USN-3001-1 Linux kernel (Vivid HWE) vulnerabilities


Severity

High

Vendor

Canonical Ubuntu

Versions Affected
  • Canonical Ubuntu 14.04 LTS
Description

Justin Yackoski discovered that the Atheros L2 Ethernet Driver in the Linux kernel incorrectly enables scatter/gather I/O. A remote attacker could use this to obtain potentially sensitive information from kernel memory. (CVE-2016-2117)

Jann Horn discovered that eCryptfs improperly attempted to use the mmap() handler of a lower filesystem that did not implement one, causing a recursive page fault to occur. A local unprivileged attacker could use to cause a denial of service (system crash) or possibly execute arbitrary code with administrative privileges. (CVE-2016-1583)

Jason A. Donenfeld discovered multiple out-of-bounds reads in the OZMO USB over wifi device drivers in the Linux kernel. A remote attacker could use this to cause a denial of service (system crash) or obtain potentially sensitive information from kernel memory. (CVE-2015-4004)

Ralf Spenneberg discovered that the Linux kernel's GTCO digitizer USB device driver did not properly validate endpoint descriptors. An attacker with physical access could use this to cause a denial of service (system crash). (CVE-2016-2187)

Hector Marco and Ismael Ripoll discovered that the Linux kernel would improperly disable Address Space Layout Randomization (ASLR) for x86 processes running in 32 bit mode if stack-consumption resource limits were disabled. A local attacker could use this to make it easier to exploit an existing vulnerability in a setuid/setgid program. (CVE-2016-3672)

Andrey Konovalov discovered that the CDC Network Control Model USB driver in the Linux kernel did not cancel work events queued if a later error occurred, resulting in a use-after-free. An attacker with physical access could use this to cause a denial of service (system crash). (CVE-2016-3951)

It was discovered that an out-of-bounds write could occur when handling incoming packets in the USB/IP implementation in the Linux kernel. A remote attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2016-3955)

Vitaly Kuznetsov discovered that the Linux kernel did not properly suppress hugetlbfs support in X86 paravirtualized guests. An attacker in the guest OS could cause a denial of service (guest system crash). (CVE-2016-3961)

Kangjie Lu discovered an information leak in the ANSI/IEEE 802.2 LLC type 2 Support implementations in the Linux kernel. A local attacker could use this to obtain potentially sensitive information from kernel memory. (CVE-2016-4485)

Kangjie Lu discovered an information leak in the routing netlink socket interface (rtnetlink) implementation in the Linux kernel. A local attacker could use this to obtain potentially sensitive information from kernel memory. (CVE-2016-4486)

Jann Horn discovered that the InfiniBand interfaces within the Linux kernel could be coerced into overwriting kernel memory. A local unprivileged attacker could use this to possibly gain administrative privileges on systems where InifiniBand related kernel modules are loaded. (CVE-2016-4565)

It was discovered that in some situations the Linux kernel did not handle propagated mounts correctly. A local unprivileged attacker could use this to cause a denial of service (system crash). (CVE-2016-4581)

Affected Pivotal Products and Versions

Severity is high unless otherwise noted.

  • Cloud Foundry BOSH stemcells 3146.1 versions prior to 3146.15 AND other versions prior to 3232.7 are vulnerable
  • Pivotal Elastic Runtime 1.6.x versions prior to 1.6.27 AND 1.7.x versions prior to 1.7.5
  • Pivotal Cloud Foundry Ops Manager versions prior to 1.6.15 AND 1.7.x versions prior to 1.7.6
  • RabbitMQ for Pivotal Cloud Foundry versions prior to 1.5.12
  • Redis for Pivotal Cloud Foundry versions prior to 1.4.26 AND 1.5.x versions prior to 1.5.14
  • RiakCS for Pivotal Cloud Foundry versions prior to 1.5.12
  • Pivotal Cloud Foundry Single Sign-on versions prior to 1.1.1
  • Spring Cloud services versions prior to 1.0.9
Mitigation

Users of affected versions should apply the following mitigation:

  • The Cloud Foundry project recommends that Cloud Foundry upgrade BOSH stemcell 3146.x versions to 3146.16 OR other versions to 3232.8
  • Upgrade Pivotal Elastic Runtime 1.6.x versions to 1.6.28 OR 1.7.x versions to 1.7.6
  • Pivotal Cloud Foundry Ops Manager versions prior to 1.6.16 should be upgraded to that release or higher AND 1.7.x versions should be upgraded to 1.7.7 or higher
  • RabbitMQ for Pivotal Cloud Foundry versions prior to 1.6.2 should be upgraded to that release or higher
  • Redis for Pivotal Cloud Foundry versions prior to 1.4.27 should be upgraded to that release or higher AND 1.5.x versions prior to 1.5.15 should be upgraded to that release or higher
  • Pivotal Cloud Foundry Single Sign-On versions prior to 1.1.4 should be upgraded to that release or higher
  • Spring Cloud services versions prior to 1.0.10 should be upgraded to that release or higher

Special Note for 1.7.x Ops Manager Deployments

The 1.7.x release line of Ops Manager includes a new feature that allows tile stemcells to “float”, which will allow Operators to update their Ops Manager deployment once rather than installing all new Services product releases. If you upgrade one Service tile in Ops Manager 1.7.x with the newly released stemcell, all tiles will automatically upgrade. For more information about the floating stemcell feature, refer to this document.

Credit

Justin Yackoski, Jann Horn, Jason A. Donenfeld, Ralf Spenneberg, Hector Marco and Ismael Ripoll, Andrey Konovalov, Vitaly Kuznetsov, Kangjie Lu

References