Explore top 10 tips to secure your open-source projects now. Read More

×
Alerts This Week
Warning Icon 1 530
Alerts This Week
Warning Icon 1 530

Ubuntu 12.04 ESM USN-3983-2 Critical: Kernel Memory Exposures

ubuntu
Calendar Grey May 15, 2019
Dist Ubuntu Esm H88
Uncover vital enhancements to the Linux kernel that tackle various security flaws impacting Ubuntu Trusty HWE.
Several security issues were fixed in the Linux kernel.

Summary

Several security issues were fixed in the Linux kernel.

Software Description:

- linux-lts-trusty: Linux hardware enablement kernel from Trusty for Precise ESM

Details:

USN-3983-1 fixed vulnerabilities in the Linux kernel for Ubuntu 14.04

LTS. This update provides the corresponding updates for the Linux

Hardware Enablement (HWE) kernel from Ubuntu 14.04 LTS for Ubuntu

12.04 LTS.

Ke Sun, Henrique Kawakami, Kekai Hu, Rodrigo Branco, Giorgi Maisuradze, Dan

Horea Lutas, Andrei Lutas, Volodymyr Pikhur, Stephan van Schaik, Alyssa

Milburn, Sebastian Österlund, Pietro Frigo, Kaveh Razavi, Herbert Bos,

Cristiano Giuffrida, Moritz Lipp, Michael Schwarz, and Daniel Gruss

discovered that memory previously stored in microarchitectural fill buffers

of an Intel CPU core may be exposed to a malicious process that is

executing on the same CPU core. A local attacker could use this to expose

sensitive information. (CVE-2018-12130)

Brandon Falk, Ke Sun, Henrique Kawakami, Ke...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory ubuntu memory exposure linux-lts-trusty malicious process

Update Instructions

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

Ubuntu 12.04 ESM:
  linux-image-3.13.0-170-generic  3.13.0-170.220~12.04.2+signed1
  linux-image-3.13.0-170-generic-lpae  3.13.0-170.220~12.04.2
  linux-image-3.13.0-170-lowlatency  3.13.0-170.220~12.04.2+signed1
  linux-image-generic-lpae-lts-trusty  3.13.0.170.158
  linux-image-generic-lts-trusty  3.13.0.170.158

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

Please note that fully mitigating the Microarchitectural Data Sampling
(MDS) issues (CVE-2018-12126, CVE-2018-12127, CVE-2018-12130, and
CVE-2019-11091) requires corresponding processor microcode/firmware
updates or, in virtual environments, hypervisor updates.

References

https://ubuntu.com/security/notices/USN-3983-2

https://ubuntu.com/security/notices/USN-3983-1

CVE-2018-12126, CVE-2018-12127, CVE-2018-12130, CVE-2019-11091,

https://wiki.ubuntu.com/SecurityTeam/KnowledgeBase/MDS

Severity
critical
Lowest
Low
Medium
High
Critical

May 15, 2019

Topics%20covered

Topics Covered

security advisory ubuntu memory exposure linux-lts-trusty malicious process

Package Information

Get the latest News and Insights

Get the latest Linux and open source security news straight to your inbox.