==========================================================================
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://usn.ubuntu.com/usn/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

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==========================================================================
Ubuntu Security Notice USN-3993-2
May 22, 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 if it received a specially crafted data.

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

Details:

USN-3993-1 fixed a vulnerability in curl. This update provides
the corresponding update for Ubuntu 12.04 ESM and Ubuntu 14.04 ESM.

Original advisory details:

 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 14.04 ESM:
  curl                            7.35.0-1ubuntu2.20+esm2
  libcurl3                        7.35.0-1ubuntu2.20+esm2
  libcurl3-gnutls                 7.35.0-1ubuntu2.20+esm2
  libcurl3-nss                    7.35.0-1ubuntu2.20+esm2

Ubuntu 12.04 ESM:
  curl                            7.22.0-3ubuntu4.26
  libcurl3                        7.22.0-3ubuntu4.26
  libcurl3-gnutls                 7.22.0-3ubuntu4.26
  libcurl3-nss                    7.22.0-3ubuntu4.26

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

References:
  https://usn.ubuntu.com/usn/usn-3993-2
  https://usn.ubuntu.com/usn/usn-3993-1
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