Google Android up to 5.1.1 LMY49C/6.0 Update kernel/sys.c prctl_set_vma_anon_name access control

CVSS Meta Temp Score
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CTI Interest Score
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7.6$5k-$25k0.00

Summaryinfo

A vulnerability was found in Google Android up to 5.1.1 LMY49C/6.0 and classified as critical. The impacted element is the function prctl_set_vma_anon_name of the file kernel/sys.c of the component Update Handler. Executing a manipulation can lead to access control. This vulnerability appears as CVE-2015-6640. The attack requires local access. There is no available exploit. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Google Android up to 5.1.1 LMY49C/6.0 (Smartphone Operating System). It has been declared as critical. This vulnerability affects the function prctl_set_vma_anon_name of the file kernel/sys.c of the component Update Handler. 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, integrity, and availability. CVE summarizes:

The prctl_set_vma_anon_name function in kernel/sys.c in Android before 5.1.1 LMY49F and 6.0 before 2016-01-01 does not ensure that only one vma is accessed in a certain update action, which allows attackers to gain privileges or cause a denial of service (vma list corruption) via a crafted application, aka internal bug 20017123.

The weakness was presented 01/06/2016 as 20017123 as confirmed bug report (Website). The advisory is available at android.googlesource.com. This vulnerability was named CVE-2015-6640 since 08/21/2015. The exploitation appears to be difficult. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1068 by the MITRE ATT&CK project.

Upgrading to version 5.1.1 LMY49F or 6.0 2016-01-01 eliminates this vulnerability. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at SecurityFocus (BID 79840†) and Vulnerability Center (SBV-55616†). See VDB-80093, VDB-80094, VDB-80095 and VDB-80096 for similar entries. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.8
VulDB Meta Temp Score: 7.6

VulDB Base Score: 7.8
VulDB Temp Score: 7.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

CVSSv2info

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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: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Android 5.1.1 LMY49F/6.0 2016-01-01

Timelineinfo

08/21/2015 🔍
01/01/2016 +133 days 🔍
01/04/2016 +3 days 🔍
01/04/2016 +0 days 🔍
01/06/2016 +2 days 🔍
01/06/2016 +0 days 🔍
01/07/2016 +1 days 🔍
01/11/2016 +4 days 🔍
07/02/2022 +2364 days 🔍

Sourcesinfo

Vendor: google.com

Advisory: 20017123
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2015-6640 (🔍)
GCVE (CVE): GCVE-0-2015-6640
GCVE (VulDB): GCVE-100-80098
SecurityFocus: 79840 - Google Android Kernel CVE-2015-6640 Remote Privilege Escalation Vulnerability
SecurityTracker: 1034592
Vulnerability Center: 55616 - Google Android 4.4.4, 5.0, 5.1.1 and 6.0 Kernel Remote Privilege Escalation Vulnerability in prctl_set_vma_anon_name Function, Critical

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

Entryinfo

Created: 01/07/2016 09:44
Updated: 07/02/2022 14:12
Changes: 01/07/2016 09:44 (67), 06/20/2018 08:52 (10), 07/02/2022 14:12 (3)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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