[USN-3323-1] GNU C Library vulnerability

Marc Deslauriers marc.deslauriers at canonical.com
Mon Jun 19 16:59:50 UTC 2017


==========================================================================
Ubuntu Security Notice USN-3323-1
June 19, 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:
- glibc: GNU C Library
- eglibc: 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 versions:

Ubuntu 17.04:
  libc6                           2.24-9ubuntu2.2

Ubuntu 16.10:
  libc6                           2.24-3ubuntu2.2

Ubuntu 16.04 LTS:
  libc6                           2.23-0ubuntu9

Ubuntu 14.04 LTS:
  libc6                           2.19-0ubuntu6.13

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

References:
  https://www.ubuntu.com/usn/usn-3323-1
  CVE-2017-1000366

Package Information:
  https://launchpad.net/ubuntu/+source/glibc/2.24-9ubuntu2.2
  https://launchpad.net/ubuntu/+source/glibc/2.24-3ubuntu2.2
  https://launchpad.net/ubuntu/+source/glibc/2.23-0ubuntu9
  https://launchpad.net/ubuntu/+source/eglibc/2.19-0ubuntu6.13


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