Red Hat Linux Kernel qla2xxx security bypass

kernel-qla2xxx-security-bypass (55809) The risk level is classified as MediumMedium Risk

Description:

Red Hat Linux Kernel could allow a local attacker to bypass security restrictions, caused by an error in the qla2xxx driver. The sysfs pseduofiles supported by the driver default to world writable permissions. By modifying the world writable files, a local attacker could exploit this vulnerability to bypass security restrictions to set SCSI host attributes.

*CVSS:

Base Score: 2.1
  Access Vector: Local
  Access Complexity: Low
  Authentication: None
  Confidentiality Impact: None
  Integrity Impact: Partial
  Availability Impact: None
 
Temporal Score: 1.6
  Exploitability: Unproven
  Remediation Level: Official-Fix
  Report Confidence: Confirmed

Consequences:

Bypass Security

Remedy:

Apply the appropriate update for your system. See References.

References:

  • Red Hat Bugzilla Bug 537177: CVE-2009-3556 kernel: qla2xxx NPIV vport management pseudofiles are world writable.
  • The The Linux Kernel Archives Web site: The Linux Kernel Archives.
  • VMSA-2010-0009: ESXi utilities and ESX Service Console third party updates.
  • BID-37876: Red Hat Linux Kernel 'qla2xxx' DriverSecurity Bypass Vulnerability
  • CVE-2009-3556: 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.
  • RHSA-2010-0046: Important: kernel security and bug fix update
  • SA39920: VMware vMA kernel Multiple Vulnerabilities
  • SA39972: VMware ESXi ntp Mode 7 Request Denial of Service
  • SA39973: VMware ESX Multiple krb5 Vulnerabilities
  • SA39974: VMware ESX GCC libtool Search Path Privilege Escalation Security Issue
  • SA39975: VMware ESX gzip unlzw() Integer Underflow Vulnerability
  • SA39976: VMware vMA OpenSSL CRYPTO_free_all_ex_data() Memory Leak Vulnerability
  • SA39977: VMware vMA Multiple krb5 Vulnerabilities
  • SA39979: VMware vMA GCC libtool Search Path Privilege Escalation Security Issue
  • SA39980: VMware vMA gzip unlzw() Integer Underflow Vulnerability
  • SA39981: VMware vMA sudo Privilege Escalation Security Issues
  • SUSE-SA:2010:009: Linux kernel security update
  • SUSE-SA:2010:019: Linux kernel security update

Platforms Affected:

  • Novell SLE SDK 10
  • Novell SLE SDK 10 SP2
  • Novell SUSE Linux Enterprise 10 SP2 DEBUGINFO
  • Novell SUSE Linux Enterprise Desktop 10 SP2
  • Novell SUSE Linux Enterprise Server 10
  • Novell SUSE Linux Enterprise Server 10 SP2
  • RedHat Enterprise Linux 5
  • RedHat Enterprise Linux 5 Server
  • RedHat Enterprise Linux 5 Client
  • RedHat Enterprise Linux 5.4.z EUS
  • RedHat Enterprise Linux Desktop 5 Client
  • VMware ESX Server 4.0
  • VMware ESXi Server 4.0

Reported:

Jan 19, 2010

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The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall IBM be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.

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