CVE-2020-15506: MobileIron Core Auth Bypass Vulnerability

CVE-2020-15506 Overview

CVE-2020-15506 is an authentication bypass vulnerability affecting MobileIron Core & Connector, a widely deployed enterprise mobility management (EMM) platform used by organizations worldwide to manage mobile devices and secure corporate data. This vulnerability allows remote attackers to bypass authentication mechanisms via unspecified vectors, potentially granting unauthorized access to enterprise mobile management infrastructure.

Critical Impact

Remote attackers can bypass authentication mechanisms without any privileges or user interaction, potentially gaining complete control over the MobileIron management platform and all managed mobile devices.

Affected Products

• MobileIron Core versions 10.3.0.3 and earlier, 10.4.0.0-10.4.0.3, 10.5.1.0, 10.5.2.0, and 10.6.0.0
• MobileIron Connector (same version range)
• MobileIron Cloud
• MobileIron Enterprise Connector
• MobileIron Reporting Database
• MobileIron Sentry

Discovery Timeline

• 2020-07-07 - CVE-2020-15506 published to NVD
• 2024-11-21 - Last updated in NVD database

Technical Details for CVE-2020-15506

Vulnerability Analysis

This authentication bypass vulnerability exists in MobileIron Core & Connector, an enterprise mobility management solution that serves as a critical security control point for organizations managing mobile device fleets. The vulnerability allows remote attackers to circumvent authentication controls, effectively bypassing the security boundary that protects administrative and management functions.

The authentication bypass is particularly concerning given MobileIron's role in enterprise environments. As an EMM platform, MobileIron Core manages device enrollment, policy enforcement, application distribution, and corporate data protection across mobile devices. Successful exploitation could allow an attacker to manipulate device policies, access sensitive corporate information, deploy malicious applications to managed devices, or completely compromise the enterprise mobile infrastructure.

The vulnerability requires no privileges or user interaction to exploit, making it particularly dangerous for internet-facing MobileIron deployments. Organizations using affected versions should treat this as a high-priority security concern requiring immediate remediation.

Root Cause

The vulnerability stems from a flaw in the authentication mechanism within MobileIron Core & Connector. While specific technical details have not been publicly disclosed by the vendor (classified as NVD-CWE-noinfo), the authentication bypass allows requests to be processed without proper credential validation. This type of vulnerability typically arises from logic flaws in authentication state handling, improper session validation, or bypasses in authentication middleware that fail to properly validate all code paths.

Attack Vector

The attack can be executed remotely over the network without requiring any authentication or user interaction. An attacker targeting a vulnerable MobileIron deployment would:

1. Identify an exposed MobileIron Core or Connector instance on the network
2. Craft requests that exploit the authentication bypass mechanism
3. Gain unauthorized access to the management platform
4. Potentially pivot to compromise managed mobile devices or access sensitive corporate data

The specific technical vectors have been withheld to prevent widespread exploitation. Administrators should refer to MobileIron's Security Updates Blog for detailed technical guidance on this vulnerability.

Detection Methods for CVE-2020-15506

Indicators of Compromise

• Unusual authentication events or successful logins from unexpected IP addresses in MobileIron logs
• Administrative actions performed without corresponding authenticated sessions
• Unexpected changes to device policies, enrollment configurations, or application deployments
• Network traffic patterns indicating reconnaissance or exploitation attempts against MobileIron endpoints

Detection Strategies

• Monitor MobileIron administrative logs for authentication anomalies or unauthorized administrative actions
• Implement network-level monitoring for unusual traffic patterns to MobileIron management interfaces
• Deploy endpoint detection solutions like SentinelOne Singularity to identify post-exploitation activity on managed devices
• Review access logs for requests that bypass expected authentication flows

Monitoring Recommendations

• Enable detailed logging on MobileIron Core and Connector components
• Configure SIEM alerts for failed and successful authentication attempts from unusual sources
• Implement network segmentation monitoring to detect lateral movement following potential compromise
• Regularly audit MobileIron configuration changes and administrative user accounts

How to Mitigate CVE-2020-15506

Immediate Actions Required

• Update MobileIron Core & Connector to the latest patched version immediately
• Restrict network access to MobileIron management interfaces to trusted IP ranges only
• Review administrative access logs for signs of unauthorized access prior to patching
• Implement additional network segmentation around MobileIron infrastructure
• Consider temporarily isolating MobileIron from the internet until patching is complete

Patch Information

MobileIron has released security updates addressing this vulnerability. Organizations should apply the latest patches available from MobileIron. Detailed patch information and update instructions are available in the MobileIron Security Updates Blog.

For organizations running affected versions (10.3.0.3 and earlier, 10.4.0.0-10.4.0.3, 10.5.1.0, 10.5.2.0, or 10.6.0.0), upgrading to a patched version is the only complete remediation.

Workarounds

• Implement strict network access controls limiting MobileIron management interface access to authorized administrators only
• Deploy a web application firewall (WAF) in front of MobileIron to add an additional authentication layer
• Enable multi-factor authentication for all administrative access where supported
• Monitor for exploitation attempts while awaiting patch deployment
• Consider placing MobileIron behind a VPN to reduce attack surface

# Example: Restrict access to MobileIron management ports using iptables
# Adjust IP ranges and ports according to your environment
iptables -A INPUT -p tcp --dport 443 -s 10.0.0.0/8 -j ACCEPT
iptables -A INPUT -p tcp --dport 443 -j DROP
# Note: Consult MobileIron documentation for specific ports used in your deployment