SystemTap staprun module denial of service

systemtap-staprunmod-dos (63345) The risk level is classified as MediumMedium Risk

Description:

SystemTap could allow a local attacker to cause a denial of service, caused by improper checks of previously loaded modules. An attacker could exploit this vulnerability to gain elevated privileges.

*CVSS:

Base Score: 4.9
  Access Vector: Local
  Access Complexity: Low
  Authentication: None
  Confidentiality Impact: None
  Integrity Impact: None
  Availability Impact: Complete
 
Temporal Score: 3.6
  Exploitability: Unproven
  Remediation Level: Official-Fix
  Report Confidence: Confirmed

Consequences:

Denial of Service

Remedy:

Apply the appropriate patch for your system. See References.

References:

  • Mailing list for the systemtap project: important systemtap security fix.
  • SystemTap Web page: SystemTap.
  • BID-44917: SystemTap 'Staprun' Module Unloading Local Denial of Service Vulnerability
  • CVE-2010-4171: The staprun runtime tool in SystemTap 1.3 does not verify that a module to unload was previously loaded by SystemTap, which allows local users to cause a denial of service (unloading of arbitrary kernel modules).
  • DSA-2348: systemtap -- several vulnerabilities
  • OSVDB ID: 69490: SystemTap /usr/bin/staprun Arbitrary Unused Module Unloading Local DoS
  • RHSA-2010-0894: Important: systemtap security update
  • SA42256: SystemTap Denial of Service and Privilege Escalation Vulnerabilities
  • SECTRACK ID: 1024754: SystemTap Lets Local Users Gain Elevated Privileges and Deny Service

Platforms Affected:

  • RedHat Enterprise Linux 5
  • RedHat Enterprise Linux 5 Client
  • RedHat Enterprise Linux 6 Server
  • RedHat Enterprise Linux 6 Workstation
  • RedHat Enterprise Linux Desktop 6
  • RedHat Enterprise Linux HPC Node 6
  • RedHat Enterprise Linux Server EUS 6.0.z
  • SystemTap SystemTap 1.3

Reported:

Nov 17, 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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