CVE-2011-2189 Information

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 Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Reference

http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=629373 http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=2b035b39970740722598f7a9d548835f9bdd730f http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=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;a=patch;h=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

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

7.5