Debian Security Advisory

DLA-1132-1 xen -- LTS security update

Date Reported:
11 Oct 2017
Affected Packages:
xen
Vulnerable:
Yes
Security database references:
In Mitre's CVE dictionary: CVE-2017-10912, CVE-2017-10913, CVE-2017-10914, CVE-2017-10915, CVE-2017-10918, CVE-2017-10920, CVE-2017-10921, CVE-2017-10922, CVE-2017-12135, CVE-2017-12137, CVE-2017-12855, CVE-2017-14316, CVE-2017-14317, CVE-2017-14318, CVE-2017-14319.
More information:

Multiple vulnerabilities have been discovered in the Xen hypervisor:

  • CVE-2017-10912

    Jann Horn discovered that incorrectly handling of page transfers might result in privilege escalation.

  • CVE-2017-10913 / CVE-2017-10914

    Jann Horn discovered that race conditions in grant handling might result in information leaks or privilege escalation.

  • CVE-2017-10915

    Andrew Cooper discovered that incorrect reference counting with shadow paging might result in privilege escalation.

  • CVE-2017-10918

    Julien Grall discovered that incorrect error handling in physical-to-machine memory mappings may result in privilege escalation, denial of service or an information leak.

  • CVE-2017-10920 / CVE-2017-10921 / CVE-2017-10922

    Jan Beulich discovered multiple places where reference counting on grant table operations was incorrect, resulting in potential privilege escalation

  • CVE-2017-12135

    Jan Beulich found multiple problems in the handling of transitive grants which could result in denial of service and potentially privilege escalation.

  • CVE-2017-12137

    Andrew Cooper discovered that incorrect validation of grants may result in privilege escalation.

  • CVE-2017-12855

    Jan Beulich discovered that incorrect grant status handling, thus incorrectly informing the guest that the grant is no longer in use.

  • CVE-2017-14316

    Matthew Daley discovered that the NUMA node parameter wasn't verified which which may result in privilege escalation.

  • CVE-2017-14317

    Eric Chanudet discovered that a race conditions in cxenstored might result in information leaks or privilege escalation.

  • CVE-2017-14318

    Matthew Daley discovered that incorrect validation of grants may result in a denial of service.

  • CVE-2017-14319

    Andrew Cooper discovered that insufficient grant unmapping checks may result in denial of service and privilege escalation.

For Debian 7 Wheezy, these problems have been fixed in version 4.1.6.lts1-9.

We recommend that you upgrade your xen packages.

Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: https://wiki.debian.org/LTS