2009-0746 | Linux Kernel make_indexed_dir input validation (XFDB-48872 / 43779)

CVSS Meta Temp Score

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Current Exploit Price (≈)

Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.

CTI Interest Score

Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.

6.2 $0-$5k 0.17

A vulnerability, which was classified as critical, was found in Linux Kernel (Operating System). Affected is the function make_indexed_dir. The manipulation with an unknown input leads to a privilege escalation vulnerability. CWE is classifying the issue as CWE-20. This is going to have an impact on availability.

The issue has been introduced in 10/09/2008. The weakness was shared 02/27/2009 (Website). The advisory is shared for download at xforce.iss.net. This vulnerability is traded as CVE-2009-0746 since 02/27/2009. The exploitability is told to be easy. The attack needs to be approached locally. The exploitation doesn’t require any form of authentication. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 08/04/2021).

The vulnerability was handled as a non-public zero-day exploit for at least 139 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 43779 (CentOS 5 : kernel (CESA-2009:1243)), 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 175171 (Debian Security Update for Linux-2.6 (DSA-1749)).

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 (48872), Vulnerability Center (SBV-23424) and Tenable (43779). The entries 46886, 46885, 46883 and 45918 are related to this item.




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: 🔍

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VulDB Base Score: 🔍
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NVD Base Score: 🔍

Class: Privilege escalation
ATT&CK: Unknown

Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 43779
Nessus Name: CentOS 5 : kernel (CESA-2009:1243)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 63681
OpenVAS Name: Debian Security Advisory DSA 1749-1 (linux-2.6)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfoedit

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

10/09/2008 🔍
02/20/2009 +134 days 🔍
02/24/2009 +4 days 🔍
02/27/2009 +2 days 🔍
02/27/2009 +0 days 🔍
02/27/2009 +0 days 🔍
09/08/2009 +193 days 🔍
03/17/2015 +2016 days 🔍
08/04/2021 +2332 days 🔍Vendor: https://www.kernel.org/

Advisory: xforce.iss.net
Status: Not defined
Confirmation: 🔍

CVE: CVE-2009-0746 (🔍)

X-Force: 48872
Vulnerability Center: 23424 – Linux Kernel 2.6.27- and 2.6.28- make_indexed_dir Function Local DoS Vulnerability, Medium
OSVDB: 52202 – Linux Kernel fs/ext4/namei.c make_indexed_dir() Function Ext4 File System Handling DoS

See also: 🔍

Created: 03/17/2015 16:11
Updated: 08/04/2021 18:31
Changes: (1) source_nessus_risk
Complete: 🔍


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