Google Android up to 4.3 Authentication Verification com.android.settings.ChooseLockGeneric access control

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
4.4$0-$5k0.00

Summaryinfo

A vulnerability categorized as problematic has been discovered in Google Android up to 4.3. Affected is an unknown function of the file com.android.settings.ChooseLockGeneric of the component Authentication Verification. Executing a manipulation can lead to access control. This vulnerability is tracked as CVE-2013-6271. Moreover, an exploit is present.

Detailsinfo

A vulnerability has been found in Google Android up to 4.3 (Smartphone Operating System) and classified as problematic. This vulnerability affects an unknown functionality of the file com.android.settings.ChooseLockGeneric of the component Authentication Verification. The manipulation with an unknown input leads to a access control vulnerability. The CWE definition for the vulnerability is CWE-264. As an impact it is known to affect confidentiality, and integrity. CVE summarizes:

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.

The bug was discovered 10/11/2013. The weakness was disclosed 11/27/2013 with Curesec Research Team as Cure-20131011 as not defined blog post (Blog). The advisory is available at cureblog.de. The vendor was not involved in the coordination of the public release. This vulnerability was named CVE-2013-6271 since 10/24/2013. The exploitation appears to be easy. Local access is required to approach this attack. The successful exploitation needs a single authentication. Technical details and also a public exploit are known. This vulnerability is assigned to T1068 by the MITRE ATT&CK project. The advisory points out:

The vulnerability described here enables any rogue app at any time to remove all existing device locks activated by a user.

After 6 days, there has been an exploit disclosed. It is declared as highly functional. The vulnerability was handled as a non-public zero-day exploit for at least 47 days. During that time the estimated underground price was around $25k-$100k.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at X-Force (89471), SecurityFocus (BID 63992†), OSVDB (100621†) and Vulnerability Center (SBV-42731†). Additional details are provided at scmagazine.com. Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.4
VulDB Meta Temp Score: 4.4

VulDB Base Score: 4.4
VulDB Temp Score: 4.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Access control
CWE: CWE-264
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Access: Public
Status: Highly functional

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

MetaSploit ID: remove_lock.rb
MetaSploit Name: Android Settings Remove Device Locks (4.0-4.3)
MetaSploit File: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍
Exploit Delay Time: 🔍

Timelineinfo

10/11/2013 🔍
10/11/2013 +0 days 🔍
10/24/2013 +13 days 🔍
11/27/2013 +34 days 🔍
11/27/2013 +0 days 🔍
11/27/2013 +0 days 🔍
12/03/2013 +6 days 🔍
12/04/2013 +1 days 🔍
12/14/2013 +10 days 🔍
12/25/2013 +11 days 🔍
06/02/2021 +2716 days 🔍

Sourcesinfo

Vendor: google.com

Advisory: Cure-20131011
Organization: Curesec Research Team
Status: Not defined

CVE: CVE-2013-6271 (🔍)
GCVE (CVE): GCVE-0-2013-6271
GCVE (VulDB): GCVE-100-11362
X-Force: 89471
SecurityFocus: 63992 - Google Android 'com.android.settings.ChooseLockGeneric' Class Remote Security Bypass Vulnerability
OSVDB: 100621
SecurityTracker: 1029410
Vulnerability Center: 42731 - Android 4.0 - 4.3 Remote Security Bypass Vulnerability by Removing Device Locks, High

scip Labs: https://www.scip.ch/en/?labs.20150917
Misc.: 🔍

Entryinfo

Created: 12/04/2013 14:49
Updated: 06/02/2021 15:31
Changes: 12/04/2013 14:49 (67), 08/21/2017 08:49 (11), 06/02/2021 15:31 (3)
Complete: 🔍
Committer: olku
Cache ID: 216:AB8:103

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Want to stay up to date on a daily basis?

Enable the mail alert feature now!