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Security Bulletin: Stack-based buffer overflow and elevation of privileges vulnerabilities in IBM Spectrum Protect Server and Storage Agents (CVE-2019-4087, CVE-2019-4088)

Security Bulletin


Summary

The IBM Spectrum Protect (formerly Tivoli Storage Manager) Server and Storage Agents are vulnerable to a stack-based buffer overflow and elevation of privileges.

Vulnerability Details

CVEID: CVE-2019-4087
DESCRIPTION: IBM Spectrum Protect Servers and Storage Agents are vulnerable to a stack-based buffer overflow, caused by improper bounds checking by servers and storage agents in response to specifically crafted communication exchanges. By sending an overly long request, a remote attacker could overflow a buffer and execute arbitrary code on the system with instance id privileges or cause the server or storage agent to crash.
CVSS Base Score: 9.8
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/157510 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)

CVEID: CVE-2019-4088
DESCRIPTION: IBM Spectrum Protect Servers and Storage Agents could allow a local attacker to gain elevated privileges on the system, caused by loading a specially crafted library loaded by the dsmqsan module. By setting up such a library, a local attacker could exploit this vulnerability to gain root privileges on the vulnerable system.
CVSS Base Score: 7.4
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/157511 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H)

Affected Products and Versions

This vulnerability affects the following IBM Spectrum Protect (formerly Tivoli Storage Manager) Server levels:

  • 8.1.0.0 through 8.1.7.xxx
  • 7.1.0.0 through 7.1.9.200

Remediation/Fixes

IBM Spectrum Protect
Server Release
First Fixing
VRM Level
Platform Link to Fix
            8.1 8.1.8 AIX
Linux
Windows
            7.1




7.1.9.300




AIX
HP-UX
Linux
Solaris
Windows





Workarounds and Mitigations

None.

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Reference

Complete CVSS v3 Guide
On-line Calculator v3

Related Information

IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog

Acknowledgement

These vulnerabilities were reported to IBM by Sébastien Charbonnier and Undr

Change History

28 June 2019 - original version published

*The CVSS Environment Score is customer environment specific and will ultimately impact the Overall CVSS Score. Customers can evaluate the impact of this vulnerability in their environments by accessing the links in the Reference section of this Security Bulletin.

Disclaimer

According to the Forum of Incident Response and Security Teams (FIRST), the Common Vulnerability Scoring System (CVSS) is an "industry open standard designed to convey vulnerability severity and help to determine urgency and priority of response." IBM PROVIDES THE CVSS SCORES ""AS IS"" WITHOUT WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY.


Cross reference information
Product Component Platform Version Edition
Tivoli Storage Manager Server AIX, HP-UX, Linux, Solaris, Windows 7.1

Document information

More support for: IBM Spectrum Protect

Component: Server

Software version: 7.1, 8.1

Operating system(s): AIX, HP-UX, Linux, Solaris, Windows

Reference #: 0882472

Modified date: 02 July 2019