CVE-2011-2699

Published: 16 August 2011

The IPv6 implementation in the Linux kernel before 3.1 does not generate Fragment Identification values separately for each destination, which makes it easier for remote attackers to cause a denial of service (disrupted networking) by predicting these values and sending crafted packets.

From the Ubuntu Security Team

Fernando Gont discovered that the IPv6 stack used predictable fragment identification numbers. A remote attacker could exploit this to exhaust network resources, leading to a denial of service.

Priority

CVSS 3 base score: 7.5

Status

Package	Release	Status
linux Launchpad, Ubuntu, Debian	hardy	Released (2.6.24-29.94)
	lucid	Released (2.6.32-35.78)
	maverick	Released (2.6.35-30.60)
	natty	Released (2.6.38-11.49)
	oneiric	Not vulnerable (3.0.0-9.12)
	upstream	Released (3.1~rc1)
	Patches: Introduced by 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Fixed by 87c48fa3b4630905f98268dde838ee43626a060c
linux-ec2 Launchpad, Ubuntu, Debian	hardy	Does not exist
	lucid	Released (2.6.32-319.39)
	maverick	Ignored (binary supplied by "linux" now)
	natty	Does not exist
	oneiric	Does not exist
	upstream	Released (3.1~rc1)
linux-fsl-imx51 Launchpad, Ubuntu, Debian	hardy	Does not exist
	lucid	Released (2.6.31-610.28)
	maverick	Does not exist
	natty	Does not exist
	oneiric	Does not exist
	upstream	Released (3.1~rc1)
linux-lts-backport-maverick Launchpad, Ubuntu, Debian	hardy	Does not exist
	lucid	Released (2.6.35-30.60~lucid1)
	maverick	Does not exist
	natty	Does not exist
	oneiric	Does not exist
	upstream	Released (3.1~rc1)
linux-lts-backport-natty Launchpad, Ubuntu, Debian	hardy	Does not exist
	lucid	Released (2.6.38-11.49~lucid1)
	maverick	Does not exist
	natty	Does not exist
	oneiric	Does not exist
	upstream	Released (3.1~rc1)
linux-lts-backport-oneiric Launchpad, Ubuntu, Debian	hardy	Does not exist
	lucid	Not vulnerable
	maverick	Does not exist
	natty	Does not exist
	oneiric	Does not exist
	upstream	Released (3.1~rc1)
linux-mvl-dove Launchpad, Ubuntu, Debian	hardy	Does not exist
	lucid	Released (2.6.32-219.37)
	maverick	Released (2.6.32-419.37)
	natty	Does not exist
	oneiric	Does not exist
	upstream	Released (3.1~rc1)
linux-ti-omap4 Launchpad, Ubuntu, Debian	hardy	Does not exist
	lucid	Does not exist
	maverick	Released (2.6.35-903.24)
	natty	Released (2.6.38-1209.15)
	oneiric	Not vulnerable (3.0.0-1204.9)
	upstream	Released (3.1~rc1)

References

Bugs

https://launchpad.net/bugs/827685

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