Security update for xen

Announcement ID: SUSE-SU-2017:3212-1
Rating: important
References:
Cross-References:
CVSS scores:
  • CVE-2017-15289 ( SUSE ): 6.0 CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H
  • CVE-2017-15289 ( NVD ): 6.0 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H
  • CVE-2017-15289 ( NVD ): 6.0 CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H
  • CVE-2017-15592 ( SUSE ): 8.1 CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
  • CVE-2017-15592 ( NVD ): 8.8 CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
  • CVE-2017-15595 ( SUSE ): 8.1 CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
  • CVE-2017-15595 ( NVD ): 8.8 CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
  • CVE-2017-15597 ( SUSE ): 8.1 CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
  • CVE-2017-15597 ( NVD ): 9.1 CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Affected Products:
  • SUSE Linux Enterprise Point of Service 11 SP3
  • SUSE Linux Enterprise Server 11 SP3 LTSS 11-SP3

An update that solves four vulnerabilities and has two security fixes can now be installed.

Description:

This update for xen fixes several issues.

These security issues were fixed:

  • bsc#1068187: Failure to recognize errors in the Populate on Demand (PoD) code allowed for DoS (XSA-246)
  • bsc#1068191: Missing p2m error checking in PoD code allowed unprivileged guests to retain a writable mapping of freed memory leading to information leaks, privilege escalation or DoS (XSA-247).
  • CVE-2017-15289: The mode4and5 write functions allowed local OS guest privileged users to cause a denial of service (out-of-bounds write access and Qemu process crash) via vectors related to dst calculation (bsc#1063123)
  • CVE-2017-15597: A grant copy operation being done on a grant of a dying domain allowed a malicious guest administrator to corrupt hypervisor memory, allowing for DoS or potentially privilege escalation and information leaks (bsc#1061075).
  • 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-2017-15592: x86 HVM guest OS users were able to cause a DoS (hypervisor crash) or possibly gain privileges because self-linear shadow mappings were mishandled for translated guests (bsc#1061086).

Patch Instructions:

To install this SUSE 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 Point of Service 11 SP3
    zypper in -t patch sleposp3-xen-13366=1
  • SUSE Linux Enterprise Server 11 SP3 LTSS 11-SP3
    zypper in -t patch slessp3-xen-13366=1

Package List:

  • SUSE Linux Enterprise Point of Service 11 SP3 (i586)
    • xen-tools-domU-4.2.5_21-45.16.1
    • xen-libs-4.2.5_21-45.16.1
    • xen-kmp-pae-4.2.5_21_3.0.101_0.47.106.8-45.16.1
    • xen-kmp-default-4.2.5_21_3.0.101_0.47.106.8-45.16.1
  • SUSE Linux Enterprise Server 11 SP3 LTSS 11-SP3 (x86_64 i586)
    • xen-tools-domU-4.2.5_21-45.16.1
    • xen-libs-4.2.5_21-45.16.1
    • xen-kmp-default-4.2.5_21_3.0.101_0.47.106.8-45.16.1
  • SUSE Linux Enterprise Server 11 SP3 LTSS 11-SP3 (i586)
    • xen-kmp-pae-4.2.5_21_3.0.101_0.47.106.8-45.16.1
  • SUSE Linux Enterprise Server 11 SP3 LTSS 11-SP3 (x86_64)
    • xen-doc-pdf-4.2.5_21-45.16.1
    • xen-libs-32bit-4.2.5_21-45.16.1
    • xen-4.2.5_21-45.16.1
    • xen-tools-4.2.5_21-45.16.1
    • xen-doc-html-4.2.5_21-45.16.1

References: