Vulnerability 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 Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | <= 2.6.32 |
| Redhat | Enterprise Linux | 6.0 |
| Redhat | Enterprise Mrg | 2.0 |
| Canonical | Ubuntu Linux | 10.04 |
| Debian | Debian Linux | 5.0 |
Related Weaknesses (CWE)
References
- http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=629373ExploitMailing ListThird Party Advisory
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=
- http://ie.archive.ubuntu.com/linux/kernel/v2.6/ChangeLog-2.6.33Broken Link
- http://kerneltrap.org/mailarchive/git-commits-head/2009/12/8/15289Broken Link
- http://neil.brown.name/git?p=linux-2.6%3Ba=patch%3Bh=2b035b39970740722598f7a9d54
- http://patchwork.ozlabs.org/patch/88217/Mailing ListPatchThird Party Advisory
- http://www.debian.org/security/2011/dsa-2305Third Party Advisory
- http://www.openwall.com/lists/oss-security/2011/06/06/10Mailing ListThird Party Advisory
- http://www.openwall.com/lists/oss-security/2011/06/06/20Mailing ListThird Party Advisory
- http://www.ubuntu.com/usn/USN-1288-1Third Party Advisory
- https://bugs.launchpad.net/ubuntu/+source/linux/+bug/720095ExploitThird Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=711134ExploitIssue TrackingThird Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=711245ExploitIssue TrackingPatch
- http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=629373ExploitMailing ListThird Party Advisory
FAQ
What is CVE-2011-2189?
CVE-2011-2189 is a vulnerability with a CVSS score of 7.5 (HIGH). 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 ...
How severe is CVE-2011-2189?
CVE-2011-2189 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2011-2189?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel, Redhat Enterprise Linux, Redhat Enterprise Mrg, Canonical Ubuntu Linux, Debian Debian Linux.