// For flags

CVE-2009-3286

kernel: O_EXCL creates on NFSv4 are broken

Severity Score

4.6
*CVSS v2

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

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.

NFSv4 en el kernel de Linux versión 2.6.18, y posiblemente otras versiones, no limpia apropiadamente un inode cuando se produce un fallo de creación de O_EXCL, lo que causa que los archivos se creen con configuraciones no confiables, tales como bits setuid, y posiblemente permite a los usuarios locales alcanzar privilegios, relacionados con la ejecución de la función do_open_permission incluso cuando se produce un fallo en una creación.

*Credits: N/A
CVSS Scores
Attack Vector
Local
Attack Complexity
Low
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2009-09-22 CVE Reserved
  • 2009-09-22 CVE Published
  • 2023-03-08 EPSS Updated
  • 2024-08-07 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-264: Permissions, Privileges, and Access Controls
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Linux
Search vendor "Linux"
 Linux Kernel
Search vendor "Linux" for product "Linux Kernel"
 2.6.18
Search vendor "Linux" for product "Linux Kernel" and version "2.6.18"
-
Affected