<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=us-ascii">
<meta name="Generator" content="Microsoft Word 15 (filtered medium)">
<style><!--
/* Font Definitions */
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:Aptos;}
@font-face
{font-family:Consolas;
panose-1:2 11 6 9 2 2 4 3 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
font-size:12.0pt;
font-family:"Aptos",sans-serif;}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
pre
{mso-style-priority:99;
mso-style-link:"HTML Preformatted Char";
margin:0in;
margin-bottom:.0001pt;
font-size:10.0pt;
font-family:"Courier New";}
span.HTMLPreformattedChar
{mso-style-name:"HTML Preformatted Char";
mso-style-priority:99;
mso-style-link:"HTML Preformatted";
font-family:"Consolas",serif;}
span.EmailStyle20
{mso-style-type:personal-reply;
font-family:"Aptos",sans-serif;
color:windowtext;}
.MsoChpDefault
{mso-style-type:export-only;
font-size:10.0pt;
mso-ligatures:none;}
@page WordSection1
{size:8.5in 11.0in;
margin:1.0in 1.0in 1.0in 1.0in;}
div.WordSection1
{page:WordSection1;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]-->
</head>
<body lang="EN-US" link="blue" vlink="purple" style="word-wrap:break-word">
<div class="WordSection1">
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif">Hi Andrew, <o:p>
</o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif">More as an FYI. Microsoft is no longer publishing errata’s and have moved to full document publishing for servicing and security updates.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif">I contacted the team responsible for the Open Specifications publishing and they did publish security updates today for MS-NRPC and MS-APDS.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif">You can find more information and links to the documents on the “Service Releases”:
</span><a href="https://learn.microsoft.com/en-us/openspecs/windows_protocols/ms-winprotlp/e168a474-7de2-421c-b460-91adf87692a3">[MS-WINPROTLP]: What’s New and Changed | Microsoft Learn</a>.<span style="font-family:"Calibri",sans-serif"><o:p></o:p></span></p>
<div>
<div style="border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> Andrew Bartlett <abartlet@samba.org>
<br>
<b>Sent:</b> Monday, April 8, 2024 4:27 PM<br>
<b>To:</b> Interoperability Documentation Help <dochelp@microsoft.com><br>
<b>Cc:</b> cifs-protocol mailing list <cifs-protocol@lists.samba.org><br>
<b>Subject:</b> [EXTERNAL] Looking for missing documentation (MS-KILE?) for CVE-2024-21427, CVE-2024-20674 and PAC signature changes<o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<div>
<p class="MsoNormal">Kia Ora Dochelp,<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">Recently we have seen CVE-2024-21427 and CVE-2024-20674 issued.<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">The first <span style="font-size:11.0pt">CVE-2024-21427</span>, we know what the details are from our report, but we don't have details of the protocol change from the MS side, so would like the full details in case there were protocol
changes we didn't anticipate. <o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">We don't have any details of the protocol changes for <span style="font-size:11.0pt">CVE-2024-20674, and as it is marked Critical we would like to ensure we don't have a similar issue or can follow any protocol changes made for interoperability. </span><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:11.0pt">Finally, we have noticed in November (or earlier) that the Server signature in the Kerberos PAC is no longer RC4_HMAC, even with RC4 tickets. This makes a lot of sense, but I don't see any documentation and
I would like to update our implementation to match.</span><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">We would greatly appreciate any information that is available on these recent Kerberos protocol changes. <o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:11.0pt">Thanks,</span><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:11.0pt">Andrew Bartlett</span><o:p></o:p></p>
</div>
<div>
<pre>-- <o:p></o:p></pre>
<div>
<p class="MsoNormal">Andrew Bartlett (he/him) <a href="https://samba.org/~abartlet/">https://samba.org/~abartlet/</a><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal">Samba Team Member (since 2001) <a href="https://samba.org/">
https://samba.org</a><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal">Samba Team Lead <a href="https://catalyst.net.nz/services/samba">https://catalyst.net.nz/services/samba</a><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:13.0pt">Catalyst.Net Ltd</span><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">Proudly developing Samba for Catalyst.Net Ltd - a Catalyst IT group company<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">Samba Development and Support: <a href="https://catalyst.net.nz/services/samba">
https://catalyst.net.nz/services/samba</a><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">Catalyst IT - Expert Open Source Solutions<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
</div>
</div>
</body>
</html>