curl vulnerabilities

8 August 2016

curl vulnerabilities

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

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

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

References

• CVE-2016-5419
• CVE-2016-5420
• CVE-2016-5421