USN-3323-1: GNU C Library vulnerability

Ubuntu Security Notice USN-3323-1

19th June, 2017

eglibc, glibc vulnerability

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

• Ubuntu 17.04



• Ubuntu 16.10



• Ubuntu 16.04 LTS



• Ubuntu 14.04 LTS

Summary

Gnu C library could be made to run programs as an administrator.

Software description

• eglibc
  - GNU C Library
  
  





• glibc
  - GNU C Library
  
  

Details

It was discovered that the GNU C library did not properly handle memory
when processing environment variables for setuid programs. A local attacker
could use this in combination with another vulnerability to gain
administrative privileges.

Update instructions

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

Ubuntu 17.04:

Ubuntu 16.10:

Ubuntu 16.04 LTS:

Ubuntu 14.04 LTS:

To update your system, please follow these instructions: