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CVE-2011-2495

Date: June 13, 2012

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.

Language: C

Severity Score

Related Resources (10)

http://www.openwall.com/lists/oss-security/2011/06/27/1
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=1d1221f375c94ef961ba8574ac4f85c8870ddd51
http://ftp.osuosl.org/pub/linux/kernel/v2.6/ChangeLog-2.6.39.4
https://nvd.nist.gov/vuln/detail/CVE-2011-2495
https://people.canonical.com/~ubuntu-security/cve/CVE-2011-2495
http://rhn.redhat.com/errata/RHSA-2011-1212.html
https://access.redhat.com/security/cve/CVE-2011-2495
https://github.com/torvalds/linux/commit/1d1221f375c94ef961ba8574ac4f85c8870ddd51
https://bugzilla.redhat.com/show_bug.cgi?id=716825
https://www.mend.io/vulnerability-database/CVE-2011-2495

Severity Score

Weakness Type (CWE)

Permissions, Privileges, and Access Control

CWE-264

CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): LOW
Integrity (I): NONE
Availability (A): NONE

CVSS v2

Base Score:
Access Vector (AV): LOCAL
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): PARTIAL
Integrity (I): NONE
Availability (A): NONE
Additional information:

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