CVE-2011-2189
What it is
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.
At a glance
- Exploitability
- Can be exploited over the network without logging in. High risk of service disruption.
- Exploit odds
- 17.9% chance of exploitation in the next 30 days (EPSS). Higher than most.
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 17.9% in the next 30 days (EPSS).
- Severity: 7.5 HIGH (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 17.9% · EPSS, next 30 days
- Weakness
- CWE-400 · Uncontrolled resource consumption
- Record status
- Modified
Affected
- Linux Kernel ≤ 2.6.32
- Redhat Enterprise Linux 6.0
- Redhat Enterprise Mrg 2.0
- Canonical Ubuntu Linux 10.04
- Canonical Ubuntu Linux 10.10
- Canonical Ubuntu Linux 11.04
- Canonical Ubuntu Linux 11.10
- Debian Linux 5.0
Attack profile CVSS 3.1 · 7.5
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Raw vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2011-2189.md and follow it. Check whether this project is affected by CVE-2011-2189. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- http://patchwork.ozlabs.org/patch/88217/
- https://bugzilla.redhat.com/show_bug.cgi?id=711245
- http://patchwork.ozlabs.org/patch/88217/
- https://bugzilla.redhat.com/show_bug.cgi?id=711245
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