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Ubuntu Security Notice USN-3805-1
October 31, 2018

curl vulnerabilities
==========================================================================

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

- Ubuntu 18.10
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS

Summary:

Several security issues were fixed in curl.

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

Details:

Harry Sintonen discovered that curl incorrectly handled SASL
authentication. A remote attacker could use this issue to cause curl to
crash, resulting in a denial of service, or possibly execute arbitrary
code. (CVE-2018-16839)

Brian Carpenter discovered that curl incorrectly handled memory when
closing certain handles. A remote attacker could use this issue to cause
curl to crash, resulting in a denial of service, or possibly execute
arbitrary code. (CVE-2018-16840)

Brian Carpenter discovered that the curl command-line tool incorrectly
handled error messages. A remote attacker could possibly use this issue to
obtain sensitive information. (CVE-2018-16842)

Update instructions:

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

Ubuntu 18.10:
  curl                            7.61.0-1ubuntu2.2
  libcurl3-gnutls                 7.61.0-1ubuntu2.2
  libcurl3-nss                    7.61.0-1ubuntu2.2
  libcurl4                        7.61.0-1ubuntu2.2

Ubuntu 18.04 LTS:
  curl                            7.58.0-2ubuntu3.5
  libcurl3-gnutls                 7.58.0-2ubuntu3.5
  libcurl3-nss                    7.58.0-2ubuntu3.5
  libcurl4                        7.58.0-2ubuntu3.5

Ubuntu 16.04 LTS:
  curl                            7.47.0-1ubuntu2.11
  libcurl3                        7.47.0-1ubuntu2.11
  libcurl3-gnutls                 7.47.0-1ubuntu2.11
  libcurl3-nss                    7.47.0-1ubuntu2.11

Ubuntu 14.04 LTS:
  curl                            7.35.0-1ubuntu2.19
  libcurl3                        7.35.0-1ubuntu2.19
  libcurl3-gnutls                 7.35.0-1ubuntu2.19
  libcurl3-nss                    7.35.0-1ubuntu2.19

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

References:
  https://usn.ubuntu.com/usn/usn-3805-1
  CVE-2018-16839, CVE-2018-16840, CVE-2018-16842

Package Information:
  https://launchpad.net/ubuntu/+source/curl/7.61.0-1ubuntu2.2
  https://launchpad.net/ubuntu/+source/curl/7.58.0-2ubuntu3.5
  https://launchpad.net/ubuntu/+source/curl/7.47.0-1ubuntu2.11
  https://launchpad.net/ubuntu/+source/curl/7.35.0-1ubuntu2.19