[USN-4129-2] curl vulnerability

[Leonidas S. Barbosa]

==========================================================================
Ubuntu Security Notice USN-4129-2
September 12, 2019

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

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

- Ubuntu 14.04 ESM
- Ubuntu 12.04 ESM

Summary:

curl could be made to crash or possibly execute arbitrary code
if it incorrectly handled memory during TFTP transfers.

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

Details:

USN-4129-1 fixed a vulnerability in curl. This update provides
the corresponding update for Ubuntu 12.04 ESM and 14.04 ESM.

Original advisory details:

 Thomas Vegas discovered that curl incorrectly handled memory during TFTP
 transfers. A remote attacker could use this issue to crash curl, resulting
 in a denial of service, or possibly execute arbitrary code.

Update instructions:

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

Ubuntu 14.04 ESM:
  curl                            7.35.0-1ubuntu2.20+esm3
  libcurl3                        7.35.0-1ubuntu2.20+esm3
  libcurl3-gnutls                 7.35.0-1ubuntu2.20+esm3
  libcurl3-nss                    7.35.0-1ubuntu2.20+esm3

Ubuntu 12.04 ESM:
  curl                            7.22.0-3ubuntu4.27
  libcurl3                        7.22.0-3ubuntu4.27
  libcurl3-gnutls                 7.22.0-3ubuntu4.27
  libcurl3-nss                    7.22.0-3ubuntu4.27

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

References:
  https://usn.ubuntu.com/4129-2
  https://usn.ubuntu.com/4129-1
  CVE-2019-5482
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