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==========================================================================
Ubuntu Security Notice USN-4466-1
August 19, 2020

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

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

- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS

Summary:

curl could be made to expose sensitive information over the network.

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

Details:

Marc Aldorasi discovered that curl incorrectly handled the libcurl
CURLOPT_CONNECT_ONLY option. This could result in data being sent to the
wrong destination, possibly exposing sensitive information.

Update instructions:

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

Ubuntu 20.04 LTS:
  curl                            7.68.0-1ubuntu2.2
  libcurl3-gnutls                 7.68.0-1ubuntu2.2
  libcurl3-nss                    7.68.0-1ubuntu2.2
  libcurl4                        7.68.0-1ubuntu2.2

Ubuntu 18.04 LTS:
  curl                            7.58.0-2ubuntu3.10
  libcurl3-gnutls                 7.58.0-2ubuntu3.10
  libcurl3-nss                    7.58.0-2ubuntu3.10
  libcurl4                        7.58.0-2ubuntu3.10

Ubuntu 16.04 LTS:
  curl                            7.47.0-1ubuntu2.16
  libcurl3                        7.47.0-1ubuntu2.16
  libcurl3-gnutls                 7.47.0-1ubuntu2.16
  libcurl3-nss                    7.47.0-1ubuntu2.16

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

References:
  https://usn.ubuntu.com/4466-1
  CVE-2020-8231

Package Information:
  https://launchpad.net/ubuntu/+source/curl/7.68.0-1ubuntu2.2
  https://launchpad.net/ubuntu/+source/curl/7.58.0-2ubuntu3.10
  https://launchpad.net/ubuntu/+source/curl/7.47.0-1ubuntu2.16


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