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Ubuntu 14.04 ESM: USN-3968-2 Moderate: Sudo File Overwrite Risk

ubuntu
Calendar Grey May 29, 2019
Dist Ubuntu Esm H88
To fix a serious security issue in Ubuntu 14.04 ESM related to sudo, updating is essential to prevent file overwrites by attackers. Follow the outlined steps to enhance your system security:
Sudo could be made to overwrite files if it received a specially crafted input.

Summary

Sudo could be made to overwrite files if it received a specially

crafted input.

Software Description:

- sudo: Provide limited super user privileges to specific users

Details:

USN-3968-1 fixed a vulnerability in Sudo. This update provides

the corresponding update for Ubuntu 14.04 ESM.

Original advisory details:

 It was discovered that Sudo did not properly parse the contents of

 /proc/[pid]/stat when attempting to determine its controlling tty. A

 local attacker in some configurations could possibly use this to

 overwrite any file on the filesystem, bypassing intended permissions.

 (CVE-2017-1000368)

Topics%20covered

Topics Covered

security advisory file overwrite Ubuntu sudo local attack

Update Instructions

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

Ubuntu 14.04 ESM:
  sudo                            1.8.9p5-1ubuntu1.5+esm1
  sudo-ldap                       1.8.9p5-1ubuntu1.5+esm1

In general, a standard system update will make all the necessary
changes.

References

  https://ubuntu.com/security/notices/USN-3968-2

  https://ubuntu.com/security/notices/USN-3968-1

  CVE-2017-1000368

Severity
important
Lowest
Low
Medium
High
Critical

May 29, 2019

Topics%20covered

Topics Covered

security advisory file overwrite Ubuntu sudo local attack

Package Information

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