SB2009051401 - Security restrictions bypass in Linux kernel

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Main Vulnerability Database SB2009051401

SB2009051401 - Security restrictions bypass in Linux kernel

Published: May 14, 2009

Security Bulletin ID SB2009051401
Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Data manipulation

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 security vulnerability.


1) Security restrictions bypass (CVE-ID: CVE-2009-1630)

The vulnerability allows a local user to read and manipulate data.

The nfs_permission function in fs/nfs/dir.c in the NFS client implementation in the Linux kernel 2.6.29.3 and earlier, when atomic_open is available, does not check execute (aka EXEC or MAY_EXEC) permission bits, which allows local users to bypass permissions and execute files, as demonstrated by files on an NFSv4 fileserver.


Remediation

Install update from vendor's website.

References