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Ubuntu Security Notice USN-3048-1
August 08, 2016

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

– Ubuntu 16.04 LTS
– Ubuntu 14.04 LTS
– Ubuntu 12.04 LTS

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)

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.

References:
http://www.ubuntu.com/usn/usn-3048-1
CVE-2016-5419, CVE-2016-5420, CVE-2016-5421

Package Information:
https://launchpad.net/ubuntu/+source/curl/7.47.0-1ubuntu2.1
https://launchpad.net/ubuntu/+source/curl/7.35.0-1ubuntu2.8
https://launchpad.net/ubuntu/+source/curl/7.22.0-3ubuntu4.16

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