{"id":5923,"date":"2023-04-07T17:28:56","date_gmt":"2023-04-07T08:43:56","guid":{"rendered":"https:\/\/www.inforsec.org\/wp\/?p=5923"},"modified":"2023-04-07T17:29:23","modified_gmt":"2023-04-07T08:44:23","slug":"%e3%80%90usenix-security-2022%e8%ae%ba%e6%96%87%e5%88%86%e4%ba%ab%e3%80%91statefuzz-%e7%8a%b6%e6%80%81%e6%95%8f%e6%84%9f%e7%9a%84linux%e5%86%85%e6%a0%b8%e9%a9%b1%e5%8a%a8%e6%a8%a1%e7%b3%8a%e6%b5%8b","status":"publish","type":"post","link":"http:\/\/202.112.238.40\/wp\/?p=5923","title":{"rendered":"\u3010Usenix Security 2022\u8bba\u6587\u5206\u4eab\u3011StateFuzz: \u72b6\u6001\u654f\u611f\u7684Linux\u5185\u6838\u9a71\u52a8\u6a21\u7cca\u6d4b\u8bd5"},"content":{"rendered":"\n

\u524d\u8a00<\/strong><\/p>\n\n\n\n

\u672c\u6587\u6839\u636e\u82f1\u6587\u539f\u6587\u201cStateFuzz: System Call-Based State-Aware Linux Driver Fuzzing.\u201d\u6574\u7406\u64b0\u5199\u3002\u539f\u6587\u53d1\u8868\u5728Usenix Security 2022. \u4f5c\u8005\u5728\u5b8c\u6210\u82f1\u6587\u539f\u6587\u5de5\u4f5c\u65f6\uff0c\u4e3a\u6e05\u534e\u5927\u5b66NISL\u5b9e\u9a8c\u5ba4\u5728\u8bfb\u535a\u58eb\u751f\u3002\u672c\u6587\u8f83\u539f\u6587\u6709\u6240\u5220\u51cf\uff0c\u8be6\u7ec6\u5185\u5bb9\u53ef\u53c2\u8003\u539f\u6587\u3002<\/p>\n\n\n\n

01\u4ecb\u7ecd<\/strong><\/p>\n\n\n\n

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\u901a\u5e38\uff0c\u5728\u5f00\u53d1\u72b6\u6001\u654f\u611f\u6a21\u7cca\u6d4b\u8bd5\u89e3\u51b3\u65b9\u6848\u65f6\u9700\u8981\u56de\u7b54\u4e09\u4e2a\u95ee\u9898\u3002 <\/p>\n\n\n\n

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\u7b2c\u4e09\uff0c\u5982\u4f55\u5229\u7528\u7a0b\u5e8f\u72b6\u6001\u6765\u6307\u5bfcfuzzing\uff1fIJON \u7528\u624b\u52a8\u6ce8\u91ca\u7684\u72b6\u6001\u8986\u76d6\u66ff\u6362\u4e86 AFL \u4f7f\u7528\u7684\u4ee3\u7801\u8986\u76d6\u4f4d\u56fe\u3002\u9664\u4e86\u4ee3\u7801\u8986\u76d6\u7387\u4e4b\u5916\uff0cAFLNet \u8fd8\u8ddf\u8e2a\u72b6\u6001\uff08\u54cd\u5e94\u4ee3\u7801\uff09\u8f6c\u6362\u3002\u4ed6\u4eec\u4f7f\u7528\u4e00\u4e2a\u79cd\u5b50\u8bed\u6599\u5e93\u6765\u5b58\u50a8\u53d1\u73b0\u65b0\u4ee3\u7801\u6216\u65b0\u72b6\u6001\u7684\u6d4b\u8bd5\u7528\u4f8b\uff0c\u5e76\u503e\u5411\u4e8e\u589e\u52a0\u4ee3\u7801\u8986\u76d6\u7387\u7684\u6d4b\u8bd5\u7528\u4f8b\u3002\u503c\u5f97\u63a2\u7d22\u65b0\u7684\u53cd\u9988\u673a\u5236\u4ee5\u66f4\u597d\u5730\u5229\u7528\u7a0b\u5e8f\u72b6\u6001\u3002 <\/p>\n\n\n\n

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\u57fa\u4e8e\u6a21\u7cca\u6d4b\u8bd5\u5de5\u5177 Syzkaller\uff0c\u6211\u4eec\u5df2\u7ecf\u9488\u5bf9Linux \u9a71\u52a8\u7a0b\u5e8f\u6a21\u7cca\u6d4b\u8bd5\u5b9e\u73b0\u4e86StateFuzz \u7684\u539f\u578b\u3002\u6211\u4eec\u5728 Android Pixel-4 \u624b\u673a\u4f7f\u7528\u7684 MSM-4.14 \u5185\u6838\u548c Linux \u4e0a\u6e38\u5185\u6838 v4.19 \u7684\u9a71\u52a8\u7a0b\u5e8f\u4e0a\u8bc4\u4f30StateFuzz\u3002\u8bc4\u4f30\u7ed3\u679c\u8868\u660eStateFuzz\u5728\u53d1\u73b0\u65b0\u6f0f\u6d1e\u548c\u65b0\u4ee3\u7801\u65b9\u9762\u662f\u6709\u6548\u7684\u3002StateFuzz \u603b\u5171\u53d1\u73b0\u4e862\u4e2a\u5df2\u77e5\u4f46\u672a\u4fee\u8865\u7684\u6f0f\u6d1e\u548c18\u4e2a\u65b0\u6f0f\u6d1e\uff0c\u5176\u4e2d15\u4e2a\u5df2\u5206\u914d CVE ID \u6216\u6f0f\u6d1e\u8d4f\u91d1\u5956\u52b1\u3002\u4e0e\u5f53\u524d\u6700\u5148\u8fdb\u7684\u65b9\u6848Syzkaller\u76f8\u6bd4\uff0cStateFuzz \u53ef\u4ee5\u627e\u5230\u66f4\u591a\u7684\u6f0f\u6d1e\u5e76\u63d0\u5347\u4e8619%\u7684\u4ee3\u7801\u8986\u76d6\u7387\u3002<\/p>\n\n\n\n

02\u80cc\u666f<\/strong><\/p>\n\n\n\n

1.POSIX \u9a71\u52a8\u6a21\u7cca\u6d4b\u8bd5<\/strong><\/p>\n\n\n\n

\u8fd1\u5e74\u6765\uff0c\u5df2\u7ecf\u63d0\u51fa\u4e86\u8bb8\u591a\u7528\u4e8e\u53d1\u73b0\u6f0f\u6d1e\u7684\u6a21\u7cca\u6d4b\u8bd5\u89e3\u51b3\u65b9\u6848\uff0c\u4f8b\u5982\u7528\u4e8e Mac OS \u5185\u6838\u7684IMF\uff0c\u7528\u4e8e Windows \u5185\u6838\u7684 iofuzz\uff0cioctlfuzzer\uff0cioctlbf\u548c ioattack . Syzkaller\u4f7f\u7528\u57fa\u4e8e\u8bed\u6cd5\u7684\u6a21\u677f\u751f\u6210\u6d4b\u8bd5\u7528\u4f8b\uff0c\u901a\u8fc7\u7cfb\u7edf\u8c03\u7528\u63a5\u53e3\u4e0e\u5185\u6838\u4ea4\u4e92\uff0c\u5e76\u5229\u7528 KCOV\u548c KASAN\u5206\u522b\u8ddf\u8e2a\u4ee3\u7801\u8986\u76d6\u7387\u548c\u68c0\u6d4b\u5185\u5b58\u9519\u8bef\u3002\u5728 Linux \u5185\u6838\u4e2d\u4e00\u5207\u90fd\u662f\u6587\u4ef6\uff0c\u786c\u4ef6\u8bbe\u5907\u4e5f\u662f\u5982\u6b64\u3002POSIX \u6807\u51c6\u4e3a\u7528\u6237\u7a7a\u95f4\u5e94\u7528\u7a0b\u5e8f\u63d0\u4f9b\u4e86\u786c\u4ef6\u7684\u7edf\u4e00\u62bd\u8c61\u3002\/dev \u76ee\u5f55\u4e2d\u7684\u6bcf\u4e2a\u6587\u4ef6\u90fd\u4ee3\u8868 Linux \u4e2d\u7684\u4e00\u4e2a\u786c\u4ef6\u8bbe\u5907\uff0c\u5b83\u53ef\u4ee5\u50cf\u666e\u901a\u6587\u4ef6\u4e00\u6837\u88ab\u7528\u6237\u7a7a\u95f4\u7a0b\u5e8f\u4f7f\u7528\u3002\u4f8b\u5982\uff0c\u7528\u6237\u7a7a\u95f4\u5e94\u7528\u7a0b\u5e8f\u9700\u8981\u83b7\u53d6\u8bbe\u5907\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26\uff0c\u7136\u540e\u901a\u8fc7\u8bfb\u5199\u7cfb\u7edf\u8c03\u7528\u4e0e\u5176\u4ea4\u4e92\u3002\u6b64\u5916\uff0c\u8fd8\u4e3a\u7528\u6237\u7a7a\u95f4\u5e94\u7528\u7a0b\u5e8f\u63d0\u4f9b\u4e86\u539f\u578b\u4e3a int ioctl(int fd, unsigned long request, …) \u7684\u7279\u6b8a\u7cfb\u7edf\u8c03\u7528\uff0c\u4ee5\u6839\u636e\u8bf7\u6c42\u652f\u6301\u81ea\u5b9a\u4e49\u786c\u4ef6\u884c\u4e3a\u3002\u901a\u5e38\uff0cLinux \u9a71\u52a8\u7a0b\u5e8f\u6709\u4e24\u4e2a\u653b\u51fb\u9762\uff0c\u4e00\u4e2a\u5728\u4e8e\u786c\u4ef6\u8bbe\u5907\uff0c\u53e6\u4e00\u4e2a\u5728\u4e8e\u7cfb\u7edf\u8c03\u7528\u3002\u56e0\u6b64\uff0c\u5bf9 Linux \u9a71\u52a8\u7a0b\u5e8f\u8fdb\u884c\u6a21\u7cca\u6d4b\u8bd5\u6709\u4e24\u4e2a\u65b9\u9762\u3002\u7b2c\u4e00\u4e2a\u7ef4\u5ea6\u662f\u6a21\u7cca\u9a71\u52a8\u7a0b\u5e8f\uff0c\u901a\u8fc7\u914d\u7f6e\u6216 I\/O \u901a\u9053\uff08\u5982\u7aef\u53e3 I\/O\u3001MMIO \u548c DMA\uff09\u4ece\u786c\u4ef6\u8bbe\u5907\u7aef\u6ce8\u5165\u8f93\u5165\u3002\u4f8b\u5982\uff0c\u4e3a\u4e86\u6a21\u7cca\u6d4b\u8bd5 USB \u9a71\u52a8\u7a0b\u5e8f\u7684probe\u8fc7\u7a0b\uff0cUSBFuzz \u5229\u7528\u901a\u7528 USB \u8bbe\u5907\u4e0e\u9a71\u52a8\u7a0b\u5e8f\u5339\u914d\uff0c\u5e76\u5411\u5b83\u4eec\u53d1\u9001\u6076\u610f USB \u63cf\u8ff0\u7b26\u3002PeriScope\u901a\u8fc7\u6302\u94a9page fault handler\u5c06\u6a21\u7cca\u6d4b\u8bd5\u6570\u636e\u6ce8\u5165\u9a71\u52a8\u7a0b\u5e8f\u7684 MMIO\u3002\u7b2c\u4e8c\u4e2a\u7ef4\u5ea6\u6765\u81ea\u7cfb\u7edf\u8c03\u7528\uff0c\u7531\u4e8e\u7cfb\u7edf\u8c03\u7528\u7684\u53c2\u6570\u662f\u591a\u79cd\u591a\u6837\u7684\uff0c\u56e0\u6b64\u9700\u8981\u751f\u6210\u6709\u6548\u7684\u6d4b\u8bd5\u7528\u4f8b\u3002\u4f8b\u5982\uff0c\u4e00\u4e2a\u6709\u6548\u7684 ioctl() \u7cfb\u7edf\u8c03\u7528\u901a\u5e38\u91c7\u7528\u4e00\u4e2a\u590d\u6742\u7684\u7ed3\u6784\u548c\u4e00\u4e2a\u547d\u4ee4\uff08\u901a\u5e38\u662f\u4e00\u4e2a\u5927\u6574\u6570\uff09\u4f5c\u4e3a\u53c2\u6570\u3002Syzkaller \u4f9d\u9760\u4eba\u5de5\u6765\u63d0\u53d6\u7cfb\u7edf\u8c03\u7528\u63a5\u53e3\uff0c\u4ee5\u89e6\u53d1\u9a71\u52a8\u7a0b\u5e8f\u7684\u64cd\u4f5c\u3002DIFUZE\u5e94\u7528\u9759\u6001\u5206\u6790\u4ece\u8bbe\u5907\u9a71\u52a8\u7a0b\u5e8f\u7684\u81ea\u5b9a\u4e49\u63a5\u53e3\u4e2d\u63d0\u53d6\u652f\u6301\u7684\u8bf7\u6c42\u7c7b\u578b\u548c\u76f8\u5173\u53c2\u6570\uff0c\u8fd9\u6709\u52a9\u4e8e\u6a21\u7cca\u6d4b\u8bd5\u5668\u751f\u6210\u6709\u6548\u7684\u6d4b\u8bd5\u7528\u4f8b\u3002<\/p>\n\n\n\n

2.\u4ee3\u7801\u8986\u76d6\u7387\u5f15\u5bfc\u7684\u6a21\u7cca\u6d4b\u8bd5\u7684\u5c40\u9650\u6027<\/strong><\/p>\n\n\n\n

\u4ee3\u7801\u8986\u76d6\u7387\u5f15\u5bfc\u7684\u6a21\u7cca\u6d4b\u8bd5\u5728\u6d4b\u8bd5\u5177\u5907\u590d\u6742\u72b6\u6001\u7684\u7a0b\u5e8f\uff08\u6bd4\u5982\u7f51\u7edc\u534f\u8bae\u7a0b\u5e8f\u3001\u5185\u6838\u9a71\u52a8\uff09\u65f6\u5b58\u5728\u5c40\u9650\uff0c\u5373fuzzer\u7f3a\u4e4f\u6307\u5bfc\u6765\u904d\u5386\u7a0b\u5e8f\u72b6\u6001\u3002\u539f\u56e0\u5728\u4e8e\u4ee3\u7801\u8986\u76d6\u7387\u5f15\u5bfc\u7684\u6a21\u7cca\u6d4b\u8bd5\u53ea\u5173\u5fc3\u4ee3\u7801\u8986\u76d6\u7387\uff0c\u56e0\u6b64\u4f1a\u4e22\u5f03\u6ca1\u6709\u89e6\u53d1\u65b0\u4ee3\u7801\u7684\u6d4b\u8bd5\u7528\u4f8b\uff0c\u5373\u4f7f\u8fd9\u4e9b\u6d4b\u8bd5\u7528\u4f8b\u89e6\u53d1\u4e86\u65b0\u7684\u72b6\u6001\u3002\u4ee5IJON[2]\u8bba\u6587\u63d0\u51fa\u7684\u8ff7\u5bab\u7a0b\u5e8f\u4e3a\u4f8b\uff0c\u5728\u56fe1\u7684\u4ee3\u7801\u4e2d\uff0c\u4ee3\u7801\u8986\u76d6\u7387\u5f15\u5bfc\u7684\u6a21\u7cca\u6d4b\u8bd5\u53ef\u4ee5\u8f7b\u677e\u5730\u8986\u76d6\u6240\u6709\u4ee3\u7801\u884c\uff0c\u5728\u6b64\u4e4b\u540e\uff0c\u5373\u4f7fx\u548cy\u6709\u4e0d\u540c\u53d6\u503c\uff0c\u4e5f\u4f1a\u88ab\u6a21\u7cca\u6d4b\u8bd5\u5668\u4e22\u5f03\uff0c\u56e0\u4e3a\u6ca1\u6709\u89e6\u53d1\u65b0\u7684\u4ee3\u7801\u884c\u3002\u8fd9\u6837\u4e00\u6765\uff0c\u56e0\u4e3a\u7f3a\u4e4f\u6307\u5bfc\uff0c\u6a21\u7cca\u6d4b\u8bd5\u5f88\u96be\u901a\u8fc7\u968f\u673a\u751f\u6210x\u548cy\uff0c\u6765\u904d\u5386\u6240\u6709\u7684x\u3001y\u53d6\u503c\u7ec4\u5408\u6765\u89e6\u53d1Bug()\u51fd\u6570\u3002<\/p>\n\n\n\n

\u56e0\u6b64\uff0c\u5bf9\u8fd9\u4e9b\u7a0b\u5e8f\uff0c\u9700\u8981\u4f7f\u7528\u72b6\u6001\u654f\u611f\u7684\u6a21\u7cca\u6d4b\u8bd5\uff08state-aware fuzzing\uff09\u3002<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

\u56fe1. \u8ff7\u5bab\u793a\u4f8b\u4ee3\u7801<\/strong><\/p>\n\n\n\n

3. \u7a0b\u5e8f\u72b6\u6001<\/strong><\/p>\n\n\n\n

\u4ece\u672c\u8d28\u4e0a\u8bb2\uff0c\u7a0b\u5e8f\u72b6\u6001\u662f\u7a0b\u5e8f\u7684\u6267\u884c\u4e0a\u4e0b\u6587\uff0c\u5305\u62ec\u7a0b\u5e8f\u5f53\u524d\u64cd\u4f5c\u7684\u6240\u6709\u5185\u5bb9\uff0c\u5373\u6240\u6709\u7a0b\u5e8f\u53d8\u91cf\u7684\u503c\uff08\u4ece\u8f6f\u4ef6\u7684\u89d2\u5ea6\u6765\u770b\uff09\u548c\u6240\u6709\u865a\u62df\u5185\u5b58\u548c\u5bc4\u5b58\u5668\u7684\u503c\uff08\u4ece\u8f6f\u4ef6\u7684\u89d2\u5ea6\u6765\u770b\uff09\u3002\u786c\u4ef6\uff09\u3002\u63a2\u7d22\u6240\u6709\u6f5c\u5728\u7684\u7a0b\u5e8f\u72b6\u6001\u5c06\u63ed\u793a\u6240\u6709\u6f5c\u5728\u7684\u6f0f\u6d1e\u3002\u7136\u800c\uff0c\u7531\u4e8e\u8ba1\u7b97\u8d44\u6e90\u7684\u9650\u5236\uff0c\u5728\u6a21\u7cca\u6d4b\u8bd5\u671f\u95f4\u8ddf\u8e2a\u6b64\u7c7b\u7a0b\u5e8f\u72b6\u6001\u662f\u4e0d\u53ef\u884c\u7684\u3002\u7a0b\u5e8f\u72b6\u6001\u662f\u7531\u7a0b\u5e8f\u7ef4\u62a4\u7684\u7279\u5b9a\u6267\u884c\u4e0a\u4e0b\u6587\uff0c\u4ee5\u8bb0\u4f4f\u5148\u524d\u7684\u4e8b\u4ef6\u6216\u7528\u6237\u4ea4\u4e92\u3002\u6211\u4eec\u5bf9\u72b6\u6001\u4e30\u5bcc\u7684\u7a0b\u5e8f\u8fdb\u884c\u4e86\u7814\u7a76\uff0c\u4ee5\u4e86\u89e3\u5b83\u4eec\u5982\u4f55\u8868\u793a\u7a0b\u5e8f\u72b6\u6001\u3002\u5177\u4f53\u6765\u8bf4\uff0c\u6211\u4eec\u4ece\u5f00\u6e90\u9879\u76ee\u4e2d\u6536\u96c6\u4e86\u5305\u542b\u5173\u952e\u5b57\u201cstate machine\u201d\u768450 \u4e2a\u4ee3\u7801\u63d0\u4ea4\uff0c\u8fd9\u8868\u660e\u7a0b\u5e8f\u6b63\u5728\u5904\u7406\u67d0\u4e9b\u72b6\u6001\u3002\u8fd950\u6b21\u63d0\u4ea4\u5305\u62ec (1) \u5177\u6709\u5173\u952e\u5b57\u7684 patchwork \u4e2d\u7684\u6240\u6709 14 \u4e2a Linux \u5185\u6838\u63d0\u4ea4\uff0c(2) MSM \u5185\u6838\u4e2d\u4ece 2019 \u5e74 3 \u6708\u5230 2020 \u5e74 9 \u6708\u7684 21 \u6b21\u63d0\u4ea4\uff0c\u4ee5\u53ca (3) Github\u4e2d\u6765\u81ea\u6d41\u884c\u7f51\u7edc\u534f\u8bae\u9879\u76ee\u7684 15 \u6b21\u63d0\u4ea4\uff0c\u8fd9\u4e9b\u9879\u76ee\u5305\u62ec\u4e86nfs-ganesha\u3001curl\u3001httpd\u3001OpenSMTPD\u3001OpenSSL \u548c OpenSMTPD\u3002\u7136\u540e\uff0c\u6211\u4eec\u624b\u52a8\u5206\u6790\u4e86\u8fd9\u4e9b\u4ee3\u7801\u63d0\u4ea4\u662f\u5982\u4f55\u6807\u8bb0\u7a0b\u5e8f\u72b6\u6001\u7684\u3002\u7ed3\u679c\u8868\u660e\uff0c\u5728 50 \u4e2a\u63d0\u4ea4\u4e2d\u7684 48 \u4e2a\u4e2d\uff0c\u72b6\u6001\u7531\u5e03\u5c14\/\u6574\u6570\u6216\u679a\u4e3e\u7c7b\u578b\u7684\u53d8\u91cf\u8868\u793a\uff08\u56fe2\u5c55\u793a\u4e86\u51e0\u4e2a\u53d8\u91cf\u793a\u4f8b\uff09\u3002\u5bf9\u4e8e\u53e6\u5916\u4e24\u4e2a\u63d0\u4ea4\uff0c\u4e00\u4e2a\u4f7f\u7528\u51fd\u6570\u6307\u9488\u6765\u8868\u793a\u72b6\u6001\uff0c\u53e6\u4e00\u4e2a\u4f7f\u7528\u6570\u636e\u5305\u4e2d\u7684\u72b6\u6001\u4ee3\u7801\u6765\u8868\u793a\u72b6\u6001\u3002<\/p>\n\n\n\n

\u56e0\u6b64\uff0c\u7a0b\u5e8f\u5c06\u6709\u4ef7\u503c\u7684\u7a0b\u5e8f\u72b6\u6001\u5b58\u50a8\u5230\u53d8\u91cf\u4e2d\u662f\u5f88\u5e38\u89c1\u7684\uff0c\u6211\u4eec\u53ef\u4ee5\u5229\u7528\u4fdd\u5b58\u5173\u952e\u4fe1\u606f\u7684\u53d8\u91cf\u6765\u8868\u793a\u7a0b\u5e8f\u72b6\u6001\u3002<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

\u56fe2. \u53d8\u91cf\u8868\u793a\u72b6\u6001\u7684\u5b9e\u4f8b<\/strong><\/p>\n\n\n\n

 \uff08\u672c\u6587\u53ea\u9009\u53d6\u539f\u6587\u4e2d\u90e8\u5206\u7ae0\u8282\uff0c\u66f4\u591a\u7cbe\u5f69\u5185\u5bb9\u656c\u8bf7\u671f\u5f85\u540e\u7eed\u51fa\u7248\u7684\u300a\u7f51\u7edc\u5b89\u5168\u7814\u7a76\u8fdb\u5c55\u300b\uff09<\/em><\/p>\n\n\n\n

\u4f5c\u8005\u7b80\u4ecb<\/strong><\/p>\n\n\n\n

\u8d75\u535a\u680b\uff0c\u6e05\u534e\u5927\u5b66\u7f51\u7814\u9662\u7f51\u7edc\u5b89\u5168\u5b9e\u9a8c\u5ba42017\u5c4a\u76f4\u535a\u751f\uff0c\u84dd\u83b2\u82b1\u3001Tea-Deliverers\u6218\u961f\u961f\u5458\uff0c\u5bfc\u5e08\u4e3a\u5f20\u8d85\u8001\u5e08\u3002\u4e3b\u8981\u7814\u7a76\u5174\u8da3\u5305\u62ecLinux\u5185\u6838\u6f0f\u6d1e\u6316\u6398\u3001\u6a21\u7cca\u6d4b\u8bd5\u548c\u7a0b\u5e8f\u5206\u6790\uff0c\u5728Usenix Security\u3001ISSTA\u7b49\u56fd\u9645\u5b66\u672f\u4f1a\u8bae\u4e0a\u53d1\u8868\u591a\u7bc7\u8bba\u6587\uff0c\u66fe\u5728DEFCON\u3001GEEKPWN\u3001\u5f3a\u7f51\u676f\u7b49\u56fd\u5185\u5916\u77e5\u540d\u7ade\u8d5b\u4e2d\u83b7\u5956\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

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