Linux Kernel EXT4 File System jbd2_journal_dirty_metadata 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 was found in Linux Kernel. It has been rated as critical. Impacted is the function jbd2_journal_dirty_metadata of the component EXT4 File System. Performing a manipulation results in out-of-bounds write. This vulnerability is known as CVE-2018-10883. Attacking locally is a requirement. No exploit is available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in Linux Kernel (Operating System) (version unknown). It has been classified as critical. This affects the function jbd2_journal_dirty_metadata of the component EXT4 File System. The manipulation with an unknown input leads to a out-of-bounds write vulnerability. CWE is classifying the issue as CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. This is going to have an impact on 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-bounds write in jbd2_journal_dirty_metadata(), a denial of service, and a system crash by mounting and operating on a crafted ext4 filesystem image.

The bug was discovered 06/16/2018. The weakness was published 07/30/2018 by ERNE as confirmed bug report (Bugzilla). The advisory is shared at bugzilla.redhat.com. This vulnerability is uniquely identified as CVE-2018-10883 since 05/09/2018. An attack has to be approached locally. The successful exploitation requires a authentication. Technical details are known, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 32 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 111165 (Debian DLA-1423-1 : linux-4.9 new package (Spectre)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 157849 (Oracle Enterprise Linux Security Update for kernel (ELSA-2018-3083)).

Upgrading 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 Tenable (111165) and SecurityFocus (BID 106009†). Similar entries are available at VDB-81153, VDB-87616, VDB-105605 and VDB-109511. 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: 111165
Nessus Name: Debian DLA-1423-1 : linux-4.9 new package (Spectre)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Patch: git.kernel.org

Timelineinfo

05/09/2018 🔍
06/16/2018 +38 days 🔍
07/18/2018 +32 days 🔍
07/20/2018 +2 days 🔍
07/30/2018 +9 days 🔍
07/30/2018 +0 days 🔍
07/31/2018 +1 days 🔍
11/24/2018 +116 days 🔍
04/27/2023 +1615 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: RHSA-2018:2948
Researcher: ERNE
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2018-10883 (🔍)
GCVE (CVE): GCVE-0-2018-10883
GCVE (VulDB): GCVE-100-122325
SecurityFocus: 106009 - Linux Kernel CVE-2018-16862 Local Security Bypass Vulnerability

See also: 🔍

Entryinfo

Created: 07/31/2018 07:02
Updated: 04/27/2023 17:58
Changes: 07/31/2018 07:02 (75), 03/11/2020 09:58 (7), 04/27/2023 17:50 (5), 04/27/2023 17:58 (12)
Complete: 🔍
Cache ID: 216::103

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