Debian: DSA-4353-1 Critical: PHP7.0 Denial Of Service And XSS

Multiple security issues were found in PHP, a widely-used open source
general purpose scripting language: The EXIF module was susceptible to
denial of service/information disclosure when parsing malformed images,
the Apache module allowed cross-site-scripting via the body of a
"Transfer-Encoding: chunked" request and the IMAP extension performed
insufficient input validation which can result in the execution of
arbitrary shell commands in the imap_open() function and denial of
service in the imap_mail() function.

For the stable distribution (stretch), these problems have been fixed in
version 7.0.33-0+deb9u1.

We recommend that you upgrade your php7.0 packages.

For the detailed security status of php7.0 please refer to
its security tracker page at:

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