CVE-2011-3188

Description

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.

9.1

CVSS

Severity: Critical

CVSS 3.1 •

CVSS 2.0 •

EPSS 6.11% Top 10%

Vendor Advisory marc.info Vendor Advisory kernel.org

Affected: n/a n/a

References

Link	Tags
https://github.com/torvalds/linux/commit/bc0b96b54a21246e377122d54569eef71cec535f	third party advisory patch
http://www.openwall.com/lists/oss-security/2011/08/23/2	mailing list third party advisory patch
https://github.com/torvalds/linux/commit/6e5714eaf77d79ae1c8b47e3e040ff5411b717ec	third party advisory patch
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=6e5714eaf77d79ae1c8b47e3e040ff5411b717ec
https://bugzilla.redhat.com/show_bug.cgi?id=732658	issue tracking third party advisory patch
http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.1	mailing list patch vendor advisory
http://marc.info/?l=bugtraq&m=139447903326211&w=2	mailing list third party advisory vendor advisory
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=bc0b96b54a21246e377122d54569eef71cec535f
https://support.f5.com/csp/article/K15301?utm_source=f5support&%3Butm_medium=RSS

Frequently Asked Questions

What is the severity of CVE-2011-3188?: CVE-2011-3188 has been scored as a critical severity vulnerability.
How to fix CVE-2011-3188?: To fix CVE-2011-3188, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2011-3188 being actively exploited in the wild?: It is possible that CVE-2011-3188 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~6% probability that this vulnerability will be exploited by malicious actors in the next 30 days.

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