=========================================================================Ubuntu Security Notice USN-3993-1
May 22, 2019

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

- Ubuntu 19.04
- Ubuntu 18.10
- 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:

Wenchao Li discovered that curl incorrectly handled memory in the
curl_url_set() function. A remote attacker could use this issue to cause
curl to crash, resulting in a denial of service, or possibly execute
arbitrary code. This issue only affected Ubuntu 19.04. (CVE-2019-5435)

It was discovered that curl incorrectly handled memory when receiving data
from a TFTP server. A remote attacker could use this issue to cause curl to
crash, resulting in a denial of service, or possibly execute arbitrary
code. (CVE-2019-5436)

Update instructions:

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

Ubuntu 19.04:
  curl                            7.64.0-2ubuntu1.1
  libcurl3-gnutls                 7.64.0-2ubuntu1.1
  libcurl3-nss                    7.64.0-2ubuntu1.1
  libcurl4                        7.64.0-2ubuntu1.1

Ubuntu 18.10:
  curl                            7.61.0-1ubuntu2.4
  libcurl3-gnutls                 7.61.0-1ubuntu2.4
  libcurl3-nss                    7.61.0-1ubuntu2.4
  libcurl4                        7.61.0-1ubuntu2.4

Ubuntu 18.04 LTS:
  curl                            7.58.0-2ubuntu3.7
  libcurl3-gnutls                 7.58.0-2ubuntu3.7
  libcurl3-nss                    7.58.0-2ubuntu3.7
  libcurl4                        7.58.0-2ubuntu3.7

Ubuntu 16.04 LTS:
  curl                            7.47.0-1ubuntu2.13
  libcurl3                        7.47.0-1ubuntu2.13
  libcurl3-gnutls                 7.47.0-1ubuntu2.13
  libcurl3-nss                    7.47.0-1ubuntu2.13

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

References:
  https://ubuntu.com/security/notices/USN-3993-1
  CVE-2019-5435, CVE-2019-5436

Package Information:
  https://launchpad.net/ubuntu/+source/curl/7.64.0-2ubuntu1.1
  https://launchpad.net/ubuntu/+source/curl/7.61.0-1ubuntu2.4
  https://launchpad.net/ubuntu/+source/curl/7.58.0-2ubuntu3.7
  https://launchpad.net/ubuntu/+source/curl/7.47.0-1ubuntu2.13