USN-3262-1: curl vulnerability

Ubuntu Security Notice USN-3262-1

20th April, 2017

curl vulnerability

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

  • Ubuntu 17.04


Applications using curl could allow unintended access over the network.

Software description

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


It was discovered that curl incorrectly handled client certificates when
resuming a TLS session. A remote attacker could use this to hijack a
previously authenticated connection.

Update instructions

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

Ubuntu 17.04:
libcurl3-nss 7.52.1-4ubuntu1.1
curl 7.52.1-4ubuntu1.1
libcurl3-gnutls 7.52.1-4ubuntu1.1
libcurl3 7.52.1-4ubuntu1.1

To update your system, please follow these instructions:

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