[USN-3323-2] GNU C Library vulnerability

Tyler Hicks tyhicks at canonical.com
Thu Jun 29 18:37:43 UTC 2017


==========================================================================
Ubuntu Security Notice USN-3323-2
June 29, 2017

eglibc vulnerability
==========================================================================

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

- Ubuntu 12.04 ESM

Summary:

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

Software Description:
- eglibc: GNU C Library

Details:

USN-3323-1 fixed a vulnerability in the GNU C Library. This update provides the
corresponding update for Ubuntu 12.04 ESM.

Original advisory 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 12.04 ESM:
  libc6                           2.15-0ubuntu10.20

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

References:
  https://www.ubuntu.com/usn/usn-3323-2
  https://www.ubuntu.com/usn/usn-3323-1
  CVE-2017-1000366

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