{"id":25,"date":"2015-03-01T00:05:29","date_gmt":"2015-02-28T16:05:29","guid":{"rendered":"http:\/\/blog.liangjinjin.cn\/?p=25"},"modified":"2015-04-03T23:02:53","modified_gmt":"2015-04-03T15:02:53","slug":"ssh-bash%e6%bc%8f%e6%b4%9e%e6%a3%80%e6%b5%8b%e5%8f%8a%e4%bf%ae%e5%a4%8d%e5%8a%9e%e6%b3%95","status":"publish","type":"post","link":"https:\/\/blog.liangjinjin.cn\/?p=25","title":{"rendered":"SSH bash\u6f0f\u6d1e\u68c0\u6d4b\u53ca\u4fee\u590d\u529e\u6cd5"},"content":{"rendered":"<div id=\"wpopt-ai-summary\"><\/div><p>Bash\u662f\u4e00\u6b3e\u5728\u5f88\u591aUnix\u7535\u8111\u4e2d\u7528\u4e8e\u63a7\u5236\u547d\u4ee4\u63d0\u793a\u7b26\u7684\u8f6f\u4ef6\uff0c\u9ed1\u5ba2\u53ef\u4ee5\u501f\u52a9Bash\u4e2d\u7684\u6f0f\u6d1e\u5b8c\u5168\u63a7\u5236\u76ee\u6807\u7cfb\u7edf\uff0c\u8fd9\u4e00\u6f0f\u6d1e\u53ef\u80fd\u5f71\u54cd\u57fa\u4e8eUnix\u7684\u64cd\u4f5c\u7cfb\u7edf\uff0c\u5305\u62ecLinux\u548cMac OS X\u3002<\/p>\n<p>\u68c0\u6d4b\u65b9\u5f0f\uff1a<\/p>\n<p>\u767b\u5f55SSH\uff0c\u8f93\u5165<\/p>\n<pre class=\"prettyprint lang-bsh\">env x='() { :;}; echo vulnerable' bash -c \"echo this is a test\"<\/pre>\n<p>\u5982\u679c\u663e\u793aYou are vulnerable\uff0c\u5f88\u9057\u61be\uff0c\u5fc5\u987b\u7acb\u5373\u6253\u4e0a\u5b89\u5168\u8865\u4e01\u4fee\u590d\u3002<\/p>\n<p>\u4fee\u590d\u65b9\u6cd5\uff1a<\/p>\n<p>\u8fd0\u884c\u4ee5\u4e0b\u547d\u4ee4\u8fdb\u884c\u5347\u7ea7\u5904\u7406:<br \/>\n# yum update bash<\/p>\n<p>\u6216\u8005\u7f16\u8bd1<\/p>\n<pre class=\"prettyprint lang-bsh\">wget http:\/\/ftp.gnu.org\/gnu\/bash\/bash-4.3.tar.gz\ntar zxf bash-4.3.tar.gz ; cd bash-4.3\nwget -r -nd -np http:\/\/ftp.gnu.org\/gnu\/bash\/bash-4.3-patches\/\nfor BP in `ls bash43-*|grep -v sig`; do patch -p0 &lt; $BP; done\n.\/configure \nmake &amp;&amp; make install<\/pre>\n<p>\u6253\u4e0a\u8865\u4e01\u4e4b\u540e\u8981\u8fdb\u884c\u91cd\u542f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Bash\u662f\u4e00\u6b3e\u5728\u5f88\u591aUnix\u7535\u8111\u4e2d\u7528\u4e8e\u63a7\u5236\u547d\u4ee4\u63d0\u793a\u7b26\u7684\u8f6f\u4ef6\uff0c\u9ed1\u5ba2\u53ef\u4ee5\u501f\u52a9Bash\u4e2d\u7684\u6f0f\u6d1e\u5b8c\u5168\u63a7\u5236\u76ee\u6807\u7cfb\u7edf\uff0c\u8fd9\u4e00 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[12,13,14,15,16],"class_list":["post-25","post","type-post","status-publish","format-standard","hentry","category-vps","tag-bash"],"_links":{"self":[{"href":"https:\/\/blog.liangjinjin.cn\/index.php?rest_route=\/wp\/v2\/posts\/25","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.liangjinjin.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.liangjinjin.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.liangjinjin.cn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.liangjinjin.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=25"}],"version-history":[{"count":0,"href":"https:\/\/blog.liangjinjin.cn\/index.php?rest_route=\/wp\/v2\/posts\/25\/revisions"}],"wp:attachment":[{"href":"https:\/\/blog.liangjinjin.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=25"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.liangjinjin.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=25"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.liangjinjin.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=25"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}