CVE-2011-1833
Published: 9 August 2011
Race condition in the ecryptfs_mount function in fs/ecryptfs/main.c in the eCryptfs subsystem in the Linux kernel before 3.1 allows local users to bypass intended file permissions via a mount.ecryptfs_private mount with a mismatched uid.
From the Ubuntu Security Team
Vasiliy Kulikov and Dan Rosenberg discovered that ecryptfs did not correctly check the origin of mount points. A local attacker could exploit this to trick the system into unmounting arbitrary mount points, leading to a denial of service.
Notes
| Author | Note |
|---|---|
| mdeslaur | There are two parts to this fix, 1- kernel fix, 2- userspace fix |
Priority
Status
| Package | Release | Status |
|---|---|---|
|
ecryptfs-utils Launchpad, Ubuntu, Debian |
hardy |
Not vulnerable
(code not present)
|
| lucid |
Released
(83-0ubuntu3.2.10.04.1)
|
|
| maverick |
Released
(83-0ubuntu3.2.10.10.1)
|
|
| natty |
Released
(87-0ubuntu1.1)
|
|
| oneiric |
Released
(89-0ubuntu2)
|
|
| upstream |
Needs triage
|
|
|
linux Launchpad, Ubuntu, Debian |
hardy |
Not vulnerable
|
| lucid |
Released
(2.6.32-35.78)
|
|
| maverick |
Released
(2.6.35-30.60)
|
|
| natty |
Released
(2.6.38-11.49)
|
|
| oneiric |
Not vulnerable
(3.0.0-8.11)
|
|
| upstream |
Released
(3.1~rc2)
|
|
|
Patches: Introduced by 237fead619984cc48818fe12ee0ceada3f55b012 |
||
|
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~rc2)
|
|
|
linux-fsl-imx51 Launchpad, Ubuntu, Debian |
hardy |
Does not exist
|
| lucid |
Released
(2.6.31-610.27)
|
|
| maverick |
Does not exist
|
|
| natty |
Does not exist
|
|
| oneiric |
Does not exist
|
|
| upstream |
Released
(3.1~rc2)
|
|
|
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~rc2)
|
|
|
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~rc2)
|
|
|
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~rc2)
|
|
|
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~rc2)
|
|
|
linux-ti-omap4 Launchpad, Ubuntu, Debian |
hardy |
Does not exist
|
| lucid |
Does not exist
|
|
| maverick |
Released
(2.6.35-903.23)
|
|
| natty |
Released
(2.6.38-1209.15)
|
|
| oneiric |
Not vulnerable
(3.0.0-1201.4)
|
|
| upstream |
Released
(3.1~rc2)
|
|
References
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-1833
- https://ubuntu.com/security/notices/USN-1188-1
- https://ubuntu.com/security/notices/USN-1202-1
- https://ubuntu.com/security/notices/USN-1204-1
- https://ubuntu.com/security/notices/USN-1212-1
- https://ubuntu.com/security/notices/USN-1211-1
- https://ubuntu.com/security/notices/USN-1219-1
- https://ubuntu.com/security/notices/USN-1227-1
- https://ubuntu.com/security/notices/USN-1239-1
- https://ubuntu.com/security/notices/USN-1245-1
- https://ubuntu.com/security/notices/USN-1240-1
- https://ubuntu.com/security/notices/USN-1253-1
- https://ubuntu.com/security/notices/USN-1256-1
- NVD
- Launchpad
- Debian