Comment 17 for bug 732628

This bug was fixed in the package ecryptfs-utils - 87-0ubuntu1.1

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ecryptfs-utils (87-0ubuntu1.1) natty-security; urgency=low

  * SECURITY UPDATE: privilege escalation via mountpoint race conditions
    (LP: #732628)
    - debian/patches/CVE-2011-1831,1832,1834.patch: chdir into mountpoint
      before checking permissions in src/utils/mount.ecryptfs_private.c.
    - CVE-2011-1831
    - CVE-2011-1832
  * SECURITY UPDATE: race condition when checking source during mount
    (LP: #732628)
    - debian/patches/CVE-2011-1833.patch: use new ecryptfs_check_dev_ruid
      kernel option when mounting directory in
      src/utils/mount.ecryptfs_private.c.
    - CVE-2011-1833
  * SECURITY UPDATE: mtab corruption via improper handling (LP: #732628)
    - debian/patches/CVE-2011-1831,1832,1834.patch: modify mtab via a temp
      file first and make sure it succeeds before replacing the real mtab
      in src/utils/mount.ecryptfs_private.c.
    - CVE-2011-1834
  * SECURITY UPDATE: key poisoning via insecure temp directory handling
    (LP: #732628)
    - debian/patches/CVE-2011-1835.patch: make sure we don't copy into a
      user controlled directory in src/utils/ecryptfs-setup-private.
    - CVE-2011-1835
  * SECURITY UPDATE: information disclosure via recovery mount in /tmp
    (LP: #732628)
    - debian/patches/CVE-2011-1836.patch: mount inside protected
      subdirectory in src/utils/ecryptfs-recover-private.
    - CVE-2011-1836
  * SECURITY UPDATE: arbitrary file overwrite via lock counter race
    condition (LP: #732628)
    - debian/patches/CVE-2011-1837.patch: verify permissions with a file
      descriptor, and don't follow symlinks in
      src/utils/mount.ecryptfs_private.c.
    - CVE-2011-1837
 -- Marc Deslauriers <email address hidden> Thu, 04 Aug 2011 10:43:33 -0400