A Critical Vulnerabilities Discovered in Lenovo Vibe Android Mobiles Phones which leads to Local Privilege Escalation to the Victims device that is not protected with a secure lock screen.
It helps to Escalate the root Access “Jail Breaking” and it leads to change the Device operations and devices Core Functionalities.
This Critical vulnerability Presented in Lenovo products with an Android OS version earlier than Android Marshmallow 6.0 may be vulnerable to the root exploit.
Lenovo Devices that have been upgraded to Marshmallow 6.0 is not Affected.
According to Lenovo, these are the 3 Critical Vulnerabilities, leads to Escalate the Local Privilege.
Improper access controls on the nac_server component can be abused in conjunction with CVE-2017-3749 and CVE-2017-3750 to elevate privileges to the root user (commonly known as ‘rooting’ or “jail breaking” a device).
The Idea Friend Android application allows private data to be backed up and restored via Android Debug Bridge, which allows tampering leading to privilege escalation in conjunction with CVE-2017-3748 and CVE-2017-3750
The Lenovo Security Android application allows private data to be backed up and restored via Android Debug Bridge, which allows tampering leading to privilege escalation in conjunction with CVE-2017-3748
Recommendations for Protect Yourself
Lenovo Highly Recommanded to users ,“Do not Jailbreak” their Smart Phones which cause escalate the Privileges easily.
Users on older Android releases (earlier than Android 6.0 Marshmallow) are advised to take the following actions:
1) If you have enabled the Android Developer Options menu on your device (uncommon), disable ADB when not in use
2) Enable lock screen authentication mechanisms; e.g. PIN/Password protection
3) If updates are available, follow the prompts to install.
Devices not impacted as they have already been upgraded:
Devices impacted on Android Lollipop that have been patched include:
Affected products with no fix available:
(refer to the “Mitigation Strategy for Customers” section above)
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