Vulnerability CVE-2013-6271
Published: 2013-12-14   Modified: 2013-12-15

Description:
Android 4.0 through 4.3 allows attackers to bypass intended access restrictions and remove device locks via a crafted application that invokes the updateUnlockMethodAndFinish method in the com.android.settings.ChooseLockGeneric class with the PASSWORD_QUALITY_UNSPECIFIED option.

See advisories in our WLB2 database:
Topic
Author
Date
High
AndroidOS 4.3 / com.android.settings Permission Bypass
Curesec Research...
28.11.2013

Type:

CWE-264

 (Permissions, Privileges, and Access Controls)

CVSS2 => (AV:N/AC:M/Au:N/C:C/I:C/A:N)

CVSS Base Score
Impact Subscore
Exploitability Subscore
8.8/10
9.2/10
8.6/10
Exploit range
Attack complexity
Authentication
Remote
Medium
No required
Confidentiality impact
Integrity impact
Availability impact
Complete
Complete
None
Affected software
Google -> Android 

 References:
https://cureblog.de/2013/11/cve-2013-6271-remove-device-locks-from-android-phone/
http://www.theregister.co.uk/2013/12/10/android_has_lockbypass_bug/
http://www.securitytracker.com/id/1029410
http://seclists.org/fulldisclosure/2013/Nov/204
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