Debian: DSA-4390-1 Significant: LibreOffice File Inclusion Vulnerability

Alex Infuehr discovered a directory traversal vulnerability which could
result in the execution of Python script code when opening a malformed
document.

For the stable distribution (stretch), this problem has been fixed in
version 1:5.2.7-1+deb9u5. In addition this update fixes a bug in the
validation of signed PDFs; it would display an incomplete status message
when dealing with a partial signature.

We recommend that you upgrade your libreoffice packages.

For the detailed security status of libreoffice please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/source-package/libreoffice

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/