Linux Kernel up to 2.6.17.7 ext3 File System Inode Number deadlock

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 up to 2.6.17.7. It has been classified as critical. The impacted element is an unknown function of the component ext3 File System. Performing a manipulation as part of Inode Number results in deadlock. This vulnerability is reported as CVE-2006-3468. Moreover, an exploit is present. The affected component should be disabled.

Detailsinfo

A vulnerability was found in Linux Kernel up to 2.6.17.7 (Operating System). It has been classified as critical. This affects an unknown code block of the component ext3 File System. The manipulation as part of a Inode Number leads to a deadlock vulnerability. CWE is classifying the issue as CWE-833. The product contains multiple threads or executable segments that are waiting for each other to release a necessary lock, resulting in deadlock. This is going to have an impact on availability. The summary by CVE is:

Linux kernel 2.6.x, when using both NFS and EXT3, allows remote attackers to cause a denial of service (file system panic) via a crafted UDP packet with a V2 lookup procedure that specifies a bad file handle (inode number), which triggers an error and causes an exported directory to be remounted read-only.

The bug was discovered 07/17/2006. The weakness was disclosed 08/07/2006 by James McKenzie (Website). It is possible to read the advisory at lkml.org. This vulnerability is uniquely identified as CVE-2006-3468 since 07/10/2006. Access to the local network is required for this attack. No form of authentication is needed for exploitation. Technical details are unknown but a public exploit is available.

The exploit is shared for download at securityfocus.com. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 4 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 27290 (openSUSE 10 Security Update : kernel (kernel-2099)), 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 156246 (Oracle Enterprise Linux Update for Kernel (ELSA-2006:0617, ELSA-2006:0689)).

Applying a patch is able to eliminate this problem. The bugfix is ready for download at lkml.org. A possible mitigation has been published 2 months after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (28096), Exploit-DB (28358), Tenable (27290), SecurityFocus (BID 19396†) and OSVDB (27812†). The entries VDB-2256, VDB-2254, VDB-2255 and VDB-2257 are pretty similar. 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: 6.5
VulDB Meta Temp Score: 5.9

VulDB Base Score: 6.5
VulDB Temp Score: 5.9
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Deadlock
CWE: CWE-833 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 27290
Nessus Name: openSUSE 10 Security Update : kernel (kernel-2099)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Nessus Port: 🔍

OpenVAS ID: 57408
OpenVAS Name: Debian Security Advisory DSA 1184-1 (kernel-source-2.6.8)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Disable
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Patch: lkml.org

Timelineinfo

07/10/2006 🔍
07/17/2006 +7 days 🔍
07/17/2006 +0 days 🔍
07/21/2006 +4 days 🔍
08/07/2006 +17 days 🔍
08/07/2006 +0 days 🔍
08/07/2006 +0 days 🔍
08/08/2006 +0 days 🔍
09/04/2006 +27 days 🔍
09/19/2006 +15 days 🔍
09/29/2006 +10 days 🔍
10/17/2007 +383 days 🔍
01/21/2025 +6306 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: lkml.org
Researcher: James McKenzie
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2006-3468 (🔍)
GCVE (CVE): GCVE-0-2006-3468
GCVE (VulDB): GCVE-100-2427

OVAL: 🔍

X-Force: 28096
SecurityFocus: 19396 - Linux Kernel NFS and EXT3 Combination Remote Denial of Service Vulnerability
Secunia: 22148 - SUSE update for kernel, Less Critical
OSVDB: 27812 - Linux Kernel NFS/EXT3 Invalid Inode Number Remote DoS
Vulnerability Center: 12615 - Linux Kernel Denial of Service via UDP Packet with Bad File Handle, Medium

scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍

Entryinfo

Created: 08/08/2006 11:29
Updated: 01/21/2025 09:32
Changes: 08/08/2006 11:29 (99), 06/24/2019 17:39 (2), 01/21/2025 09:32 (23)
Complete: 🔍
Cache ID: 216:D1F:103

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