Linux Kernel up to 2.6.16.17 snmp_trap_decode denial of service

CVSS Meta Temp Score
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CTI Interest Score
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6.7$0-$5k0.00

Summaryinfo

A vulnerability has been found in Linux Kernel up to 2.6.16.17 and classified as problematic. This affects the function snmp_trap_decode. This manipulation causes denial of service. This vulnerability is tracked as CVE-2006-2444. Moreover, an exploit is present. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Linux Kernel up to 2.6.16.17 (Operating System). It has been declared as critical. Affected by this vulnerability is the function snmp_trap_decode. The manipulation with an unknown input leads to a denial of service vulnerability. The CWE definition for the vulnerability is CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. As an impact it is known to affect availability. The summary by CVE is:

The snmp_trap_decode function in the SNMP NAT helper for Linux kernel before 2.6.16.18 allows remote attackers to cause a denial of service (crash) via unspecified remote attack vectors that cause failures in snmp_trap_decode that trigger (1) frees of random memory or (2) frees of previously-freed memory (double-free) by snmp_trap_decode as well as its calling function, as demonstrated via certain test cases of the PROTOS SNMP test suite.

The bug was discovered 05/22/2006. The weakness was disclosed 05/23/2006 with Kernel Team (Website). The advisory is shared at kernel.org. This vulnerability is known as CVE-2006-2444 since 05/18/2006. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details and also a public exploit are known.

It is possible to download the exploit at exploit-db.com. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 1 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 21598 (Mandrake Linux Security Advisory : kernel (MDKSA-2006:087)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Mandriva 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)).

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 1 days after the disclosure of the vulnerability. Furthermore it is possible to detect and prevent this kind of attack with TippingPoint and the filter 8600.

The vulnerability is also documented in the databases at X-Force (26594), Exploit-DB (1880), Tenable (21598), SecurityFocus (BID 18081†) and OSVDB (25750†). The entries VDB-2256, VDB-2254, VDB-2255 and VDB-2379 are pretty similar. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 6.7

VulDB Base Score: 7.5
VulDB Temp Score: 6.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
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NVD Base Score: 🔍

Exploitinginfo

Class: Denial of service
CWE: CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

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

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EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 21598
Nessus Name: Mandrake Linux Security Advisory : kernel (MDKSA-2006:087)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Nessus Port: 🔍

OpenVAS ID: 57407
OpenVAS Name: Debian Security Advisory DSA 1183-1 (kernel-source-2.4.27)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Patch: kernel.org
TippingPoint: 🔍

McAfee IPS: 🔍
McAfee IPS Version: 🔍

PaloAlto IPS: 🔍
Fortigate IPS: 🔍

Timelineinfo

05/18/2006 🔍
05/20/2006 +2 days 🔍
05/22/2006 +2 days 🔍
05/23/2006 +1 days 🔍
05/23/2006 +0 days 🔍
05/24/2006 +0 days 🔍
05/24/2006 +0 days 🔍
05/25/2006 +1 days 🔍
05/25/2006 +0 days 🔍
05/27/2006 +2 days 🔍
05/30/2006 +3 days 🔍
05/30/2006 +0 days 🔍
01/24/2025 +6814 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: kernel.org
Researcher: http://www.kernel.org
Organization: Kernel Team
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2006-2444 (🔍)
GCVE (CVE): GCVE-0-2006-2444
GCVE (VulDB): GCVE-100-2257

OVAL: 🔍

CERT: 🔍
X-Force: 26594 - Linux kernel SNMP NAT helper snmp_trap_decode() denial of service, Medium Risk
SecurityFocus: 18081 - Linux Kernel SNMP NAT Helper Remote Denial of Service Vulnerability
Secunia: 22822 - SUSE update for kernel, Less Critical
OSVDB: 25750 - Linux Kernel SNMP NAT Helper snmp_trap_decode() Function DoS
SecurityTracker: 1016153
Vulnerability Center: 11697 - Linux Kernel Denial of Service via snmp_trap_decode Function in SNMP NAT Helper, Medium
Vupen: ADV-2006-1916

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

Entryinfo

Created: 05/30/2006 11:23
Updated: 01/24/2025 17:31
Changes: 05/30/2006 11:23 (108), 06/19/2019 16:28 (6), 01/22/2025 14:02 (16), 01/24/2025 17:31 (1)
Complete: 🔍
Cache ID: 216:D1C:103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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