CVE-2011-2189

Publication date 10 October 2011

Last updated 24 July 2024

Ubuntu priority

Cvss 3 Severity Score

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.

Status

Show unmaintained releases

No maintained releases are affected by this CVE.

Package	Ubuntu Release	Status
vsftpd	11.10 oneiric	Fixed 2.3.2-3ubuntu5.1
	11.04 natty	Fixed 2.3.2-3ubuntu4.1
	10.10 maverick	Fixed 2.3.0~pre2-4ubuntu2.3
	10.04 LTS lucid	Fixed 2.2.2-3ubuntu6.3
	8.04 LTS hardy	Ignored end of life

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
vsftpd	Vendor: http://www.debian.org/security/2011/dsa-2305

Severity score breakdown

Parameter	Value
Base score	7.5 · High
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	None
Integrity impact	None
Availability impact	High
Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVE-2011-2189

Cvss 3 Severity Score

Status

Patch details

Severity score breakdown

References

Related Ubuntu Security Notices (USN)

Other references