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| Teaclave Meetup #8 |
| </h1> <div class="publish-date-author">October 14, 2021 · Mingshen Sun</div></header> <div itemprop="articleBody" class="content__default"><h2 id="agenda"><a href="#agenda" class="header-anchor">#</a> Agenda</h2> <ul><li>Recent update in Teaclave — Mingshen Sun</li> <li>Using and Customizing Teaclave SGX SDK — Shunfan Zhou</li></ul> <h2 id="notes"><a href="#notes" class="header-anchor">#</a> Notes</h2> <h3 id="recent-update-in-teaclave-mingshen"><a href="#recent-update-in-teaclave-mingshen" class="header-anchor">#</a> Recent Update in Teaclave — Mingshen</h3> <p><strong>Platform</strong></p> <ul><li>[docker] start Teaclave docker services with auto-detection mechanism (#559).</li> <li>Use <code>run-teaclave-service.sh</code> instead of using <code>docker-compose</code> directly.</li></ul> <p><strong>SGX SDK</strong></p> <ul><li>v1.1.4-testing: <a href="https://github.com/apache/incubator-teaclave-sgx-sdk/commits/v1.1.4-testing" rel="noopener noreferrer">https://github.com/apache/incubator-teaclave-sgx-sdk/commits/v1.1.4-testing</a> <ul><li>Rust <code>nightly-2021-09-13</code></li> <li>Support Intel SGX SDK 2.15 and DCAP 1.12</li></ul></li> <li>Project template refactoring</li> <li>README polishing</li></ul> <p><strong>TrustZone SDK</strong></p> <ul><li>Teaclave/OP-TEE: Integrating examples in Rust TrustZone SDK in OP-TEE |
| <ul><li>Multiple PRs to OP-TEE's <code>manifest</code>, <code>build</code> repos.</li> <li>Now in the <code>master</code> branch, should be available in the next release 3.15 in Oct 15.</li> <li>OP-TEE with Rust: <a href="https://optee.readthedocs.io/en/latest/building/optee_with_rust.html" rel="noopener noreferrer">https://optee.readthedocs.io/en/latest/building/optee_with_rust.html</a></li></ul></li></ul> <p><img src="/assets/img/optee-with-rust-doc.85a6fc68.png" alt="OP-TEE with Rust"></p> <p><strong>Website</strong></p> <ul><li>Add project/organization logos in the "Powered By" page: <a href="https://teaclave.apache.org/powered-by/" rel="noopener noreferrer">https://teaclave.apache.org/powered-by/</a></li></ul> <p><img src="/assets/img/project-powered-by-teaclave-logo.0f661da0.png" alt="Project Powered By Teaclave"></p> <ul><li>Redesign the "Contributors" page |
| <ul><li>add Apache ID, GitHub ID to mentors, PPMC, and committers</li> <li>Tags for committers to show areas that they are familiar with</li></ul></li> <li>Add API Docs (references) of TrustZone SDK both for host and TA sides |
| <ul><li>Host: <a href="https://teaclave.apache.org/api-docs/trustzone-sdk/optee-teec" rel="noopener noreferrer">https://teaclave.apache.org/api-docs/trustzone-sdk/optee-teec</a></li> <li>TA: <a href="https://teaclave.apache.org/api-docs/trustzone-sdk/optee-utee" rel="noopener noreferrer">https://teaclave.apache.org/api-docs/trustzone-sdk/optee-utee</a></li></ul></li></ul> <p><img src="/assets/img/teaclave-trustzone-sdk-links-in-homepage.e6350f8e.png" alt="Teaclave TrustZone SDK Links in Homepage"></p> <ul><li>Blog |
| <ul><li><a href="https://teaclave.apache.org/blog/2021-10-06-podling-teaclave-report-october-2021/" rel="noopener noreferrer">Podling Teaclave Report - October 2021</a> · Oct 05 2021</li> <li><a href="https://teaclave.apache.org/blog/2021-10-01-announcing-teaclave-0-3-0/" rel="noopener noreferrer">Announcing Apache Teaclave (incubating) 0.3.0</a> · Sep 30 2021</li></ul></li></ul> <p><strong>Community</strong></p> <ul><li>New committers: Yuan Zhuang and Rong Fan from Baidu</li> <li>Discord: Connect directly with Teaclave community members (join link: <a href="https://discord.gg/ynECXsxm5P" rel="noopener noreferrer">https://discord.gg/ynECXsxm5P</a>)</li></ul> <p><strong>Security</strong></p> <ul><li><em>SmashEx: Smashing SGX Enclaves Using Exceptions</em> (to appear at CCS 2021): |
| Jinhua Cui (National University of Defense Technology, National University of |
| Singapore); Zhijingcheng Yu (National University of Singapore); Shweta Shinde |
| (ETH Zurich); Prateek Saxena (National University of Singapore); Zhiping Cai |
| (National University of Defense Technology)</li> <li><a href="https://arxiv.org/ftp/arxiv/papers/2110/2110.06657.pdf" rel="noopener noreferrer">https://arxiv.org/ftp/arxiv/papers/2110/2110.06657.pdf</a></li> <li>CVE-2021-0186 |
| <ul><li><a href="https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00548.html" rel="noopener noreferrer">https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00548.html</a></li> <li><strong>Description</strong>: Improper input validation in the Intel(R) SGX SDK |
| applications compiled for SGX2 enabled processors may allow a privileged |
| user to potentially escalation of privilege via local access.</li> <li><strong>Affected Products</strong>: Intel SGX SDK for Windows v2.12 and earlier, Intel |
| SGX SDK for Linux v2.13 and earlier, Intel® Processors supporting SGX2.</li> <li>Intel recommends updating the Intel® SGX SDK to the versions listed below. |
| Enclaves built with the new Intel® SGX SDK version should increment the |
| value of their ISVSVN field.</li></ul></li> <li>Patch: <a href="https://github.com/intel/linux-sgx/commit/edfe42a517b3e4b1d81204c3cdef6da6cb35fefc" rel="noopener noreferrer">https://github.com/intel/linux-sgx/commit/edfe42a517b3e4b1d81204c3cdef6da6cb35fefc</a></li></ul> <p><img src="/assets/img/cve-2021-0186-patch.828dec8f.png" alt="Patch in Intel SGX SDK"></p> <h3 id="using-and-customizing-teaclave-sgx-sdk-shunfan-zhou"><a href="#using-and-customizing-teaclave-sgx-sdk-shunfan-zhou" class="header-anchor">#</a> Using and Customizing Teaclave SGX SDK — Shunfan Zhou</h3> <ul><li>Teaclave SGX SDK |
| <ul><li>pro: security</li> <li>con: testing is hard</li></ul></li> <li>Case study: rust-bitcoin |
| <ul><li>std</li> <li>Feature</li> <li>Port dependencies recursively</li></ul></li> <li>Some issues |
| <ul><li>efforts of porting</li> <li>security: 1) updates of upstream, 2) unit tests</li> <li>More TEE backend: AMD SEV, ARM CCA</li></ul></li> <li>libs is not completed in SGX for vanilla Rust standard library</li> <li>Phala libc-hacks |
| <ul><li>directly use Intel's libc</li> <li>use ocall warpper functions</li></ul></li> <li>Conflicts: multiple language items in Rust</li> <li>Runtime behavior checks</li> <li>HW mode issue: <code>rand::thread_rnd()</code> is using CPUID, which is not allowed in SGX</li> <li>Check instructions after compiling</li></ul> <h3 id="free-discussion"><a href="#free-discussion" class="header-anchor">#</a> Free Discussion</h3> <ul><li>About AMD SEV in Azure: <a href="https://azure.microsoft.com/en-us/blog/azure-and-amd-enable-lift-and-shift-confidential-computing/" rel="noopener noreferrer">https://azure.microsoft.com/en-us/blog/azure-and-amd-enable-lift-and-shift-confidential-computing/</a></li></ul> <h2 id="attendees"><a href="#attendees" class="header-anchor">#</a> Attendees</h2> <ul><li>Mingshen Sun</li> <li>Qinkun Bao</li> <li>He Sun</li> <li>George</li> <li>Hongbo Chen</li> <li>hang</li> <li>Kevin</li> <li>Ben</li> <li>Ruide</li> <li>Rudong Zhou</li> <li>shelven</li> <li>Tongxin Li</li> <li>Weijie Liu</li> <li>Zha0Chan</li> <li>Tianyi Li</li> <li>DuanRan</li> <li>Gordon</li> <li>david</li></ul> <h2 id="group-photo"><a href="#group-photo" class="header-anchor">#</a> Group Photo</h2> <p><img src="/assets/img/teaclave-meetup-8-zoom.9d6f6732.png" alt="Group Photo"></p></div></article></div> <div class="footer"> |
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