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 remote attackers to cause a denial of service (memory consumption) via requests…
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 17.9%, higher than 97% of all known CVEs. Patch or mitigate before the next change window.
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 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 17.85% probability · 97th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-400
- Affected
- linux/linux kernel · redhat/enterprise linux · redhat/enterprise mrg · canonical/ubuntu linux · debian/debian linux
- Source
- secalert@redhat.com
References
- http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=629373Exploit, Mailing List, Third Party 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
- 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=2b035b39970740722598f7a9d548835f9bdd730f
- http://patchwork.ozlabs.org/patch/88217/Mailing List, Patch, Third Party Advisory
- http://www.debian.org/security/2011/dsa-2305Third Party Advisory
- http://www.openwall.com/lists/oss-security/2011/06/06/10Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2011/06/06/20Mailing List, Third Party Advisory
- http://www.ubuntu.com/usn/USN-1288-1Third Party Advisory
- https://bugs.launchpad.net/ubuntu/+source/linux/+bug/720095Exploit, Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=711134Exploit, Issue Tracking, Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=711245Exploit, Issue Tracking, Patch, Third Party Advisory
- http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=629373Exploit, Mailing List, Third Party 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
- 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=2b035b39970740722598f7a9d548835f9bdd730f
- http://patchwork.ozlabs.org/patch/88217/Mailing List, Patch, Third Party Advisory
- http://www.debian.org/security/2011/dsa-2305Third Party Advisory
- http://www.openwall.com/lists/oss-security/2011/06/06/10Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2011/06/06/20Mailing List, Third Party Advisory
- http://www.ubuntu.com/usn/USN-1288-1Third Party Advisory
- https://bugs.launchpad.net/ubuntu/+source/linux/+bug/720095Exploit, Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=711134Exploit, Issue Tracking, Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=711245Exploit, Issue Tracking, Patch, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.