Vulnerability Details : CVE-2011-2189
Potential exploit
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.
Vulnerability category: Denial of service
Products affected by CVE-2011-2189
- cpe:2.3:o:debian:debian_linux:6.0:*:*:*:*:*:*:*
- cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*
- cpe:2.3:o:debian:debian_linux:5.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_mrg:2.0:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:10.10:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:11.04:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:11.10:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:10.04:*:*:*:*:*:*:*
Threat overview for CVE-2011-2189
Top countries where our scanners detected CVE-2011-2189
Top open port discovered on systems with this issue
53
IPs affected by CVE-2011-2189 6,924
Threat actors abusing to this issue?
Yes
Find out if you* are
affected by CVE-2011-2189!
*Directly or indirectly through your vendors, service providers and 3rd parties.
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attack surface intelligence
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Exploit prediction scoring system (EPSS) score for CVE-2011-2189
1.94%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 88 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2011-2189
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
7.8
|
HIGH | AV:N/AC:L/Au:N/C:N/I:N/A:C |
10.0
|
6.9
|
NIST | |
7.5
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
3.9
|
3.6
|
NIST |
CWE ids for CVE-2011-2189
-
The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources.Assigned by: nvd@nist.gov (Primary)
References for CVE-2011-2189
-
http://patchwork.ozlabs.org/patch/88217/
[RFC/Review] Prevent network namespace memory exhaution - PatchworkMailing List;Patch;Third Party Advisory
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http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=2b035b39970740722598f7a9d548835f9bdd730f
-
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=629373
#629373 - Remote DoS with vsftpd on Linux 2.6.32 - Debian Bug report logsExploit;Mailing List;Third Party Advisory
-
https://bugzilla.redhat.com/show_bug.cgi?id=711245
711245 – (CVE-2011-2189) CVE-2011-2189 kernel: net_ns: oom killer fires because of slow net_ns cleanupExploit;Issue Tracking;Patch;Third Party Advisory
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http://neil.brown.name/git?p=linux-2.6%3Ba=patch%3Bh=2b035b39970740722598f7a9d548835f9bdd730f
git.neil.brown.name Git
-
https://bugzilla.redhat.com/show_bug.cgi?id=711134
711134 – vsftpd: Do not create network namespace per connectionExploit;Issue Tracking;Third Party Advisory
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http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=f875bae065334907796da12523f9df85c89f5712
-
http://www.openwall.com/lists/oss-security/2011/06/06/10
oss-security - Re: CVE Request -- vsftpd -- Do not create network namespace per connectionMailing List;Third Party Advisory
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http://www.ubuntu.com/usn/USN-1288-1
USN-1288-1: vsftpd vulnerability | Ubuntu security noticesThird Party Advisory
-
http://www.debian.org/security/2011/dsa-2305
Debian -- Security Information -- DSA-2305-1 vsftpdThird Party Advisory
-
http://www.openwall.com/lists/oss-security/2011/06/06/20
oss-security - Re: CVE Request -- vsftpd -- Do not create network namespace per connectionMailing List;Third Party Advisory
-
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/720095
Bug #720095 “vsftpd causes a vmalloc space leak in Lucid” : Bugs : linux package : UbuntuExploit;Third Party Advisory
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