CVE-2011-2495
Published: 03 October 2011
fs/proc/base.c in the Linux kernel before 2.6.39.4 does not properly restrict access to /proc/#####/io files, which allows local users to obtain sensitive I/O statistics by polling a file, as demonstrated by discovering the length of another user's password.
From the Ubuntu security team
Vasiliy Kulikov discovered that /proc/PID/io did not enforce access restrictions. A local attacker could exploit this to read certain information, leading to a loss of privacy.
Priority
Medium
Status
| Package | Release | Status |
|---|---|---|
|
linux Launchpad, Ubuntu, Debian |
Upstream |
Released
(3.1~rc1)
|
|
Patches: Introduced by 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Fixed by 1d1221f375c94ef961ba8574ac4f85c8870ddd51 Introduced by d84f4f992cbd76e8f39c488cf0c5d123843923b1 Fixed by 293eb1e7772b25a93647c798c7b89bf26c2da2e0 |
||
|
linux-ec2 Launchpad, Ubuntu, Debian |
Upstream |
Released
(3.1~rc1)
|
|
linux-fsl-imx51 Launchpad, Ubuntu, Debian |
Upstream |
Released
(3.1~rc1)
|
|
linux-lts-backport-maverick Launchpad, Ubuntu, Debian |
Upstream |
Released
(3.1~rc1)
|
|
linux-lts-backport-natty Launchpad, Ubuntu, Debian |
Upstream |
Released
(3.1~rc1)
|
|
linux-lts-backport-oneiric Launchpad, Ubuntu, Debian |
Upstream |
Released
(3.1~rc1)
|
|
linux-mvl-dove Launchpad, Ubuntu, Debian |
Upstream |
Released
(3.1~rc1)
|
|
linux-ti-omap4 Launchpad, Ubuntu, Debian |
Upstream |
Released
(3.1~rc1)
|
References
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-2495
- https://lkml.org/lkml/2011/6/24/88
- http://www.openwall.com/lists/oss-security/2011/06/24/6
- https://ubuntu.com/security/notices/USN-1236-1
- https://ubuntu.com/security/notices/USN-1239-1
- https://ubuntu.com/security/notices/USN-1242-1
- https://ubuntu.com/security/notices/USN-1245-1
- https://ubuntu.com/security/notices/USN-1241-1
- https://ubuntu.com/security/notices/USN-1243-1
- https://ubuntu.com/security/notices/USN-1244-1
- https://ubuntu.com/security/notices/USN-1240-1
- https://ubuntu.com/security/notices/USN-1253-1
- https://ubuntu.com/security/notices/USN-1279-1
- https://ubuntu.com/security/notices/USN-1281-1
- https://ubuntu.com/security/notices/USN-1285-1
- NVD
- Launchpad
- Debian