Dark Reading is part of the Informa Tech Division of Informa PLC

This site is operated by a business or businesses owned by Informa PLC and all copyright resides with them.Informa PLC's registered office is 5 Howick Place, London SW1P 1WG. Registered in England and Wales. Number 8860726.

Threat Intelligence

Security Flaw Found in Apple Mobile Device Enrollment Program

Authentication weakness in Apple's DEP could open a window of opportunity for attackers.

Researchers have discovered a security flaw in the authentication process of the Apple Device Enrollment Program (DEP), an Apple service that helps enterprises enroll iOS, macOS, and tvOS devices in mobile device management systems.

The problem is centered around the authentication required (or not required) for those enrolled devices.

"The vulnerability lets someone send a valid Apple serial number to the server and retrieve the DEP profile," says James Barclay, senior R&D Engineer and lead analyst at Duo Labs, which found the bug.

And that doesn't necessarily mean that the attacker has seen the devices. "The key space is small enough that the attacker could conceivably generate brute-force numbers and submit them in bulk until they get a valid response," explains Barclay. While the DEP profile contains information on networks and privileges that could be useful to expand an attack, the news could be much worse for some organizations with specific MDM configurations.

"Many configurations of MDM don't require further information on the system it's recording," says Rich Smith, director of Duo Labs. "If the MDM server doesn't have authentication requirements, an organization that's dispensing the certificates for their VPN through the MDM server could see an attacker be enrolled, get the certificate and VPN configuration information, and be an authorized device in the network."

And at that point, the malicious device is free to roam the network doing its dirty work with little to slow it down, he says.

As of the time of this posting, there is no evidence that this attack has been used in the wild, Smith says.

Duo Labs, which detailed its findings in a blog post published today, followed a 90-day disclosure policy for the vulnerability, notifying Apple approximately 3 months before issuing their report. Duo will not publicly release the code to exploit the vulnerability, Smith says.

Remediating the vulnerability is not something an individual customer can do much about, Smith says. "It's less a bug and more a flaw; the serial number as the only information used to authenticate a device is the source of the issue."

"Fixing a flaw may be more complex than fixing a bug," he notes.

The serial number is not sufficient for authentication, he says. It's not a "strong enough form of authentication to provide the properties we'd like to see for enrolling in an organization's fleet," Smith says.

Meanwhile, Apple may not have to release a patch for the flaw to users. Barclay points out that the issue exists in server-based code within Apple; remediation may happen at any time, with little or no notice to users of the service. Apple has not yet responded publicly about the flaw.

Related Content:

 

 

Black Hat Europe returns to London Dec 3-6 2018  with hands-on technical Trainings, cutting-edge Briefings, Arsenal open-source tool demonstrations, top-tier security solutions and service providers in the Business Hall. Click for information on the conference and to register.

Curtis Franklin Jr. is Senior Editor at Dark Reading. In this role he focuses on product and technology coverage for the publication. In addition he works on audio and video programming for Dark Reading and contributes to activities at Interop ITX, Black Hat, INsecurity, and ... View Full Bio
 

Recommended Reading:

Comment  | 
Print  | 
More Insights
Comments
Newest First  |  Oldest First  |  Threaded View
Cloud Security Startup Lightspin Emerges From Stealth
Kelly Sheridan, Staff Editor, Dark Reading,  11/24/2020
Look Beyond the 'Big 5' in Cyberattacks
Robert Lemos, Contributing Writer,  11/25/2020
Why Vulnerable Code Is Shipped Knowingly
Chris Eng, Chief Research Officer, Veracode,  11/30/2020
Register for Dark Reading Newsletters
White Papers
Video
Cartoon Contest
Write a Caption, Win an Amazon Gift Card! Click Here
Latest Comment: We are really excited about our new two tone authentication system!
Current Issue
2021 Top Enterprise IT Trends
We've identified the key trends that are poised to impact the IT landscape in 2021. Find out why they're important and how they will affect you today!
Flash Poll
Twitter Feed
Dark Reading - Bug Report
Bug Report
Enterprise Vulnerabilities
From DHS/US-CERT's National Vulnerability Database
CVE-2020-15257
PUBLISHED: 2020-12-01
containerd is an industry-standard container runtime and is available as a daemon for Linux and Windows. In containerd before versions 1.3.9 and 1.4.3, the containerd-shim API is improperly exposed to host network containers. Access controls for the shim’s API socket verified that...
CVE-2020-9114
PUBLISHED: 2020-12-01
FusionCompute versions 6.3.0, 6.3.1, 6.5.0, 6.5.1 and 8.0.0 have a privilege escalation vulnerability. Due to improper privilege management, an attacker with common privilege may access some specific files and get the administrator privilege in the affected products. Successful exploit will cause pr...
CVE-2020-9117
PUBLISHED: 2020-12-01
HUAWEI nova 4 versions earlier than 10.0.0.165(C01E34R2P4) and SydneyM-AL00 versions earlier than 10.0.0.165(C00E66R1P5) have an out-of-bounds read and write vulnerability. An attacker with specific permissions crafts malformed packet with specific parameter and sends the packet to the affected prod...
CVE-2020-4126
PUBLISHED: 2020-12-01
HCL iNotes is susceptible to a sensitive cookie exposure vulnerability. This can allow an unauthenticated remote attacker to capture the cookie by intercepting its transmission within an http session. Fixes are available in HCL Domino and iNotes versions 10.0.1 FP6 and 11.0.1 FP2 and later.
CVE-2020-4129
PUBLISHED: 2020-12-01
HCL Domino is susceptible to a lockout policy bypass vulnerability in the LDAP service. An unauthenticated attacker could use this vulnerability to mount a brute force attack against the LDAP service. Fixes are available in HCL Domino versions 9.0.1 FP10 IF6, 10.0.1 FP6 and 11.0.1 FP1 and later.