Linux Kernel EXT4 File System fs/jbd2/transaction.c out-of-bounds write

CVSS Meta Temp Score
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CTI Interest Score
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5.2$0-$5k0.00

Summaryinfo

A vulnerability marked as critical has been reported in Linux Kernel. This vulnerability affects unknown code of the file fs/jbd2/transaction.c of the component EXT4 File System. Performing a manipulation results in out-of-bounds write. This vulnerability is identified as CVE-2018-10882. The attack is only possible with local access. There is not any exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical has been found in Linux Kernel (Operating System) (the affected version is unknown). This affects an unknown code of the file fs/jbd2/transaction.c 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 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 released 07/27/2018 as Bug 200069 as confirmed bug report (Bugzilla). The advisory is shared at bugzilla.kernel.org. This vulnerability is uniquely identified as CVE-2018-10882 since 05/09/2018. An attack has to be approached locally. No form of authentication is needed for exploitation. Technical details are known, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 31 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 171490 (SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2018:2776-1)).

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 104878†). Entries connected to this vulnerability are available at VDB-117624, VDB-119386, VDB-119423 and VDB-119915. 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: 5.3
VulDB Meta Temp Score: 5.2

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
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

04/16/2018 🔍
05/09/2018 +22 days 🔍
06/17/2018 +39 days 🔍
07/18/2018 +31 days 🔍
07/20/2018 +2 days 🔍
07/27/2018 +6 days 🔍
07/27/2018 +0 days 🔍
07/28/2018 +1 days 🔍
04/27/2023 +1734 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: Bug 200069
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2018-10882 (🔍)
GCVE (CVE): GCVE-0-2018-10882
GCVE (VulDB): GCVE-100-122301
SecurityFocus: 104878 - Linux Kernel 'ext4_ext_drop_refs()' Function Local Denial of Service Vulnerability

See also: 🔍

Entryinfo

Created: 07/28/2018 07:14
Updated: 04/27/2023 15:03
Changes: 07/28/2018 07:14 (76), 03/11/2020 08:18 (6), 04/27/2023 14:58 (4), 04/27/2023 15:03 (12)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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