National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2011-1021 Detail

Current Description

drivers/acpi/debugfs.c in the Linux kernel before 3.0 allows local users to modify arbitrary kernel memory locations by leveraging root privileges to write to the /sys/kernel/debug/acpi/custom_method file. NOTE: this vulnerability exists because of an incomplete fix for CVE-2010-4347.

Source:  MITRE
View Analysis Description

Impact

CVSS v2.0 Severity and Metrics:

Base Score: 3.6 LOW
Vector: (AV:L/AC:L/Au:N/C:N/I:P/A:P) (V2 legend)
Impact Subscore: 4.9
Exploitability Subscore: 3.9


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

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://ftp.osuosl.org/pub/linux/kernel/v3.0/ChangeLog-3.0
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=526b4af47f44148c9d665e57723ed9f86634c6e3
http://www.openwall.com/lists/oss-security/2011/02/25/5
https://bugzilla.redhat.com/show_bug.cgi?id=680841
https://github.com/torvalds/linux/commit/526b4af47f44148c9d665e57723ed9f86634c6e3 Exploit Patch

Technical Details

Vulnerability Type (View All)

  • Permissions, Privileges, and Access Control (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)
2.6.9
 cpe:2.3:o:linux:linux_kernel:2.6.9:rc1:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:o:linux:linux_kernel:2.6.9:rc2:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:o:linux:linux_kernel:2.6.9:rc3:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:o:linux:linux_kernel:2.6.9:rc4:*:*:*:*:*:*
     Show Matching CPE(s)


Change History

1 change record found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2011-1021
NVD Published Date:
06/21/2012
NVD Last Modified:
06/22/2012