2020-07-25 12:33:15 +03:00
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2020-07-30 14:34:56 +03:00
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<title>AMD — Spyware Watchdog</title>
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2020-07-25 12:33:15 +03:00
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<link rel="stylesheet" href="../style.css" />
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2020-02-07 09:12:15 +02:00
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</head>
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2020-02-08 10:09:18 +02:00
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2020-07-25 12:33:15 +03:00
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<body>
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<div class="case">
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<div class="nav"><a href="index.html">← Catalog</a></div>
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<div class="main">
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<h1>
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2020-07-30 14:34:56 +03:00
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<span class="red">UNFINISHED ARTICLE — UNDER CONSTRUCTION — BAD FORMATTING</span>
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2020-07-25 12:33:15 +03:00
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</h1>
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2020-07-30 14:34:56 +03:00
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<img src="../images/amd_logo.png" alt="AMD logo" />
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2020-07-25 12:33:15 +03:00
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<h1>AMD CPU Family</h1>
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<p>
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This part of the article should have the name of the program and what
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it does, and who develops it.
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</p>
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<p>
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Advanced Micro Devices, Inc. is an American multinational
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semiconductor company based in Santa Clara, California, that develops
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computer processors and related technologies for business and consumer
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markets. This article is specifically about the CPUs that are
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produced by AMD and nothing else. The logo is one of many logos used
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by AMD, but the article is not about any one specific CPU.
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<b>No rating is given</b> because this is not an article about any
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specific product, and the rating system is difficult to fit into this
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article.
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</p>
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<p>
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Modern CPU models produced by AMD contain an embedded ARM co-processor
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called the Platform Security Processor (PSP). Nearly all AMD CPUs
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produced since 2013 operate under the supervision of this separate,
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more privileged, environment consisting of an integrated ARM processor
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with access to isolated resources as well as main system memory and
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I/O.
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<sup><a href="#s1">[1]</a></sup>
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</p>
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<p>
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This article isn't complete. This is a work-in-progress and so this
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article is not formatted properly...
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</p>
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<p>
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http://www.uefi.org/sites/default/files/resources/UEFI_PlugFest_AMD_Security_and_Server_innovation_AMD_March_2013.pdf
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(page 11)
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</p>
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<p>
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While ARM and AMD tout the “Trusted Execution Environment” as useful
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for secure payment, anti-theft and malware protection, they also
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discuss content protection or DRM as a use case.
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https://www.owasp.o../images/c/c8/OWASP_Security_Tapas_-_TrustZone%2C_TEE_and_Mobile_Security_final.pdf
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</p>
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<p>Possible uses … DRM</p>
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<p>
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Researchers have already been able to identify exploits in AMD’s
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Platform Security Processor. In 2018 researchers published a
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vulnerability in which a specially crafted certificate could lead to a
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stack overflow in the PSP’s TPM firmware allowing for remote code
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execution. (https://seclists.org/fulldisclosure/2018/Jan/12) Another
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group goes on to detail how an attacker might leverage exploits
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RYZENFALL or FALLOUT to gain foothold in networks with Ryzen based
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systems.
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(https://www.techpowerup.com/242386/cts-labs-responds-to-a-techpowerup-technical-questionnaire)
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</p>
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<hr/>
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<p>
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Please note that Family 16h and Family 15h-Models60h and later contain
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a PSP
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</p>
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<h2><font color="red">NOT TRUSTED:</font></h2>
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<ul>
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<li>
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Kaveri (Steamroller “BDv3”)
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https://www.amd.com/system/files/TechDocs/51590_15h_Models_30h-3Fh_A-Series_PDS.pdf
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(page 6)
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https://arstechnica.com/information-technology/2012/06/amd-to-add-arm-processors-to-boost-chip-security/
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</li>
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<li>
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Carrizo/Bristol Ridge (Excavator “BDv4”)
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https://www.anandtech.com/show/8995/amd-at-isscc-2015-carrizo-and-excavator-details
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</li>
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<li>All Zen based CPUs (17h family)</li>
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</ul>
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<h2><font color="yellow">POTENTIALLY TRUSTED:</font></h2>
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<ul>
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<li>
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Jaguar (the only 16h family CPU that does NOT have PSP):
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http://support.amd.com/TechDocs/52128_16h_Software_Opt_Guide.zip
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(page 8)
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https://en.wikipedia.org/wiki/Puma_(microarchitecture)#Improvements_over_Jaguar
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</li>
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<li>
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All K5-K10, Bobcat, Bulldozer (“BDv1”) and Piledriver (“BDv2”)
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</li>
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<li>
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All K5-K10, Bobcat, Bulldozer (“BDv1”) and Piledriver (“BDv2”)
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</li>
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</ul>
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</div>
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<hr />
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<div class="footer">
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<div class="sources">
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<h4>Sources:</h4>
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<ol>
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<li id="s1">
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<a
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href="http://www.uefi.org/sites/default/files/resources/UEFI_PlugFest_AMD_Security_and_Server_innovation_AMD_March_2013.pdf"
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>AMD Security and Server innovation</a
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>
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<a
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href="http://web.archive.org/web/20180422100442/http://www.uefi.org/sites/default/files/resources/UEFI_PlugFest_AMD_Security_and_Server_innovation_AMD_March_2013.pdf"
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>[web.archive.org]</a
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>
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<a href="http://archive.vn/7dYOZ">[archive.vn]</a><br />
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</li>
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</ol>
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</div>
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<hr />
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<b>This article was last edited on 1/10/2019</b>
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<!--Dont change-->
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<p>
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If you want to edit this article, or contribute your own article(s),
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contact us on XMPP over in spyware@conference.nuegia.net, or visit us
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at the git repo on
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2020-10-15 05:07:55 +03:00
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<a href="https://codeberg.org/shadow/SpywareWatchdog">Codeberg</a>.
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2020-07-25 12:33:15 +03:00
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</p>
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<p>
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All contributions must be licensed under the CC0 license to be
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accepted.
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</p>
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<a href="https://creativecommons.org/publicdomain/zero/1.0/legalcode"
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><img class="icon" src="../images/cc0.png" alt="CC0 License"
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/></a>
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<!--Dont change-->
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</div>
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</div>
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2020-02-07 09:12:15 +02:00
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</body>
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</html>
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