Adversaries may collect keychain data from an iOS device to acquire credentials. Keychains are the built-in way for iOS to keep track of users' passwords and credentials for many services and features such as Wi-Fi passwords, websites, secure notes, certificates, private keys, and VPN credentials. On the device, the keychain database is stored outside of application sandboxes to prevent unauthorized access to the raw data. Standard iOS APIs allow applications access to their own keychain contained within the database. By utilizing a privilege escalation exploit or existing root access, adversaries can access the entire encrypted database.(Citation: Apple Keychain Services)(Citation: Elcomsoft Decrypt Keychain)
A variety of methods exist that can be used to enable enterprises to identify compromised (e.g. rooted/jailbroken) devices, whether using security mechanisms built directly into the device, third-party mobile security applications, enterprise mobility management (EMM)/mobile device management (MDM) capabilities, or other methods. Some methods may be trivial to evade while others may be more sophisticated.
M1001Security UpdatesInstall security updates in response to discovered vulnerabilities. Purchase devices with a vendor and/or mobile carrier commitment to provide security updates in a prompt manner for a set period of time. Decommission devices that will no longer receive security updates. Limit or block access to enterprise resources from devices that have not installed recent security updates. On Android devices, access can be controlled based on each device's security patch level. On iOS devices, access can be controlled based on the iOS version.
M1002AttestationEnable remote attestation capabilities when available (such as Android SafetyNet or Samsung Knox TIMA Attestation) and prohibit devices that fail the attestation from accessing enterprise resources.
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