Linux Kernel EXT4 File System ext4_ext_drop_refs out-of-bounds

CVSS Meta Temp Score
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CTI Interest Score
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5.9$0-$5k0.00

Summaryinfo

A vulnerability was found in Linux Kernel. It has been classified as critical. Affected by this issue is the function ext4_ext_drop_refs of the component EXT4 File System. This manipulation causes out-of-bounds. This vulnerability appears as CVE-2018-10877. The attack requires local access. There is no available exploit. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in Linux Kernel (Operating System) (unknown version). It has been declared as problematic. Affected by this vulnerability is the function ext4_ext_drop_refs of the component EXT4 File System. The manipulation with an unknown input leads to a out-of-bounds vulnerability. The CWE definition for the vulnerability is CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Linux kernel ext4 filesystem is vulnerable to an out-of-bound access in the ext4_ext_drop_refs() function when operating on a crafted ext4 filesystem image.

The bug was discovered 07/20/2018. The weakness was presented 07/18/2018 as confirmed bug report (Bugzilla). It is possible to read the advisory at bugzilla.redhat.com. This vulnerability is known as CVE-2018-10877 since 05/09/2018. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit.

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 immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (111165) and SecurityFocus (BID 104878†). See VDB-117624, VDB-119386, VDB-119423 and VDB-119915 for similar entries. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.9
VulDB Meta Temp Score: 5.9

VulDB Base Score: 4.0
VulDB Temp Score: 3.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.5
NVD Vector: 🔍

CNA Base Score: 7.3
CNA Vector (Red Hat, Inc.): 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
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NVD Base Score: 🔍

Exploitinginfo

Class: Out-of-bounds
CWE: CWE-125 / 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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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: 🔍

Reaction Time: 🔍
Exposure Time: 🔍

Timelineinfo

04/16/2018 🔍
05/09/2018 +23 days 🔍
07/18/2018 +69 days 🔍
07/18/2018 +0 days 🔍
07/18/2018 +0 days 🔍
07/18/2018 +0 days 🔍
07/20/2018 +2 days 🔍
07/20/2018 +0 days 🔍
04/18/2023 +1733 days 🔍

Sourcesinfo

Vendor: kernel.org

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

CVE: CVE-2018-10877 (🔍)
GCVE (CVE): GCVE-0-2018-10877
GCVE (VulDB): GCVE-100-121903
SecurityFocus: 104878 - Linux Kernel 'ext4_ext_drop_refs()' Function Local Denial of Service Vulnerability

See also: 🔍

Entryinfo

Created: 07/18/2018 20:22
Updated: 04/18/2023 13:17
Changes: 07/18/2018 20:22 (73), 03/08/2020 10:15 (6), 04/18/2023 13:11 (4), 04/18/2023 13:17 (12)
Complete: 🔍
Cache ID: 216:DAD:103

Be aware that VulDB is the high quality source for vulnerability data.

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