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Ubuntu Security Notice USN-4129-1
September 11, 2019

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

- Ubuntu 19.04
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS

Summary:

Several security issues were fixed in curl.

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

Details:

Thomas Vegas discovered that curl incorrectly handled memory when using
Kerberos over FTP.  A remote attacker could use this issue to crash curl,
resulting in a denial of service. (CVE-2019-5481)

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. (CVE-2019-5482)

Update instructions:

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

Ubuntu 19.04:
  curl                            7.64.0-2ubuntu1.2
  libcurl3-gnutls                 7.64.0-2ubuntu1.2
  libcurl3-nss                    7.64.0-2ubuntu1.2
  libcurl4                        7.64.0-2ubuntu1.2

Ubuntu 18.04 LTS:
  curl                            7.58.0-2ubuntu3.8
  libcurl3-gnutls                 7.58.0-2ubuntu3.8
  libcurl3-nss                    7.58.0-2ubuntu3.8
  libcurl4                        7.58.0-2ubuntu3.8

Ubuntu 16.04 LTS:
  curl                            7.47.0-1ubuntu2.14
  libcurl3                        7.47.0-1ubuntu2.14
  libcurl3-gnutls                 7.47.0-1ubuntu2.14
  libcurl3-nss                    7.47.0-1ubuntu2.14

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

References:
  https://usn.ubuntu.com/4129-1
  CVE-2019-5481, CVE-2019-5482

Package Information:
  https://launchpad.net/ubuntu/+source/curl/7.64.0-2ubuntu1.2
  https://launchpad.net/ubuntu/+source/curl/7.58.0-2ubuntu3.8
  https://launchpad.net/ubuntu/+source/curl/7.47.0-1ubuntu2.14