2009-0746 | Linux Kernel make_indexed_dir input validation (XFDB-48872 / 43779)
|CVSS Meta Temp Score
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|Current Exploit Price (≈)
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|CTI Interest Score
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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.
VulDB Meta Base Score: 6.2
VulDB Meta Temp Score: 6.2
NVD Base Score: 🔍
Class: Privilege escalation
Status: Not defined
0-Day Time: 🔍
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/
Vulnerability Center: 23424 – Linux Kernel 2.6.27-18.104.22.168 and 2.6.28-22.214.171.124 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: 🔍
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