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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