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Ubuntu 20.04 LTS USN-3750-1 High: Kernel Denial of Service Vulnerability

ubuntu
Calendar Grey August 21, 2018
Dist Ubuntu Esm H88
Keep your Ubuntu 18.04 LTS secure by updating base-files regularly to protect against vulnerabilities and minimize risks of potential exploits
base-files could be made to hang or overwrite files as the administrator.

Summary

base-files could be made to hang or overwrite files as the administrator.

Software Description:

- base-files: Debian base system miscellaneous files

Details:

Sander Bos discovered that the MOTD update script incorrectly handled

temporary files. A local attacker could use this issue to cause a denial of

service, or possibly escalate privileges if kernel symlink restrictions

were disabled.

Topics%20covered

Topics Covered

security advisory denial of service critical Ubuntu base-files

Update Instructions

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

Ubuntu 18.04 LTS:
  base-files                      10.1ubuntu2.2

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

References

https://ubuntu.com/security/notices/USN-3748-1

CVE-2018-6557

Severity
important
Lowest
Low
Medium
High
Critical

August 21, 2018

Topics%20covered

Topics Covered

security advisory denial of service critical Ubuntu base-files

Package Information

https://launchpad.net/ubuntu/+source/base-files/10.1ubuntu2.2

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