CVE-2011-1585

Published: 6 October 2011

The cifs_find_smb_ses function in fs/cifs/connect.c in the Linux kernel before 2.6.36 does not properly determine the associations between users and sessions, which allows local users to bypass CIFS share authentication by leveraging a mount of a share by a different user.

From the Ubuntu Security Team

It was discovered that CIFS incorrectly handled authentication. When a user had a CIFS share mounted that required authentication, a local user could mount the same share without knowing the correct password.

Priority

Status

Package	Release	Status
linux Launchpad, Ubuntu, Debian	hardy	Released (2.6.24-30.96)
	lucid	Released (2.6.32-34.73)
	maverick	Released (2.6.35-31.62)
	natty	Not vulnerable (2.6.37-2.9)
	oneiric	Not vulnerable (2.6.39-0.0)
	precise	Not vulnerable (3.1.0-1.1)
	upstream	Released (2.6.36~rc3)
	Patches: Introduced by 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Fixed by 4ff67b720c02c36e54d55b88c2931879b7db1cd2 Introduced by 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Fixed by fc87a40677bbe0937e2ff0642c7e83c9a4813f3d Introduced by 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Fixed by 24e6cf92fde1f140d8eb0bf7cd24c2c78149b6b2
linux-armadaxp Launchpad, Ubuntu, Debian	hardy	Does not exist
	lucid	Does not exist
	natty	Does not exist
	oneiric	Does not exist
	precise	Not vulnerable (3.2.0-1600.1)
	upstream	Released (2.6.36~rc3)
linux-ec2 Launchpad, Ubuntu, Debian	hardy	Does not exist
	lucid	Released (2.6.32-318.37)
	maverick	Ignored (binary supplied by "linux" now)
	natty	Does not exist
	oneiric	Does not exist
	precise	Does not exist
	upstream	Released (2.6.36~rc3)
linux-fsl-imx51 Launchpad, Ubuntu, Debian	hardy	Does not exist
	lucid	Released (2.6.31-612.30)
	maverick	Does not exist
	natty	Does not exist
	oneiric	Does not exist
	precise	Does not exist
	upstream	Released (2.6.36~rc3)
linux-lts-backport-maverick Launchpad, Ubuntu, Debian	hardy	Does not exist
	lucid	Released (2.6.35-31.62~lucid1)
	maverick	Does not exist
	natty	Does not exist
	oneiric	Does not exist
	precise	Does not exist
	upstream	Released (2.6.36~rc3)
linux-lts-backport-natty Launchpad, Ubuntu, Debian	hardy	Does not exist
	lucid	Released (2.6.38-1.27~lucid1)
	maverick	Does not exist
	natty	Does not exist
	oneiric	Does not exist
	precise	Does not exist
	upstream	Released (2.6.36~rc3)
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
	precise	Does not exist
	upstream	Released (2.6.36~rc3)
linux-mvl-dove Launchpad, Ubuntu, Debian	hardy	Does not exist
	lucid	Released (2.6.32-218.35)
	maverick	Released (2.6.32-418.35)
	natty	Does not exist
	oneiric	Does not exist
	precise	Does not exist
	upstream	Released (2.6.36~rc3)
linux-ti-omap4 Launchpad, Ubuntu, Debian	hardy	Does not exist
	lucid	Does not exist
	maverick	Released (2.6.35-903.27)
	natty	Not vulnerable (2.6.38-1201.2)
	oneiric	Not vulnerable (2.6.38-1309.13)
	precise	Not vulnerable (3.0.0-1401.2)
	upstream	Released (2.6.36~rc3)

References

Bugs

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