Linux Kernel 2.6.28.2 fuse_direct_io resource management

CVSS Meta Temp Score
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CTI Interest Score
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6.2$0-$5k0.00

Summaryinfo

A vulnerability categorized as problematic has been discovered in Linux Kernel 2.6.28.2. This issue affects the function fuse_direct_io. Such manipulation leads to resource management. This vulnerability is uniquely identified as CVE-2009-4021. No exploit exists.

Detailsinfo

A vulnerability was found in Linux Kernel 2.6.28.2 (Operating System). It has been rated as critical. Affected by this issue is the function fuse_direct_io. The manipulation with an unknown input leads to a resource management vulnerability. Using CWE to declare the problem leads to CWE-399. Impacted is availability. CVE summarizes:

The fuse_direct_io function in fs/fuse/file.c in the fuse subsystem in the Linux kernel before 2.6.32-rc7 might allow attackers to cause a denial of service (invalid pointer dereference and OOPS) via vectors possibly related to a memory-consumption attack.

The issue has been introduced in 12/25/2008. The weakness was disclosed 11/25/2009 (Website). The advisory is shared for download at rhn.redhat.com. This vulnerability is handled as CVE-2009-4021. The exploitation is known to be easy. The attack needs to be approached locally. No form of authentication is required for exploitation. There are known technical details, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 335 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 44096 (CentOS 5 : kernel (CESA-2010:0046)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CentOS Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 165664 (SUSE Enterprise Linux Security Update Linux Kernel (SUSE-SA:2009:061)).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at X-Force (54358), Tenable (44096), SecurityFocus (BID 37069†) and Vulnerability Center (SBV-24736†). The entries VDB-40214, VDB-51836, VDB-51835 and VDB-51834 are pretty similar. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.2
VulDB Meta Temp Score: 6.2

VulDB Base Score: 6.2
VulDB Temp Score: 6.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Resource management
CWE: CWE-399 / CWE-404
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: 44096
Nessus Name: CentOS 5 : kernel (CESA-2010:0046)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 66954
OpenVAS Name: Debian Security Advisory DSA 2003-1 (linux-2.6)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

12/25/2008 🔍
11/19/2009 +329 days 🔍
11/19/2009 +0 days 🔍
11/20/2009 +0 days 🔍
11/25/2009 +5 days 🔍
11/25/2009 +0 days 🔍
02/02/2010 +69 days 🔍
03/18/2015 +1870 days 🔍
08/28/2021 +2355 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: rhn.redhat.com
Status: Not defined
Confirmation: 🔍

CVE: CVE-2009-4021 (🔍)
GCVE (CVE): GCVE-0-2009-4021
GCVE (VulDB): GCVE-100-50912

OVAL: 🔍
IAVM: 🔍

X-Force: 54358
SecurityFocus: 37069 - Linux Kernel 'fuse_direct_io()' Invalid Pointer Dereference Local Denial of Service Vulnerability
Vulnerability Center: 24736 - Linux Kernel Prior to 2.6.32-rc7 \x27fuse_direct_io()\x27 Invalid Pointer Local DoS Vulnerability, Low

See also: 🔍

Entryinfo

Created: 03/18/2015 15:15
Updated: 08/28/2021 06:42
Changes: 03/18/2015 15:15 (64), 02/20/2017 10:21 (10), 08/28/2021 06:27 (4), 08/28/2021 06:42 (1)
Complete: 🔍
Cache ID: 216:0A5:103

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