CVE-2011-2189

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Summary

CVECVE-2011-2189
StatePUBLISHED
Assignerredhat
Source PriorityCVE Program / NVD first with legacy fallback
Published2011-10-10 10:55:05 UTC
Updated2026-04-29 01:13:23 UTC
Descriptionnet/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.

Risk And Classification

Primary CVSS: v3.1 7.5 HIGH from [email protected]

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Problem Types: CWE-400 | n/a

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
2.0[email protected]Primary7.8AV:N/AC:L/Au:N/C:N/I:N/A:C

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS v2.0 Breakdown

Access Vector
Network
Access Complexity
Low
Authentication
None
Confidentiality
None
Integrity
None
Availability
Complete

AV:N/AC:L/Au:N/C:N/I:N/A:C

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Canonical Ubuntu Linux 10.04 All All All
Operating System Canonical Ubuntu Linux 10.10 All All All
Operating System Canonical Ubuntu Linux 11.04 All All All
Operating System Canonical Ubuntu Linux 11.10 All All All
Operating System Debian Debian Linux 5.0 All All All
Operating System Debian Debian Linux 6.0 All All All
Operating System Debian Debian Linux 7.0 All All All
Operating System Linux Linux Kernel All All All All
Operating System Redhat Enterprise Linux 6.0 All All All
Operating System Redhat Enterprise Mrg 2.0 All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na N/a affected n/a Not specified

References

ReferenceSourceLinkTags
Bug 711245 – CVE-2011-2189 kernel: net_ns: oom killer fires because of slow net_ns cleanup af854a3a-2127-422b-91ae-364da2661108 bugzilla.redhat.com Exploit, Issue Tracking, Patch, Third Party Advisory
Bug 711134 – vsftpd: Do not create network namespace per connection af854a3a-2127-422b-91ae-364da2661108 bugzilla.redhat.com Exploit, Issue Tracking, Third Party Advisory
oss-security - Re: CVE Request -- vsftpd -- Do not create network namespace per connection af854a3a-2127-422b-91ae-364da2661108 www.openwall.com Mailing List, Third Party Advisory
Bug #720095 “vsftpd causes a vmalloc space leak in Lucid” : Bugs : “linux” package : Ubuntu af854a3a-2127-422b-91ae-364da2661108 bugs.launchpad.net Exploit, Third Party Advisory
404 Not Found af854a3a-2127-422b-91ae-364da2661108 ie.archive.ubuntu.com Broken Link
kerneltrap.org/mailarchive/git-commits-head/2009/12/8/15289 af854a3a-2127-422b-91ae-364da2661108 kerneltrap.org Broken Link
[RFC/Review] Prevent network namespace memory exhaution - Patchwork af854a3a-2127-422b-91ae-364da2661108 patchwork.ozlabs.org Mailing List, Patch, Third Party Advisory
USN-1288-1: vsftpd vulnerability | Ubuntu af854a3a-2127-422b-91ae-364da2661108 www.ubuntu.com Third Party Advisory
kernel/git/torvalds/linux.git - Linux kernel source tree af854a3a-2127-422b-91ae-364da2661108 git.kernel.org
oss-security - Re: CVE Request -- vsftpd -- Do not create network namespace per connection af854a3a-2127-422b-91ae-364da2661108 www.openwall.com Mailing List, Third Party Advisory
kernel/git/torvalds/linux.git - Linux kernel source tree af854a3a-2127-422b-91ae-364da2661108 git.kernel.org
git.neil.brown.name Git af854a3a-2127-422b-91ae-364da2661108 neil.brown.name
#629373 - Remote DoS with vsftpd on Linux 2.6.32 - Debian Bug report logs af854a3a-2127-422b-91ae-364da2661108 bugs.debian.org Exploit, Mailing List, Third Party Advisory
Debian -- Security Information -- DSA-2305-1 vsftpd af854a3a-2127-422b-91ae-364da2661108 www.debian.org Third Party Advisory
kernel/git/torvalds/linux.git - Linux kernel source tree MITRE git.kernel.org
kernel/git/torvalds/linux.git - Linux kernel source tree MITRE git.kernel.org
git.neil.brown.name Git MITRE neil.brown.name
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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