Ubuntu 16.04 LTS: USN-3048-1 High: Curl TLS Connection Issues

ubuntu

August 8, 2016

Several security issues were fixed in curl.

Summary

Several security issues were fixed in curl.

Software Description:

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

Details:

Bru Rom discovered that curl incorrectly handled client certificates when

resuming a TLS session. (CVE-2016-5419)

It was discovered that curl incorrectly handled client certificates when

reusing TLS connections. (CVE-2016-5420)

Marcelo Echeverria and Fernando Muñoz discovered that curl incorrectly

reused a connection struct, contrary to expectations. This issue only

applied to Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2016-5421)

Topics Covered

security advisory high ubuntu TLS curl client certificate connection reuse

Update Instructions

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

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

Ubuntu 14.04 LTS:
  libcurl3                        7.35.0-1ubuntu2.8
  libcurl3-gnutls                 7.35.0-1ubuntu2.8
  libcurl3-nss                    7.35.0-1ubuntu2.8

Ubuntu 12.04 LTS:
  libcurl3                        7.22.0-3ubuntu4.16
  libcurl3-gnutls                 7.22.0-3ubuntu4.16
  libcurl3-nss                    7.22.0-3ubuntu4.16

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