CVE-2011-2189

Public Exploit

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.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 10.57% Top 10%
Vendor Advisory debian.org Vendor Advisory ubuntu.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://bugzilla.redhat.com/show_bug.cgi?id=711245 patch exploit third party advisory issue tracking
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/720095 third party advisory exploit
http://neil.brown.name/git?p=linux-2.6%3Ba=patch%3Bh=2b035b39970740722598f7a9d548835f9bdd730f
http://www.openwall.com/lists/oss-security/2011/06/06/20 third party advisory mailing list
http://www.openwall.com/lists/oss-security/2011/06/06/10 third party advisory mailing list
http://ie.archive.ubuntu.com/linux/kernel/v2.6/ChangeLog-2.6.33 broken link
http://www.debian.org/security/2011/dsa-2305 third party advisory vendor advisory
http://patchwork.ozlabs.org/patch/88217/ patch mailing list third party advisory
http://kerneltrap.org/mailarchive/git-commits-head/2009/12/8/15289 broken link mailing list
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=629373 mailing list third party advisory exploit
http://www.ubuntu.com/usn/USN-1288-1 third party advisory vendor advisory
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
https://bugzilla.redhat.com/show_bug.cgi?id=711134 third party advisory issue tracking exploit

Frequently Asked Questions

What is the severity of CVE-2011-2189?
CVE-2011-2189 has been scored as a high severity vulnerability.
How to fix CVE-2011-2189?
To fix CVE-2011-2189, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2011-2189 being actively exploited in the wild?
It is possible that CVE-2011-2189 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~11% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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