Linux Kernel 2.6.16.9 resource management

CVSS Meta Temp Score
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CTI Interest Score
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7.1$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic has been found in Linux Kernel 2.6.16.9. Affected is an unknown function. This manipulation causes resource management. This vulnerability is handled as CVE-2011-2189. Additionally, an exploit exists.

Detailsinfo

A vulnerability has been found in Linux Kernel 2.6.16.9 (Operating System) and classified as critical. Affected by this vulnerability is some unknown processing. The manipulation with an unknown input leads to a resource management vulnerability. The CWE definition for the vulnerability is CWE-399. As an impact it is known to affect availability. The summary by CVE is:

net/core/net_namespace.c in the Linux kernel 2.6.32 and earlier does not properly handle a high rate of creation and cleanup of network namespaces, which makes it easier for remote attackers to cause a denial of service (memory consumption) via requests to a daemon that requires a separate namespace per connection, as demonstrated by vsftpd.

The issue has been introduced in 03/20/2006. The weakness was released 10/10/2011 as Bug 711245 as not defined bug report (Bugzilla). The advisory is shared at bugzilla.redhat.com. This vulnerability is known as CVE-2011-2189. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details are unknown but a public exploit is available.

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 2030 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 57038 (Ubuntu 10.04 LTS / 10.10 / 11.04 / 11.10 : vsftpd vulnerability (USN-1288-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Ubuntu Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 195189 (Ubuntu Security Notification for Vsftpd Vulnerability (USN-1288-1)).

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 (70523), Exploit-DB (36425), Tenable (57038), SecurityFocus (BID 50938†) and Vulnerability Center (SBV-33992†). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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: 7.1

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

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Resource management
CWE: CWE-399 / 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: 57038
Nessus Name: Ubuntu 10.04 LTS / 10.10 / 11.04 / 11.10 : vsftpd vulnerability (USN-1288-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 70399
OpenVAS Name: Debian Security Advisory DSA 2305-1 (vsftpd)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Patch: 2b035b39970740722598f7a9d548835f9bdd730f

Timelineinfo

03/20/2006 🔍
05/31/2011 +1897 days 🔍
10/10/2011 +132 days 🔍
10/10/2011 +0 days 🔍
10/10/2011 +0 days 🔍
12/06/2011 +57 days 🔍
12/07/2011 +1 days 🔍
12/08/2011 +1 days 🔍
03/23/2015 +1201 days 🔍
01/12/2025 +3583 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: Bug 711245
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2011-2189 (🔍)
GCVE (CVE): GCVE-0-2011-2189
GCVE (VulDB): GCVE-100-58981

OVAL: 🔍

X-Force: 70523
SecurityFocus: 50938 - Linux Kernel CVE-2011-2189 Network Namespace Remote Denial of Service Vulnerability
Vulnerability Center: 33992 - Linux kernel 2.6.32 and earlier \x27net/core/net_namespace.c\x27 Remote DoS Vulnerability, High

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

Entryinfo

Created: 03/23/2015 16:50
Updated: 01/12/2025 18:44
Changes: 03/23/2015 16:50 (62), 04/05/2017 15:04 (9), 11/23/2021 12:49 (6), 11/23/2021 12:57 (9), 11/23/2021 13:04 (1), 08/16/2024 09:40 (23), 01/12/2025 18:44 (6)
Complete: 🔍
Cache ID: 216::103

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