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.
Get Notified about Future Security Bulletins
References
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
Review the IBM security bulletin disclaimer and definitions regarding your responsibilities for assessing potential impact of security vulnerabilities to your environment.
Internal Use Only
CQ S1060024 [PSIRT 3604] IBM product record 60806 for SONAS and 60815 for IFS - Open Source libuser Vunlerability
Was this topic helpful?
Document Information
Modified date:
17 June 2018
UID
ssg1S1005336