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RedhatCVE-2011-2189

HistoryOct 10, 2011 - 10:55 a.m.

CVE-2011-2189

2011-10-1010:55:05

CWE-400

redhat

web.nvd.nist.gov

In Wild

linux

kernel

net_namespace.c

vulnerability

cve-2011-2189

denial of service

memory consumption

vsftpd

CVSS2

7.8

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

COMPLETE

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

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

AI Score

Confidence

High

EPSS

0.025

Percentile

90.2%

JSON

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.

Affected configurations

Nvd

Node

linuxlinux_kernelRange≤2.6.32

Node

redhatenterprise_linuxMatch6.0

redhatenterprise_mrgMatch2.0

Node

canonicalubuntu_linuxMatch10.04

canonicalubuntu_linuxMatch10.10

canonicalubuntu_linuxMatch11.04

canonicalubuntu_linuxMatch11.10

Node

debiandebian_linuxMatch5.0

debiandebian_linuxMatch6.0

debiandebian_linuxMatch7.0

VendorProductVersionCPE
linuxlinux_kernelcpe:/o:linux:linux_kernel::::

Vendor	Product	Version	CPE
linux	linux_kernel		cpe:/o:linux:linux_kernel::::

References

bugs.debian.org/cgi-bin/bugreport.cgi?bug=629373

git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=2b035b39970740722598f7a9d548835f9bdd730f

git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=f875bae065334907796da12523f9df85c89f5712

ie.archive.ubuntu.com/linux/kernel/v2.6/ChangeLog-2.6.33

kerneltrap.org/mailarchive/git-commits-head/2009/12/8/15289

neil.brown.name/git?p=linux-2.6%3Ba=patch%3Bh=2b035b39970740722598f7a9d548835f9bdd730f

patchwork.ozlabs.org/patch/88217/

www.debian.org/security/2011/dsa-2305

www.openwall.com/lists/oss-security/2011/06/06/10

www.openwall.com/lists/oss-security/2011/06/06/20

www.ubuntu.com/usn/USN-1288-1

bugs.launchpad.net/ubuntu/+source/linux/+bug/720095

bugzilla.redhat.com/show_bug.cgi?id=711134

bugzilla.redhat.com/show_bug.cgi?id=711245

Social References

CVSS2

7.8

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

COMPLETE

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

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

AI Score

Confidence

High

EPSS

0.025

Percentile

90.2%

JSON

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