ESB-2018.3431 - [Debian] mono: Multiple vulnerabilities 2018-11-02

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2018.3431
                     DLA 1564-1: mono security update
                              2 November 2018

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        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           mono
Publisher:         Debian
Operating System:  Debian GNU/Linux 8
Impact/Access:     Execute Arbitrary Code/Commands -- Remote with User Interaction
                   Create Arbitrary Files          -- Remote with User Interaction
                   Denial of Service               -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2018-1002208 CVE-2009-0689 

Reference:         ESB-2014.0361
                   ESB-2010.0555
                   ESB-2010.0533
                   ESB-2010.0282
                   ESB-2010.0254
                   ASB-2009.1102
                   ASB-2009.1141.2

Original Bulletin: 
   https://security-tracker.debian.org/tracker/DLA-1564-1

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Package        : mono
Version        : 3.2.8+dfsg-10+deb8u1
CVE ID         : CVE-2009-0689

It was found that Mono's string-to-double parser may crash, on
specially crafted input. This could lead to arbitrary code execution.

CVE-2018-1002208: Mono embeds the sharplibzip library which is
vulnerable to directory traversal, allowing attackers to write to
arbitrary files via a ../ (dot dot slash) in a Zip archive entry that
is mishandled during extraction. This vulnerability is also known as
'Zip-Slip'.

The Mono developers intend to entirely remove sharplibzip from the
sources and do not plan to fix this issue. It is therefore recommended
to fetch the latest sharplibzip version by using the nuget package
manager instead. The embedded version should not be used with
untrusted zip files.

For Debian 8 "Jessie", this problem has been fixed in version
3.2.8+dfsg-10+deb8u1.

We recommend that you upgrade your mono 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
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