[SECURITY] [DLA 869-1] cgiemail security update

Package : cgiemail
Version : 1.6-37+deb7u1
CVE ID : CVE-2017-5613 CVE-2017-5614 CVE-2017-5615 CVE-2017-5616
Debian Bug : 852031

The cPanel Security Team discovered several security vulnerabilities in
cgiemail, a CGI program used to create HTML forms for sending mails:

CVE-2017-5613

A format string injection vulnerability allowed to supply arbitrary
format strings to cgiemail and cgiecho. A local attacker with
permissions to provide a cgiemail template could use this
vulnerability to execute code as webserver user.
Format strings in cgiemail tempaltes are now restricted to simple
%s, %U and %H sequences.

CVE-2017-5614

An open redirect vulnerability in cgiemail and cgiecho binaries
could be exploited by a local attacker to force redirect to an
arbitrary URL. These redirects are now limited to the domain that
handled the request.

CVE-2017-5615

A vulnerability in cgiemail and cgiecho binaries allowed injection
of additional HTTP headers. Newline characters are now stripped
from the redirect location to protect against this.

CVE-2017-5616

Missing escaping of the addendum parameter lead to a reflected
cross-site (XSS) vulnerability in cgiemail and cgiecho binaries.
The output is now html escaped.

For Debian 7 "Wheezy", these problems have been fixed in version
1.6-37+deb7u1.

We recommend that you upgrade your cgiemail 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

Jonas Meurer