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Vulnerability Details : CVE-2011-2495

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.
Publish Date : 2012-06-13 Last Update Date : 2013-12-30
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- CVSS Scores & Vulnerability Types

CVSS Score
2.1
Confidentiality Impact Partial (There is considerable informational disclosure.)
Integrity Impact None (There is no impact to the integrity of the system)
Availability Impact None (There is no impact to the availability of the system.)
Access Complexity Low (Specialized access conditions or extenuating circumstances do not exist. Very little knowledge or skill is required to exploit. )
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s)
CWE ID 264

- Additional Vendor Supplied Data

Vendor Impact CVSS Score CVSS Vector Report Date Publish Date
Redhat low
2.1
AV:L/AC:L/Au:N/C:P/I:N/A:N 2011-06-21 2011-06-21
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- Related OVAL Definitions

Title Definition Id Class Family
CVE-2011-2495 oval:org.opensuse.security:def:20112495 unix
DSA-2303-1 linux-2.6 -- privilege escalation/denial of service/information leak oval:org.mitre.oval:def:14248 unix
DSA-2303-2 linux-2.6 -- privilege escalation/denial of service/information leak oval:org.mitre.oval:def:14888 unix
DSA-2310-1 linux-2.6 -- privilege escalation/denial of service/information leak oval:org.mitre.oval:def:14257 unix
ELSA-2011:1189: kernel security, bug fix, and enhancement update (Important) oval:org.mitre.oval:def:23636 unix
ELSA-2011:1212: kernel security and bug fix update (Important) oval:org.mitre.oval:def:23293 unix
RHSA-2011:1189: kernel security, bug fix, and enhancement update (Important) oval:org.mitre.oval:def:22054 unix
RHSA-2011:1189: kernel security, bug fix, and enhancement update (Important) oval:com.redhat.rhsa:def:20111189 unix
RHSA-2011:1212: kernel security and bug fix update (Important) oval:org.mitre.oval:def:21200 unix
RHSA-2011:1212: kernel security and bug fix update (Important) oval:com.redhat.rhsa:def:20111212 unix
VMware ESXi and ESX updates to third party library and ESX Service Console oval:org.mitre.oval:def:20258 unix
OVAL (Open Vulnerability and Assessment Language) definitions define exactly what should be done to verify a vulnerability or a missing patch. Check out the OVAL definitions if you want to learn what you should do to verify a vulnerability.

- Products Affected By CVE-2011-2495

# Product Type Vendor Product Version Update Edition Language
1 OS Linux Linux Kernel 2.6.39 RC4 Version Details Vulnerabilities
2 OS Linux Linux Kernel 2.6.39 RC3 Version Details Vulnerabilities
3 OS Linux Linux Kernel 2.6.39 Version Details Vulnerabilities
4 OS Linux Linux Kernel 2.6.39 RC2 Version Details Vulnerabilities
5 OS Linux Linux Kernel 2.6.39 RC7 Version Details Vulnerabilities
6 OS Linux Linux Kernel 2.6.39 RC1 Version Details Vulnerabilities
7 OS Linux Linux Kernel 2.6.39 RC6 Version Details Vulnerabilities
8 OS Linux Linux Kernel 2.6.39 RC5 Version Details Vulnerabilities
9 OS Linux Linux Kernel 2.6.39.1 Version Details Vulnerabilities
10 OS Linux Linux Kernel 2.6.39.2 Version Details Vulnerabilities
11 OS Linux Linux Kernel 2.6.39.3 Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Linux Linux Kernel 11

- References For CVE-2011-2495

http://ftp.osuosl.org/pub/linux/kernel/v2.6/ChangeLog-2.6.39.4 CONFIRM
http://www.openwall.com/lists/oss-security/2011/06/27/1
MLIST [oss-security] 20110627 Re: CVE request: kernel: taskstats/procfs io infoleak
http://rhn.redhat.com/errata/RHSA-2011-1212.html
REDHAT RHSA-2011:1212
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=1d1221f375c94ef961ba8574ac4f85c8870ddd51 CONFIRM
https://bugzilla.redhat.com/show_bug.cgi?id=716825 CONFIRM
https://github.com/torvalds/linux/commit/1d1221f375c94ef961ba8574ac4f85c8870ddd51 CONFIRM

- Metasploit Modules Related To CVE-2011-2495

There are not any metasploit modules related to this vulnerability (Please visit www.metasploit.com for more information)


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