CVE-2009-3286 Detail
Modified
This vulnerability has been modified since it was last analyzed by the NVD. It is awaiting reanalysis which may result in further changes to the information provided.
Current Description
NFSv4 in the Linux kernel 2.6.18, and possibly other versions, does not properly clean up an inode when an O_EXCL create fails, which causes files to be created with insecure settings such as setuid bits, and possibly allows local users to gain privileges, related to the execution of the do_open_permission function even when a create fails.
Source:
MITRE
View Analysis Description
Analysis Description
NFSv4 in the Linux kernel 2.6.18, and possibly other versions, does not properly clean up an inode when an O_EXCL create fails, which causes files to be created with insecure settings such as setuid bits, and possibly allows local users to gain privileges, related to the execution of the do_open_permission function even when a create fails. That also explains why we don't see this problem with root...the permission check is always passing there (provided we're not root squashing).
Source:
MITRE
Impact
CVSS v2.0 Severity and Metrics:
Base Score:
4.6 MEDIUM
Vector:
(AV:L/AC:L/Au:N/C:P/I:P/A:P)
(V2 legend)
Impact Subscore:
6.4
Exploitability Subscore:
3.9
Access Vector (AV):
Local
Access Complexity (AC):
Low
Authentication (AU):
None
Confidentiality (C):
Partial
Integrity (I):
Partial
Availability (A):
Partial
Additional Information:
Allows unauthorized disclosure of information
Allows unauthorized modification
Allows disruption of service
References to Advisories, Solutions, and Tools
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Technical Details
Vulnerability Type
(View All)
- Permissions, Privileges, and Access Controls (CWE-264)
Change History
2 change records found
- show changes
CVE Modified by MITRE -
9/18/2017 9:29:32 PM
| Action |
Type |
Old Value |
New Value |
| Added |
Reference |
|
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A7527 [No Types Assigned] |
| Added |
Reference |
|
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9757 [No Types Assigned] |
| Removed |
Reference |
http://oval.mitre.org/repository/data/getDef?id=oval:org.mitre.oval:def:7527 [No Types Assigned] |
|
| Removed |
Reference |
http://oval.mitre.org/repository/data/getDef?id=oval:org.mitre.oval:def:9757 [No Types Assigned] |
|
Initial CVE Analysis -
9/22/2009 4:05:00 PM
Quick Info
CVE Dictionary Entry:
CVE-2009-3286
NVD Published Date:
09/22/2009
NVD Last Modified:
09/18/2017
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