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<p class="MsoNormal"><span style="mso-fareast-language:EN-US">Hello Maxim,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="mso-fareast-language:EN-US">have a look to the first sentence:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">“A security vulnerability is (for example) when a user of Kamailio can cause Kamailio to crash or lock up by sending messages to the server process.”<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">So there is some limitation regarding vulnerability criticality defined in there. But of course (as I already mentioned), it might be improved to e.g. use CVSS scoring instead.</span><span lang="EN-GB" style="mso-fareast-language:EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="mso-fareast-language:EN-US">Cheers,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="mso-fareast-language:EN-US">Henning<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
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<p class="MsoNormal" style="margin-left:35.4pt"><b><span lang="EN-GB">From:</span></b><span lang="EN-GB"> Maxim Sobolev <sobomax@sippysoft.com>
<br>
<b>Sent:</b> Wednesday, September 2, 2020 9:15 PM<br>
<b>To:</b> Henning Westerholt <hw@skalatan.de><br>
<b>Cc:</b> Daniel-Constantin Mierla <miconda@gmail.com>; yufei.tao@gmail.com; Olle E. Johansson <oej@edvina.net>; Gerry | Rigatta <gjacobsen@rigatta.com>; Kamailio (SER) - Users Mailing List <sr-users@lists.kamailio.org>; jbrower@signalogic.com<br>
<b>Subject:</b> Re: [SR-Users] Kamailio vulnerable to header smuggling possible due to bypass of remove_hf<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-left:35.4pt"><span lang="EN-GB"><o:p> </o:p></span></p>
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<p class="MsoNormal" style="margin-left:35.4pt">On Wed, Sep 2, 2020 at 11:30 AM Henning Westerholt <<a href="mailto:hw@skalatan.de">hw@skalatan.de</a>> wrote:<o:p></o:p></p>
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<span lang="EN-GB">Hello Maxim,</span><o:p></o:p></p>
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<span lang="EN-GB"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:35.4pt">
<span lang="EN-GB">thank you for the clarification, appreciated.</span><o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:35.4pt"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-left:35.4pt">No worries, hope to have a civilized discussion.<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:35.4pt"> <o:p></o:p></p>
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<span lang="EN-GB">Just one clarification, my comment regarding the advisory from 2018 was not meant as advertisement etc..</span><o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:35.4pt"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-left:35.4pt">Point taken, I dramatized of course to underline my point. <o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:35.4pt"><o:p> </o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:35.4pt">
One suggestion to objectify the whole discussion, there exists a well-known and accepted metric for vulnerabilities: CVSS [1]<o:p></o:p></p>
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<span lang="EN-GB">If I calculate the CVSS score for this issue, it results in a medium level with score 5.8. But this is of course again (at least somewhat) influenced from my point of view to this bug.</span><o:p></o:p></p>
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<span lang="EN-GB"> </span><o:p></o:p></p>
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<span lang="EN-GB">Some projects have a policy to only do a security announcement for vulnerabilities with score high and critical. For Kamailio this is not yet defined in a detailed way, due to the size of the project and other factors.</span><o:p></o:p></p>
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<span lang="EN-GB"> </span><o:p></o:p></p>
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<span lang="EN-GB">So, If people in this discussion (or other people on the list) are interested in improving the project security processes – this wiki page with the current process might be a good starting point:
<a href="https://www.kamailio.org/wiki/security/policy" target="_blank">https://www.kamailio.org/wiki/security/policy</a></span><o:p></o:p></p>
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<span lang="EN-GB"> </span><o:p></o:p></p>
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<span lang="EN-GB">Please suggest your improvements to the existing process (preferable in a new discussion thread) on the sr-dev list. If you want to do it in private, feel free contact the management list.</span><o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:35.4pt">Well, first suggestion after having read it: to start actually following what's documented before any improvements are made. ;-) The policy says plain and simple (quote):<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:35.4pt"><o:p> </o:p></p>
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<h4 style="mso-margin-top-alt:0cm;margin-right:0cm;margin-bottom:12.0pt;margin-left:35.4pt" id="gmail-publishing_security_vulnerabilities">
<span style="font-size:10.5pt;font-family:"Arial",sans-serif;color:#333333">Publishing security vulnerabilities<o:p></o:p></span></h4>
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<p class="MsoNormal" style="margin-left:35.4pt"><span style="font-size:10.5pt;font-family:"Arial",sans-serif;color:#333333">Kamailio will publish security vulnerabilities, including an CVE ID, on the kamailio-business mailing list, sr-dev, sr-users as well
as related lists. </span><span style="font-size:10.5pt;font-family:"Arial",sans-serif;color:red">The advisories will also be published on the
<a href="http://kamailio.org">kamailio.org</a> web site</span><span style="font-size:10.5pt;font-family:"Arial",sans-serif;color:#333333">.</span> <o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:35.4pt"><span style="font-size:10.5pt;font-family:"Arial",sans-serif;color:#333333">CVE entries should be created for vulnerabilities in the core and major modules, for rarely used modules this is not necessary. If there
are several security issues together in one release, they should be announced together.</span> <o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:35.4pt"> <o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:35.4pt">I might be missing something obvious, but there is no "if" or "maybe" or "it depends". Any module that has been 18 years with the project qualifies to be a "major module" to me... <o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:35.4pt"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-left:35.4pt">-Max<o:p></o:p></p>
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