CVE-2011-2189

Linux Kernel 2.6.35 - Network Namespace Remote Denial of Service

Severity Score

7.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

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.

net / core / net_namespace.c en el kernel de Linux v2.6.32 y anteriores no maneja adecuadamente una alta tasa de creación y limpieza de los espacios de nombres de red, lo cual lo hace más fácil para los atacantes remotos provocar una denegación de servicio (consumo de memoria) a través de peticiones a un demonio que requiere un espacio de nombres separados por conexión, como se demuestra por vsftpd.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2011-05-31 CVE Reserved
2011-09-19 CVE Published
2011-12-06 First Exploit
2023-10-29 EPSS Updated
2024-08-06 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-400: Uncontrolled Resource Consumption

CAPEC

References (15)

URL	Tag	Source
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=2b035b39970740722598f7a9d548835f9bdd730f	X_refsource_confirm
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=f875bae065334907796da12523f9df85c89f5712	X_refsource_confirm
http://ie.archive.ubuntu.com/linux/kernel/v2.6/ChangeLog-2.6.33	Broken Link
http://kerneltrap.org/mailarchive/git-commits-head/2009/12/8/15289	Broken Link
http://neil.brown.name/git?p=linux-2.6%3Ba=patch%3Bh=2b035b39970740722598f7a9d548835f9bdd730f	X_refsource_confirm
http://www.openwall.com/lists/oss-security/2011/06/06/10	Mailing List
http://www.openwall.com/lists/oss-security/2011/06/06/20	Mailing List

URL	Date	SRC
https://www.exploit-db.com/exploits/36425	2011-12-06
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=629373	2024-08-06
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/720095	2024-08-06
https://bugzilla.redhat.com/show_bug.cgi?id=711134	2024-08-06
https://bugzilla.redhat.com/show_bug.cgi?id=711245	2024-08-06

URL	Date	SRC
http://patchwork.ozlabs.org/patch/88217	2023-02-13

URL	Date	SRC
http://www.debian.org/security/2011/dsa-2305	2023-02-13
http://www.ubuntu.com/usn/USN-1288-1	2023-02-13

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				<= 2.6.32 Search vendor "Linux" for product "Linux Kernel" and version " <= 2.6.32"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Search vendor "Redhat" for product "Enterprise Linux"				6.0 Search vendor "Redhat" for product "Enterprise Linux" and version "6.0"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Mrg Search vendor "Redhat" for product "Enterprise Mrg"				2.0 Search vendor "Redhat" for product "Enterprise Mrg" and version "2.0"		-		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				10.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "10.04"		-		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				10.10 Search vendor "Canonical" for product "Ubuntu Linux" and version "10.10"		-		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				11.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "11.04"		-		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				11.10 Search vendor "Canonical" for product "Ubuntu Linux" and version "11.10"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				5.0 Search vendor "Debian" for product "Debian Linux" and version "5.0"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				6.0 Search vendor "Debian" for product "Debian Linux" and version "6.0"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				7.0 Search vendor "Debian" for product "Debian Linux" and version "7.0"		-		Affected