VDB-93464 · CVE-2015-8961 · BID 94135

Google Android Kernel File System use after free

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.6$5k-$25k0.00

Summaryinfo

A vulnerability classified as very critical was found in Google Android. This affects an unknown function of the component Kernel File System. Such manipulation leads to use after free. This vulnerability is traded as CVE-2015-8961. An attack has to be approached locally. There is no exploit available. Applying a patch is advised to resolve this issue.

Detailsinfo

A vulnerability was found in Google Android (Smartphone Operating System) (version unknown). It has been rated as very critical. Affected by this issue is an unknown function of the component Kernel File System. The manipulation with an unknown input leads to a use after free vulnerability. Using CWE to declare the problem leads to CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. Impacted is confidentiality, integrity, and availability. CVE summarizes:

The __ext4_journal_stop function in fs/ext4/ext4_jbd2.c in the Linux kernel before 4.3.3 allows local users to gain privileges or cause a denial of service (use-after-free) by leveraging improper access to a certain error field.

The weakness was shared 11/07/2016 as Android Security Bulletin - November 2016 as confirmed security bulletin (Website). The advisory is shared for download at source.android.com. This vulnerability is handled as CVE-2015-8961 since 10/03/2016. The attack may be launched remotely. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $5k-$25k (estimation calculated on 09/30/2022). It is expected to see the exploit prices for this product increasing in the near future.

As 0-day the estimated underground price was around $25k-$100k.

Applying a patch is able to eliminate this problem. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at SecurityFocus (BID 94135†). The entries VDB-93466, VDB-93476, VDB-93458 and VDB-93459 are related to this item. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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License

Website

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

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Use after free
CWE: CWE-416 / CWE-119
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: Patch
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Patch: git.kernel.org

Timelineinfo

10/03/2016 🔍
11/07/2016 +35 days 🔍
11/07/2016 +0 days 🔍
11/08/2016 +1 days 🔍
11/09/2016 +1 days 🔍
11/16/2016 +7 days 🔍
09/30/2022 +2144 days 🔍

Sourcesinfo

Vendor: google.com

Advisory: Android Security Bulletin - November 2016
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2015-8961 (🔍)
GCVE (CVE): GCVE-0-2015-8961
GCVE (VulDB): GCVE-100-93464
SecurityFocus: 94135 - Linux kernel Local Use After Free Multiple Denial of Service Vulnerabilities

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

Entryinfo

Created: 11/09/2016 14:43
Updated: 09/30/2022 14:01
Changes: 11/09/2016 14:43 (56), 05/28/2019 10:51 (11), 09/30/2022 14:01 (4)
Complete: 🔍
Cache ID: 216:25A:103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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