Linux Kernel up to 2.6.16 Netfilter do_replace numeric error

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	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.
5.3	$0-$5k	0.00

Summaryinfo

A vulnerability described as critical has been identified in Linux Kernel up to 2.6.16. This affects the function do_replace of the component Netfilter. Executing a manipulation can lead to numeric error. This vulnerability appears as CVE-2006-0038. There is no available exploit. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability classified as critical was found in Linux Kernel up to 2.6.16 (Operating System). This vulnerability affects the function do_replace of the component Netfilter. The manipulation with an unknown input leads to a numeric error vulnerability. The CWE definition for the vulnerability is CWE-189. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

Integer overflow in the do_replace function in netfilter for Linux before 2.6.16-rc3, when using "virtualization solutions" such as OpenVZ, allows local users with CAP_NET_ADMIN rights to cause a buffer overflow in the copy_from_user function.

The weakness was presented 03/22/2006 by Solar Designer (Website). The advisory is available at kernel.org. This vulnerability was named CVE-2006-0038 since 12/20/2005. Local access is required to approach this attack. No form of authentication is required for a successful exploitation. Technical details are known, but there is no available exploit.

It is declared as proof-of-concept. As 0-day the estimated underground price was around $25k-$100k. The vulnerability scanner Nessus provides a plugin with the ID 22639 (Debian DSA-1097-1 : kernel-source-2.4.27 - several vulnerabilities), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 115389 (Linux Kernel Unspecified Socket Buffer Handling Remote Denial of Service Vulnerability).

Upgrading eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at kernel.org. The best possible mitigation is suggested to be upgrading to the latest version. A possible mitigation has been published 3 months after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (25400), Tenable (22639), SecurityFocus (BID 17178†), OSVDB (24040†) and Secunia (SA20716†). See VDB-2099, VDB-2177, VDB-30129 and VDB-29314 for similar entries. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

• Operating System

Vendor

• Linux

Name

• Kernel

Version

• 2.6.0
• 2.6.1
• 2.6.2
• 2.6.3
• 2.6.4
• 2.6.5
• 2.6.6
• 2.6.7
• 2.6.8
• 2.6.9
• 2.6.10
• 2.6.11
• 2.6.12
• 2.6.13
• 2.6.14
• 2.6.15
• 2.6.16

License

• open-source

Website

• Vendor: https://www.kernel.org/

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.9
VulDB Meta Temp Score: 5.3

VulDB Base Score: 5.9
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Numeric error
CWE: CWE-189
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Proof-of-Concept

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Nessus ID: 22639
Nessus Name: Debian DSA-1097-1 : kernel-source-2.4.27 - several vulnerabilities
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Nessus Port: 🔍

OpenVAS ID: 56956
OpenVAS Name: Debian Security Advisory DSA 1097-1 (kernel-source-2.4.27)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Patch: kernel.org

Timelineinfo

12/20/2005 🔍
03/21/2006 +91 days 🔍
03/22/2006 +1 days 🔍
03/22/2006 +0 days 🔍
03/22/2006 +0 days 🔍
03/23/2006 +0 days 🔍
06/14/2006 +83 days 🔍
06/19/2006 +5 days 🔍
10/14/2006 +117 days 🔍
06/21/2025 +6825 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: kernel.org
Researcher: Solar Designer
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2006-0038 (🔍)
GCVE (CVE): GCVE-0-2006-0038
GCVE (VulDB): GCVE-100-2098

OVAL: 🔍

X-Force: 25400 - Linux kernel netfilter do_replace integer overflow, High Risk
SecurityFocus: 17178 - Linux Kernel Netfilter Do_Replace Local Buffer Overflow Vulnerability
Secunia: 20716 - Ubuntu update for kernel, Moderately Critical
OSVDB: 24040 - Linux Kernel Netfilter do_replace() Function Local Overflow
Vupen: ADV-2006-1046

See also: 🔍

Entryinfo

Created: 03/23/2006 14:15
Updated: 06/21/2025 22:17
Changes: 03/23/2006 14:15 (92), 06/21/2025 22:17 (20)
Complete: 🔍
Cache ID: 216:7FF:103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Discussion

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