[USN-3765-2] curl vulnerability

[Leonidas S. Barbosa]

==========================================================================
Ubuntu Security Notice USN-3765-2
September 17, 2018

curl vulnerability
==========================================================================

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

- Ubuntu 12.04 ESM

Summary:

curl could be made to run arbitrary code if it received a specially
crafted input.

Software Description:
- curl: HTTP, HTTPS, and FTP client and client libraries

Details:

USN-3765-1 fixed a vulnerability in curl. This update provides
the corresponding update for Ubuntu 12.04 ESM.

Original advisory details:

 It was discovered that curl incorrectly handled certain inputs.
 An attacker could possibly use this to execute arbitrary code.

Update instructions:

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

Ubuntu 12.04 ESM:
  curl                            7.22.0-3ubuntu4.23
  libcurl3                        7.22.0-3ubuntu4.23
  libcurl3-gnutls                 7.22.0-3ubuntu4.23
  libcurl3-nss                    7.22.0-3ubuntu4.23

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

References:
  https://usn.ubuntu.com/usn/usn-3765-2
  https://usn.ubuntu.com/usn/usn-3765-1
  CVE-2018-14618
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