National Cyber Awareness System

Vulnerability Summary for CVE-2012-2127

Overview

fs/proc/root.c in the procfs implementation in the Linux kernel before 3.2 does not properly interact with CLONE_NEWPID clone system calls, which allows remote attackers to cause a denial of service (reference leak and memory consumption) by making many connections to a daemon that uses PID namespaces to isolate clients, as demonstrated by vsftpd.

Impact

CVSS Severity (version 2.0):

CVSS Version 2 Metrics:

References to Advisories, Solutions, and Tools

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External Source: CONFIRM

Name: https://github.com/torvalds/linux/commit/905ad269c55fc62bee3da29f7b1d1efeba8aa1e1

Type: Patch Information; Exploit

Hyperlink:https://github.com/torvalds/linux/commit/905ad269c55fc62bee3da29f7b1d1efeba8aa1e1

External Source: CONFIRM

Name: http://www.kernel.org/pub/linux/kernel/v3.x/patch-3.2.bz2

Type: Patch Information

Hyperlink:http://www.kernel.org/pub/linux/kernel/v3.x/patch-3.2.bz2

External Source: CONFIRM

Name: https://bugzilla.redhat.com/show_bug.cgi?id=815188

Hyperlink:https://bugzilla.redhat.com/show_bug.cgi?id=815188

External Source: CONFIRM

Name: https://bugzilla.novell.com/show_bug.cgi?id=757783

Hyperlink:https://bugzilla.novell.com/show_bug.cgi?id=757783

External Source: UBUNTU

Name: USN-1594-1

Hyperlink:http://www.ubuntu.com/usn/USN-1594-1

External Source: BID

Name: 55774

Hyperlink:http://www.securityfocus.com/bid/55774

External Source: MLIST

Name: [oss-security] 20120422 Re: Re: CVE request: pid namespace leak in kernel 3.0 and 3.1

Hyperlink:http://www.openwall.com/lists/oss-security/2012/04/22/1

External Source: MLIST

Name: [oss-security] 20120420 Re: CVE request: pid namespace leak in kernel 3.0 and 3.1

Hyperlink:http://www.openwall.com/lists/oss-security/2012/04/20/25

External Source: CONFIRM

Name: http://www.kernel.org/pub/linux/kernel/v3.x/

Hyperlink:http://www.kernel.org/pub/linux/kernel/v3.x/

External Source: UBUNTU

Name: USN-1607-1

Hyperlink:http://ubuntu.com/usn/usn-1607-1

External Source: CONFIRM

Name: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=905ad269c55fc62bee3da29f7b1d1efeba8aa1e1

Hyperlink:http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=905ad269c55fc62bee3da29f7b1d1efeba8aa1e1