Google Android EXT4 File System out-of-bounds write

CVSS Meta Temp Score
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CTI Interest Score
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5.1$0-$5k0.00

Summaryinfo

A vulnerability has been found in Google Android and classified as critical. Affected by this vulnerability is an unknown functionality of the component EXT4 File System. The manipulation leads to out-of-bounds write. This vulnerability is uniquely identified as CVE-2018-10882. Local access is required to approach this attack. No exploit exists. To fix this issue, it is recommended to deploy a patch.

Detailsinfo

A vulnerability was found in Google Android (Smartphone Operating System) (the affected version unknown). It has been rated as critical. This issue affects an unknown part of the component EXT4 File System. The manipulation with an unknown input leads to a out-of-bounds write vulnerability. Using CWE to declare the problem leads to CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

A flaw was found in the Linux kernel's ext4 filesystem. A local user can cause an out-of-bound write in in fs/jbd2/transaction.c code, a denial of service, and a system crash by unmounting a crafted ext4 filesystem image.

The bug was discovered 06/17/2018. The weakness was disclosed 01/07/2019 as Android Security Bulletin - January 2019 as confirmed security bulletin (Website). It is possible to read the advisory at source.android.com. The identification of this vulnerability is CVE-2018-10882 since 05/09/2018. Attacking locally is a requirement. A simple authentication is necessary for exploitation. The technical details are unknown and an exploit is not publicly available.

The vulnerability was handled as a non-public zero-day exploit for at least 40 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 117800 (SUSE SLES12 Security Update : kernel (SUSE-SU-2018:2858-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 171490 (SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2018:2776-1)).

Applying a patch is able to eliminate this problem. 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 Tenable (117800) and SecurityFocus (BID 104878†). The entries VDB-120200, VDB-120201, VDB-120202 and VDB-121903 are pretty similar. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.2
VulDB Meta Temp Score: 5.1

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

CNA Base Score: 4.8
CNA Vector (Red Hat, Inc.): 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Out-of-bounds write
CWE: CWE-787 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Yes
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 117800
Nessus Name: SUSE SLES12 Security Update : kernel (SUSE-SU-2018:2858-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: git.kernel.org

Timelineinfo

04/16/2018 🔍
05/09/2018 +23 days 🔍
06/17/2018 +39 days 🔍
07/27/2018 +40 days 🔍
09/27/2018 +62 days 🔍
01/05/2019 +100 days 🔍
01/07/2019 +2 days 🔍
02/04/2019 +28 days 🔍
07/04/2023 +1611 days 🔍

Sourcesinfo

Vendor: google.com

Advisory: Android Security Bulletin - January 2019
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2018-10882 (🔍)
GCVE (CVE): GCVE-0-2018-10882
GCVE (VulDB): GCVE-100-130427
SecurityFocus: 104878 - Linux Kernel 'ext4_ext_drop_refs()' Function Local Denial of Service Vulnerability

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

Entryinfo

Created: 02/04/2019 08:45
Updated: 07/04/2023 14:00
Changes: 02/04/2019 08:45 (66), 05/07/2020 16:10 (14), 07/04/2023 13:54 (4), 07/04/2023 14:00 (12)
Complete: 🔍
Cache ID: 216:F68:103

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