An asterisk security update has been released for Debian GNU/Linux 7 LTS

Package : asterisk
Version : 1:1.8.13.1~dfsg1-3+deb7u7
CVE ID : CVE-2017-14100
Debian Bug : 873908

A security vulnerability was discovered in Asterisk, an Open
Source PBX and telephony toolkit, that may lead to unauthorized
command execution.

The app_minivm module has an "externnotify" program configuration option
that is executed by the MinivmNotify dialplan application. The
application uses the caller-id name and number as part of a built
string passed to the OS shell for interpretation and execution. Since
the caller-id name and number can come from an untrusted source, a
crafted caller-id name or number allows an arbitrary shell command
injection.

For Debian 7 "Wheezy", these problems have been fixed in version
1:1.8.13.1~dfsg1-3+deb7u7.

We recommend that you upgrade your asterisk packages.

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS

  Asterisk security update for Debian 7 LTS