High severity · published Oct 10, 2011
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…
7.5
CVSS
17.9%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)17.9% · higher than 97% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
KE
Kernel · Linux
through 2.6.32 · source: NVD
DL
Debian Linux · Debian
5.0; 6.0; 7.0 · source: NVD
EL
Enterprise Linux · Redhat
6.0 · source: NVD
EM
Enterprise Mrg · Redhat
2.0 · source: NVD
UL
Ubuntu Linux · Canonical
10.04; 10.10; 11.04; 11.10 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2011-2189
CVE.org
https://www.cve.org/CVERecord?id=CVE-2011-2189
Exploit
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=629373
git.kernel.org
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=2b035b39970740722598f7a9d548835f9bdd730f
git.kernel.org
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=f875bae065334907796da12523f9df85c89f5712
Broken Link
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
neil.brown.name
http://neil.brown.name/git?p=linux-2.6%3Ba=patch%3Bh=2b035b39970740722598f7a9d548835f9bdd730f
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