CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:L/AC:L/Au:N/C:P/I:P/A:P
AI Score
Confidence
High
EPSS
Percentile
5.1%
Vasiliy Kulikov and Dan Rosenberg discovered that eCryptfs incorrectly
validated permissions on the requested mountpoint. A local attacker could
use this flaw to mount to arbitrary locations, leading to privilege
escalation. (CVE-2011-1831)
Vasiliy Kulikov and Dan Rosenberg discovered that eCryptfs incorrectly
validated permissions on the requested mountpoint. A local attacker could
use this flaw to unmount to arbitrary locations, leading to a denial of
service. (CVE-2011-1832)
Vasiliy Kulikov and Dan Rosenberg discovered that eCryptfs incorrectly
validated permissions on the requested source directory. A local attacker
could use this flaw to mount an arbitrary directory, possibly leading to
information disclosure. A pending kernel update will provide the other
half of the fix for this issue. (CVE-2011-1833)
Dan Rosenberg and Marc Deslauriers discovered that eCryptfs incorrectly
handled modifications to the mtab file when an error occurs. A local
attacker could use this flaw to corrupt the mtab file, and possibly unmount
arbitrary locations, leading to a denial of service. (CVE-2011-1834)
Marc Deslauriers discovered that eCryptfs incorrectly handled keys when
setting up an encrypted private directory. A local attacker could use this
flaw to manipulate keys during creation of a new user. (CVE-2011-1835)
Marc Deslauriers discovered that eCryptfs incorrectly handled permissions
during recovery. A local attacker could use this flaw to possibly access
another user’s data during the recovery process. This issue only applied to
Ubuntu 11.04. (CVE-2011-1836)
Vasiliy Kulikov discovered that eCryptfs incorrectly handled lock counters.
A local attacker could use this flaw to possibly overwrite arbitrary files.
The default symlink restrictions in Ubuntu 10.10 and 11.04 should protect
against this issue. (CVE-2011-1837)
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
Ubuntu | 11.04 | noarch | ecryptfs-utils | < 87-0ubuntu1.1 | UNKNOWN |
Ubuntu | 11.04 | noarch | libecryptfs-dev | < 87-0ubuntu1.1 | UNKNOWN |
Ubuntu | 11.04 | noarch | libecryptfs0 | < 87-0ubuntu1.1 | UNKNOWN |
Ubuntu | 10.10 | noarch | ecryptfs-utils | < 83-0ubuntu3.2.10.10.1 | UNKNOWN |
Ubuntu | 10.10 | noarch | libecryptfs-dev | < 83-0ubuntu3.2.10.10.1 | UNKNOWN |
Ubuntu | 10.10 | noarch | libecryptfs0 | < 83-0ubuntu3.2.10.10.1 | UNKNOWN |
Ubuntu | 10.04 | noarch | ecryptfs-utils | < 83-0ubuntu3.2.10.04.1 | UNKNOWN |
Ubuntu | 10.04 | noarch | libecryptfs-dev | < 83-0ubuntu3.2.10.04.1 | UNKNOWN |
Ubuntu | 10.04 | noarch | libecryptfs0 | < 83-0ubuntu3.2.10.04.1 | UNKNOWN |