Linux Kernel up to 3.6 No-Journal Filesystem fs/ext4/namei.c input validation

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5.0$0-$5k0.00

Summaryinfo

A vulnerability marked as problematic has been reported in Linux Kernel up to 3.6. This affects an unknown function of the file fs/ext4/namei.c of the component No-Journal Filesystem Handler. Performing a manipulation results in input validation. This vulnerability was named CVE-2015-7509. The attack needs to be approached locally. There is no available exploit. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, was found in Linux Kernel up to 3.6 (Operating System). This affects an unknown code of the file fs/ext4/namei.c of the component No-Journal Filesystem Handler. The manipulation with an unknown input leads to a input validation vulnerability. CWE is classifying the issue as CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

fs/ext4/namei.c in the Linux kernel before 3.7 allows physically proximate attackers to cause a denial of service (system crash) via a crafted no-journal filesystem, a related issue to CVE-2013-2015.

The weakness was presented 12/28/2015 (Website). It is possible to read the advisory at security-tracker.debian.org. This vulnerability is uniquely identified as CVE-2015-7509 since 09/29/2015. Attacking locally is a requirement. No form of authentication is needed for exploitation. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 87651 (SUSE SLED11 / SLES11 Security Update : kernel (SUSE-SU-2015:2339-1)), 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 168771 (SUSE Enterprise Linux Security update for the Linux Kernel (SUSE-SU-2016:1203-1)).

Upgrading to version 3.7 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 (87651), SecurityFocus (BID 76005†) and Vulnerability Center (SBV-55428†). See VDB-8569, VDB-77497, VDB-78541 and VDB-79223 for similar entries. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.1
VulDB Meta Temp Score: 5.0

VulDB Base Score: 5.8
VulDB Temp Score: 5.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 4.4
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 87651
Nessus Name: SUSE SLED11 / SLES11 Security Update : kernel (SUSE-SU-2015:2339-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 871165
OpenVAS Name: RedHat Update for kernel RHSA-2016:0855-01
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Kernel 3.7
Patch: git.kernel.org

Timelineinfo

09/29/2015 🔍
12/22/2015 +84 days 🔍
12/28/2015 +6 days 🔍
12/28/2015 +0 days 🔍
12/28/2015 +0 days 🔍
12/29/2015 +1 days 🔍
12/29/2015 +0 days 🔍
12/29/2015 +0 days 🔍
07/01/2022 +2376 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: c9b92530a723ac5ef8e352885a1862b18f31b2f5
Status: Not defined
Confirmation: 🔍

CVE: CVE-2015-7509 (🔍)
GCVE (CVE): GCVE-0-2015-7509
GCVE (VulDB): GCVE-100-79923
SecurityFocus: 76005
SecurityTracker: 1034559
Vulnerability Center: 55428 - Linux Kernel <3.7 Local DoS via no-journal Filesystem, Medium

See also: 🔍

Entryinfo

Created: 12/29/2015 13:21
Updated: 07/01/2022 15:11
Changes: 12/29/2015 13:21 (61), 06/20/2018 08:24 (22), 07/01/2022 15:05 (6), 07/01/2022 15:11 (1)
Complete: 🔍
Cache ID: 216:0A3:103

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