CVE-2011-2189

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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
redhatCNA
---
---
CVEADP
---
---
Base Score
CVSS 3.x
EPSS Score
Percentile: 92%
VendorProductVersion
linuxlinux_kernel
𝑥
≤ 2.6.32
redhatenterprise_linux
6.0
redhatenterprise_mrg
2.0
canonicalubuntu_linux
10.04
canonicalubuntu_linux
10.10
canonicalubuntu_linux
11.04
canonicalubuntu_linux
11.10
debiandebian_linux
5.0
debiandebian_linux
6.0
debiandebian_linux
7.0
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
vsftpd
bullseye
3.0.3-12
fixed
lenny
no-dsa
squeeze
no-dsa
bookworm
3.0.3-13
fixed
sid
3.0.3-13.1
fixed
trixie
3.0.3-13.1
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
vsftpd
oneiric
Fixed 2.3.2-3ubuntu5.1
released
natty
Fixed 2.3.2-3ubuntu4.1
released
maverick
Fixed 2.3.0~pre2-4ubuntu2.3
released
lucid
Fixed 2.2.2-3ubuntu6.3
released
hardy
ignored
Common Weakness Enumeration
References
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=629373
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=2b035b39970740722598f7a9d548835f9bdd730f
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=f875bae065334907796da12523f9df85c89f5712
http://ie.archive.ubuntu.com/linux/kernel/v2.6/ChangeLog-2.6.33
http://kerneltrap.org/mailarchive/git-commits-head/2009/12/8/15289
http://neil.brown.name/git?p=linux-2.6%3Ba=patch%3Bh=2b035b39970740722598f7a9d548835f9bdd730f
http://patchwork.ozlabs.org/patch/88217/
http://www.debian.org/security/2011/dsa-2305
http://www.openwall.com/lists/oss-security/2011/06/06/10
http://www.openwall.com/lists/oss-security/2011/06/06/20
http://www.ubuntu.com/usn/USN-1288-1
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/720095
https://bugzilla.redhat.com/show_bug.cgi?id=711134
https://bugzilla.redhat.com/show_bug.cgi?id=711245
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=629373
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=2b035b39970740722598f7a9d548835f9bdd730f
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=f875bae065334907796da12523f9df85c89f5712
http://ie.archive.ubuntu.com/linux/kernel/v2.6/ChangeLog-2.6.33
http://kerneltrap.org/mailarchive/git-commits-head/2009/12/8/15289
http://neil.brown.name/git?p=linux-2.6%3Ba=patch%3Bh=2b035b39970740722598f7a9d548835f9bdd730f
http://patchwork.ozlabs.org/patch/88217/
http://www.debian.org/security/2011/dsa-2305
http://www.openwall.com/lists/oss-security/2011/06/06/10
http://www.openwall.com/lists/oss-security/2011/06/06/20
http://www.ubuntu.com/usn/USN-1288-1
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/720095
https://bugzilla.redhat.com/show_bug.cgi?id=711134
https://bugzilla.redhat.com/show_bug.cgi?id=711245