exploit the possibilities

Ubuntu Security Notice USN-4007-1

Ubuntu Security Notice USN-4007-1
Posted Jun 5, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4007-1 - Federico Manuel Bento discovered that the Linux kernel did not properly apply Address Space Layout Randomization in some situations for setuid a.out binaries. A local attacker could use this to improve the chances of exploiting an existing vulnerability in a setuid a.out binary. As a hardening measure, this update disables a.out support.

tags | advisory, kernel, local
systems | linux, ubuntu
advisories | CVE-2019-11191
MD5 | bf89fafd5ab5860200028bf8a6197cb0

Ubuntu Security Notice USN-4007-1

Change Mirror Download
==========================================================================
Ubuntu Security Notice USN-4007-1
June 04, 2019

linux, linux-aws, linux-gcp, linux-kvm, linux-oem, linux-oracle,
linux-raspi2, linux-snapdragon vulnerability
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 18.04 LTS

Summary:

A system hardening measure could be bypassed.

Software Description:
- linux: Linux kernel
- linux-aws: Linux kernel for Amazon Web Services (AWS) systems
- linux-gcp: Linux kernel for Google Cloud Platform (GCP) systems
- linux-kvm: Linux kernel for cloud environments
- linux-meta:
- linux-oem: Linux kernel for OEM processors
- linux-oracle: Linux kernel for Oracle Cloud systems
- linux-raspi2: Linux kernel for Raspberry Pi 2
- linux-snapdragon: Linux kernel for Snapdragon processors

Details:

Federico Manuel Bento discovered that the Linux kernel did not properly
apply Address Space Layout Randomization (ASLR) in some situations for
setuid a.out binaries. A local attacker could use this to improve the
chances of exploiting an existing vulnerability in a setuid a.out binary.

As a hardening measure, this update disables a.out support.

Update instructions:

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

Ubuntu 18.04 LTS:
linux-image-4.15.0-1014-oracle 4.15.0-1014.16
linux-image-4.15.0-1033-gcp 4.15.0-1033.35
linux-image-4.15.0-1035-kvm 4.15.0-1035.35
linux-image-4.15.0-1037-raspi2 4.15.0-1037.39
linux-image-4.15.0-1039-oem 4.15.0-1039.44
linux-image-4.15.0-1040-aws 4.15.0-1040.42
linux-image-4.15.0-1054-snapdragon 4.15.0-1054.58
linux-image-4.15.0-51-generic 4.15.0-51.55
linux-image-4.15.0-51-generic-lpae 4.15.0-51.55
linux-image-4.15.0-51-lowlatency 4.15.0-51.55
linux-image-aws 4.15.0.1040.39
linux-image-gcp 4.15.0.1033.35
linux-image-generic 4.15.0.51.53
linux-image-generic-lpae 4.15.0.51.53
linux-image-kvm 4.15.0.1035.35
linux-image-lowlatency 4.15.0.51.53
linux-image-oem 4.15.0.1039.43
linux-image-oracle 4.15.0.1014.17
linux-image-raspi2 4.15.0.1037.35
linux-image-snapdragon 4.15.0.1054.57

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:
https://usn.ubuntu.com/4007-1
CVE-2019-11191

Package Information:
https://launchpad.net/ubuntu/+source/linux/4.15.0-51.55
https://launchpad.net/ubuntu/+source/linux-aws/4.15.0-1040.42
https://launchpad.net/ubuntu/+source/linux-gcp/4.15.0-1033.35
https://launchpad.net/ubuntu/+source/linux-kvm/4.15.0-1035.35
https://launchpad.net/ubuntu/+source/linux-meta/4.15.0.51.53
https://launchpad.net/ubuntu/+source/linux-oem/4.15.0-1039.44
https://launchpad.net/ubuntu/+source/linux-oracle/4.15.0-1014.16
https://launchpad.net/ubuntu/+source/linux-raspi2/4.15.0-1037.39
https://launchpad.net/ubuntu/+source/linux-snapdragon/4.15.0-1054.58

Comments

RSS Feed Subscribe to this comment feed

No comments yet, be the first!

Login or Register to post a comment

File Archive:

November 2019

  • Su
  • Mo
  • Tu
  • We
  • Th
  • Fr
  • Sa
  • 1
    Nov 1st
    28 Files
  • 2
    Nov 2nd
    1 Files
  • 3
    Nov 3rd
    1 Files
  • 4
    Nov 4th
    12 Files
  • 5
    Nov 5th
    19 Files
  • 6
    Nov 6th
    65 Files
  • 7
    Nov 7th
    22 Files
  • 8
    Nov 8th
    18 Files
  • 9
    Nov 9th
    1 Files
  • 10
    Nov 10th
    1 Files
  • 11
    Nov 11th
    11 Files
  • 12
    Nov 12th
    65 Files
  • 13
    Nov 13th
    27 Files
  • 14
    Nov 14th
    22 Files
  • 15
    Nov 15th
    9 Files
  • 16
    Nov 16th
    0 Files
  • 17
    Nov 17th
    0 Files
  • 18
    Nov 18th
    0 Files
  • 19
    Nov 19th
    0 Files
  • 20
    Nov 20th
    0 Files
  • 21
    Nov 21st
    0 Files
  • 22
    Nov 22nd
    0 Files
  • 23
    Nov 23rd
    0 Files
  • 24
    Nov 24th
    0 Files
  • 25
    Nov 25th
    0 Files
  • 26
    Nov 26th
    0 Files
  • 27
    Nov 27th
    0 Files
  • 28
    Nov 28th
    0 Files
  • 29
    Nov 29th
    0 Files
  • 30
    Nov 30th
    0 Files

Top Authors In Last 30 Days

File Tags

Systems

packet storm

© 2019 Packet Storm. All rights reserved.

Services
Security Services
Hosting By
Rokasec
close