National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2012-2123 Detail

Current Description

The cap_bprm_set_creds function in security/commoncap.c in the Linux kernel before 3.3.3 does not properly handle the use of file system capabilities (aka fcaps) for implementing a privileged executable file, which allows local users to bypass intended personality restrictions via a crafted application, as demonstrated by an attack that uses a parent process to disable ASLR.

Source:  MITRE
View Analysis Description

Impact

CVSS v2.0 Severity and Metrics:

Base Score: 7.2 HIGH
Vector: (AV:L/AC:L/Au:N/C:C/I:C/A:C) (V2 legend)
Impact Subscore: 10.0
Exploitability Subscore: 3.9


Access Vector (AV): Local
Access Complexity (AC): Low
Authentication (AU): None
Confidentiality (C): Complete
Integrity (I): Complete
Availability (A): Complete
Additional Information:
Allows unauthorized disclosure of information
Allows unauthorized modification
Allows disruption of service

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=d52fc5dde171f030170a6cb78034d166b13c9445
http://rhn.redhat.com/errata/RHSA-2012-0670.html
http://rhn.redhat.com/errata/RHSA-2012-0743.html
http://www.debian.org/security/2012/dsa-2469
http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.3.3
http://www.openwall.com/lists/oss-security/2012/04/20/6
http://www.securityfocus.com/bid/53166
http://www.securitytracker.com/id?1027072
https://bugzilla.redhat.com/show_bug.cgi?id=806722
https://exchange.xforce.ibmcloud.com/vulnerabilities/75043
https://github.com/torvalds/linux/commit/d52fc5dde171f030170a6cb78034d166b13c9445

Technical Details

Vulnerability Type (View All)

  • Permissions, Privileges, and Access Controls (CWE-264)

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
Up to (including)
3.3.1


Change History

3 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2012-2123
NVD Published Date:
05/17/2012
NVD Last Modified:
12/28/2017