National Cyber Awareness System

Vulnerability Summary for CVE-2011-3188

Overview

The (1) IPv4 and (2) IPv6 implementations in the Linux kernel before 3.1 use a modified MD4 algorithm to generate sequence numbers and Fragment Identification values, which makes it easier for remote attackers to cause a denial of service (disrupted networking) or hijack network sessions by predicting these values and sending crafted packets.

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/bc0b96b54a21246e377122d54569eef71cec535f

Hyperlink:https://github.com/torvalds/linux/commit/bc0b96b54a21246e377122d54569eef71cec535f

External Source: CONFIRM

Name: https://github.com/torvalds/linux/commit/6e5714eaf77d79ae1c8b47e3e040ff5411b717ec

Hyperlink:https://github.com/torvalds/linux/commit/6e5714eaf77d79ae1c8b47e3e040ff5411b717ec

External Source: CONFIRM

Name: https://bugzilla.redhat.com/show_bug.cgi?id=732658

Hyperlink:https://bugzilla.redhat.com/show_bug.cgi?id=732658

External Source: MLIST

Name: [oss-security] 20110823 Re: CVE request: kernel: change in how tcp seq numbers are generated

Hyperlink:http://www.openwall.com/lists/oss-security/2011/08/23/2

External Source: CONFIRM

Name: http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.1

Hyperlink:http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.1

External Source: CONFIRM

Name: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=bc0b96b54a21246e377122d54569eef71cec535f

Hyperlink:http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=bc0b96b54a21246e377122d54569eef71cec535f

External Source: CONFIRM

Name: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=6e5714eaf77d79ae1c8b47e3e040ff5411b717ec

Hyperlink:http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=6e5714eaf77d79ae1c8b47e3e040ff5411b717ec