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Last updated: 9/1/2014 9:51:35 PM

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National Cyber Awareness System

Vulnerability Summary for CVE-2009-3556

Original release date: 01/27/2010
Last revised: 03/19/2012
Source: US-CERT/NIST

Overview

A certain Red Hat configuration step for the qla2xxx driver in the Linux kernel 2.6.18 on Red Hat Enterprise Linux (RHEL) 5, when N_Port ID Virtualization (NPIV) hardware is used, sets world-writable permissions for the (1) vport_create and (2) vport_delete files under /sys/class/scsi_host/, which allows local users to make arbitrary changes to SCSI host attributes by modifying these files.

Impact

CVSS Severity (version 2.0):
CVSS v2 Base Score: 1.9 (LOW) (AV:L/AC:M/Au:N/C:N/I:P/A:N) (legend)
Impact Subscore: 2.9
Exploitability Subscore: 3.4
CVSS Version 2 Metrics:
Access Vector: Locally exploitable
Access Complexity: Medium
Authentication: Not required to exploit
Impact Type: Allows unauthorized modification

Vendor Statements (disclaimer)

Official Statement from Red Hat (01/28/2010)
This issue did not affect the versions of the Linux kernel as shipped with Red Hat Enterprise Linux 3, 4 and Red Hat Enterprise MRG. Shipped kernels do not include upstream commit d025c9db that introduced the problem. This upstream commit was backported in Red Hat Enterprise Linux 5 via RHBA-2008:0314 update. Issue was addressed in Red Hat Enterprise Linux 5 via https://rhn.redhat.com/errata/RHSA-2010-0046.html

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External Source: CONFIRM
Name: https://bugzilla.redhat.com/show_bug.cgi?id=537177
External Source: OVAL
Name: oval:org.mitre.oval:def:6744
External Source: OVAL
Name: oval:org.mitre.oval:def:9738
External Source: CONFIRM
Name: http://support.avaya.com/css/P8/documents/100073666
External Source: SUSE
Name: SUSE-SA:2010:019
External Source: XF
Name: kernel-qla2xxx-security-bypass(55809)
External Source: MLIST
Name: [oss-security] 20100120 CVE-2009-3556 kernel: qla2xxx NPIV vport management pseudofiles are world writable
External Source: REDHAT
Name: RHSA-2010:0046
External Source: REDHAT
Name: RHSA-2010:0095

References to Check Content

Identifier: oval:org.mitre.oval:def:6744
Check System: http://oval.mitre.org/XMLSchema/oval-definitions-5
Identifier: oval:org.mitre.oval:def:9738
Check System: http://oval.mitre.org/XMLSchema/oval-definitions-5

Technical Details

Vulnerability Type (View All)
  • Permissions, Privileges, and Access Control (CWE-264)