full-disclosure - [FD] [FIXED TYPO **] CVE-2018-9233 Sophos Endpoint Protection Control Panel v10.7 / Insecure Crypto

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Message-ID: <CAFD2FDOK8MOSJXyk7F2pO1mzOrRqWhKTA7LDmOBOcV+X+O6K5w@mail.gmail.com>
Date: Wed, 4 Apr 2018 08:10:47 -0400
From: hyp3rlinx <apparitionsec@...il.com>
To: fulldisclosure@...lists.org
Subject: [FD] [FIXED TYPO **] CVE-2018-9233 Sophos Endpoint Protection
 Control Panel v10.7 / Insecure Crypto

[+] Credits: John Page (aka hyp3rlinx)
[+] Website: hyp3rlinx.altervista.org
[+] Source:
http://hyp3rlinx.altervista.org/advisories/SOPHOS-ENDPOINT-PROTECTION-CONTROL-PANEL-v10.7-INSECURE-CRYPTO-CVE-2018-9233.txt
[+] ISR: Apparition Security

Vendor:
==========
www.sophos.com

Product:
===========
Sophos Endpoint Protection - Control Panel v10.7

Sophos Endpoint Protection helps secure your workstation by adding
prevention, detection, and response technology on top of your operating
system.
Sophos Endpoint Protection is designed for workstations running Windows and
macOS. It adds exploit technique mitigations, CryptoGuard anti-ransomware,
anti-malware, web security, malicious traffic detection, and deep system
cleanup.

Vulnerability Type:
===================
Insecure Crypto

CVE Reference:
==============
CVE-2018-9233

Security Issue:
================
Sophos endpoint protection control panel authentication uses weak unsalted
unicoded cryptographic hash (SHA1) function, not using salt allows
attackers that gain access to hash
ability to conduct faster cracking attacks using pre-computed dictionaries,
e.g. rainbow tables. This can potentially result in unauthorized access
that could allow for
changing of settings, whitelist or unquarantine files.

Password and config for Sophos endpoint protection control panel is stored
here:
C:\ProgramData\Sophos\Sophos Anti-Virus\Config\machine.xml

e.g.

SHA1 (Unicode) encoding non salted pass = abc123

<TamperProtectionManagement><settings>
<enabled>true</enabled><password>689307D2FC53AF0FB941BC1BB42737CE4F3EF540</password></settings>
</TamperProtectionManagement>

Using PHP's sha1 function with "mb_convert_encoding" as UTF-16LE we can
verify.

C:\>php -r "print sha1(mb_convert_encoding('abc123', 'UTF-16LE', 'UTF-8'));"
689307d2fc53af0fb941bc1bb42737ce4f3ef540

Network Access:
===============
Local

Severity:
=========
Low

Disclosure Timeline:
=============================
Vendor Notification: December 4, 2017
Vendor Acknowledgement: December 12, 2017
Vendor request additional time before disclosing.
additional time has passed.
April 4, 2018  : Public Disclosure

[+] Disclaimer
The information contained within this advisory is supplied "as-is" with no
warranties or guarantees of fitness of use or otherwise.
Permission is hereby granted for the redistribution of this advisory,
provided that it is not altered except by reformatting it, and
that due credit is given. Permission is explicitly given for insertion in
vulnerability databases and similar, provided that due credit
is given to the author. The author is not responsible for any misuse of the
information contained herein and accepts no responsibility
for any damage caused by the use or misuse of this information. The author
prohibits any malicious use of security related information
or exploits by the author or elsewhere. All content (c).

hyp3rlinx

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