CVE-2017-2784

An exploitable free of a stack pointer vulnerability exists in the x509
certificate parsing code of ARM mbed TLS before 1.3.19, 2.x before 2.1.7,
and 2.4.x before 2.4.2. A specially crafted x509 certificate, when parsed
by mbed TLS library, can cause an invalid free of a stack pointer leading
to a potential remote code execution. In order to exploit this
vulnerability, an attacker can act as either a client or a server on a
network to deliver malicious x509 certificates to vulnerable applications.

Bugs

• <http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=857560&gt;
• <http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=857561&gt;
• <https://bugs.launchpad.net/ubuntu/+source/mbedtls/+bug/1672686&gt;