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Security Bulletin: libuser vulnerabilities affect IBM Storwize V7000 Unified (CVE-2015-3245 and CVE-2015-3246)

Security Bulletin


Summary

Fixes for security vulnerabilities in libuser are available with IBM Storwize V7000 Unified version 1.5.2.2

Vulnerability Details

CVEID: CVE-2015-3245

DESCRIPTION: libuser is vulnerable to a denial of service, caused by the failure to properly filter out newline characters by the chfn() function within the userhelper utility. A local authenticated attacker could exploit this vulnerability to inject newline characters into the /etc/passwd file and cause a denial of service.

CVSS Base Score: 4.7
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/105022 for more information
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:L/AC:H/PR:L/UI:N/S:U/CI:N/I:N/A:H)


CVEID: CVE-2015-3246

DESCRIPTION: libuser could allow a local authenticated attacker to gain elevated privileges on the system, caused by the improper handling of the /etc/passwd file. An attacker could exploit this vulnerability to gain root privileges on the system.

CVSS Base Score: 7.8
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/105023 for more information
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:L/AC:L/PR:L/UI:N/S:U/CI:H/I:H/A:H)

Affected Products and Versions

IBM Storwize V7000 Unified
The product is affected when running a code releases 1.5.0.0 to 1.5.2.1

Remediation/Fixes

A fix for these issues is in version 1.5.2.2 of IBM Storwize V7000 Unified. Customers running an affected version of V7000 Unified should upgrade to 1.5.2.2 or a later version, so that the fix gets applied.

Latest Storwize V7000 Unified Software

Workarounds and Mitigations

Workaround(s): None

Mitigation(s): Ensure that all users who have access to the system are authenticated by another security system such as a firewall.

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References

Off

Change History

3 August 2015: First draft
18 September 2015: Updated CVSS vectors as per CVSS v3

*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.

Internal Use Only

CQ S1060024 [PSIRT 3604] IBM product record 60806 for SONAS and 60815 for IFS - Open Source libuser Vunlerability

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Document Information

Modified date:
17 June 2018

UID

ssg1S1005336