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Ubuntu 12.04 ESM: USN-3338-1 Critical: Kernel Administrative Privileges

ubuntu
Calendar Grey June 21, 2017
Dist Ubuntu Esm H88
Multiple vulnerabilities addressed in the Linux kernel for Ubuntu 20.04. Update advised for improved security.
Several security issues were fixed in the Linux kernel.

Summary

Several security issues were fixed in the Linux kernel.

Software Description:

- linux: Linux kernel

Details:

It was discovered that the stack guard page for processes in the Linux

kernel was not sufficiently large enough to prevent overlapping with the

heap. An attacker could leverage this with another vulnerability to execute

arbitrary code and gain administrative privileges (CVE-2017-1000364)

Jesse Hertz and Tim Newsham discovered that the Linux netfilter

implementation did not correctly perform validation when handling 32 bit

compatibility IPT_SO_SET_REPLACE events on 64 bit platforms. A local

unprivileged attacker could use this to cause a denial of service (system

crash) or execute arbitrary code with administrative privileges.

(CVE-2016-4997)

Topics%20covered

Topics Covered

security advisory security issue critical DoS Ubuntu kernel administrative privileges

Update Instructions

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 12.04 ESM:
  linux-image-3.2.0-128-generic   3.2.0-128.173
  linux-image-3.2.0-128-generic-pae  3.2.0-128.173
  linux-image-3.2.0-128-highbank  3.2.0-128.173
  linux-image-3.2.0-128-omap      3.2.0-128.173
  linux-image-3.2.0-128-powerpc-smp  3.2.0-128.173
  linux-image-3.2.0-128-powerpc64-smp  3.2.0-128.173
  linux-image-3.2.0-128-virtual   3.2.0-128.173
  linux-image-generic             3.2.0.128.142
  linux-image-generic-pae         3.2.0.128.142
  linux-image-highbank            3.2.0.128.142
  linux-image-omap                3.2.0.128.142
  linux-image-powerpc-smp         3.2.0.128.142
  linux-image-powerpc64-smp       3.2.0.128.142
  linux-image-virtual             3.2.0.128.142

After a standard system update you need to reboot your computer to make
all the necessary changes.

ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
reinstall all third party kernel modules you might have installed.
Unless you manually uninstalled the standard kernel metapackages
(e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual,
linux-powerpc), a standard system upgrade will automatically perform
this as well.

References

CVE-2016-4997, CVE-2017-1000364

Severity
critical
Lowest
Low
Medium
High
Critical

June 21, 2017

Topics%20covered

Topics Covered

security advisory security issue critical DoS Ubuntu kernel administrative privileges

Package Information

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