
Affected Products:
  • SUSE Linux Enterprise Module for Server Applications 15
  • SUSE Linux Enterprise Module for Basesystem 15

An update that fixes 9 vulnerabilities is now available.

Description:

This update for xen fixes the following issues:

  • CVE-2019-19581: Fixed a potential out of bounds on 32-bit Arm (bsc#1158003 XSA-307).
  • CVE-2019-19582: Fixed a potential infinite loop when x86 accesses to bitmaps with a compile time known size of 64 (bsc#1158003 XSA-307).
  • CVE-2019-19583: Fixed improper checks which could have allowed HVM/PVH guest userspace code to crash the guest,leading to a guest denial of service (bsc#1158004 XSA-308).
  • CVE-2019-19578: Fixed an issue where a malicious or buggy PV guest could have caused hypervisor crash resulting in denial of service affecting the entire host (bsc#1158005 XSA-309).
  • CVE-2019-19580: Fixed a privilege escalation where a malicious PV guest administrator could have been able to escalate their privilege to that of the host (bsc#1158006 XSA-310).
  • CVE-2019-19577: Fixed an issue where a malicious guest administrator could have caused Xen to access data structures while they are being modified leading to a crash (bsc#1158007 XSA-311).
  • CVE-2019-19579: Fixed a privilege escaltion where an untrusted domain with access to a physical device can DMA into host memory (bsc#1157888 XSA-306).
  • CVE-2019-18423: A malicious guest administrator may cause a hypervisor crash, resulting in a Denial of Service (DoS) (bsc#1154460 XSA-301).
  • CVE-2019-18422: A malicious ARM guest might contrive to arrange for critical Xen code to run with interrupts erroneously enabled. This could lead to data corruption, denial of service, or possibly even privilege escalation. However a precise attack technique has not been identified. (bsc#1154464 XSA-303)

Patch Instructions:

To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Alternatively you can run the command listed for your product:

  • SUSE Linux Enterprise Module for Server Applications 15:
    zypper in -t patch SUSE-SLE-Module-Server-Applications-15-2019-3309=1
  • SUSE Linux Enterprise Module for Basesystem 15:
    zypper in -t patch SUSE-SLE-Module-Basesystem-15-2019-3309=1

Package List:

  • SUSE Linux Enterprise Module for Server Applications 15 (x86_64):
    • xen-4.10.4_08-3.28.1
    • xen-debugsource-4.10.4_08-3.28.1
    • xen-devel-4.10.4_08-3.28.1
    • xen-tools-4.10.4_08-3.28.1
    • xen-tools-debuginfo-4.10.4_08-3.28.1
  • SUSE Linux Enterprise Module for Basesystem 15 (x86_64):
    • xen-debugsource-4.10.4_08-3.28.1
    • xen-libs-4.10.4_08-3.28.1
    • xen-libs-debuginfo-4.10.4_08-3.28.1
    • xen-tools-domU-4.10.4_08-3.28.1
    • xen-tools-domU-debuginfo-4.10.4_08-3.28.1

References: