[USN-4218-1] GNU C vulnerability

Leonidas S. Barbosa leo.barbosa at canonical.com
Tue Dec 10 14:59:24 UTC 2019

Ubuntu Security Notice USN-4218-1
December 10, 2019

eglibc vulnerability

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

- Ubuntu 14.04 ESM
- Ubuntu 12.04 ESM


GNU C could be made to execute arbitrary code or cause a crash
if it received a specially crafted input.

Software Description:
- eglibc: GNU C Library


Jakub Wilk discovered that GNU C incorrectly handled certain memory alignments.
An attacker could possibly use this issue to execute arbitrary code or cause
a crash.

Update instructions:

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

Ubuntu 14.04 ESM:
  libc6                           2.19-0ubuntu6.15+esm1

Ubuntu 12.04 ESM:
  libc6                           2.15-0ubuntu10.22

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

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