Security Bulletin
Summary
The libuser library implements a standardized interface for manipulating and administering user and group accounts used by multiple programs on the system. Security vulnerabilities have been discovered in libuser used with IBM Security Network Protection.
Vulnerability Details
CVE ID: 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 the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H)
CVE ID: 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 the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
Affected Products and Versions
IBM Security Network Protection 5.2
IBM Security Network Protection 5.3
Remediation/Fixes
|
Product | VRMF | Remediation/First Fix |
| IBM Security Network Protection | Firmware version 5.2 | Download 5.2.0.0-ISS-XGS-All-Models-Hotfix-FP0012 from IBM Fix Central and upload and install via the Fix Packs page of the local management interface. |
| IBM Security Network Protection | Firmware version 5.3 | Install Firmware 5.3.1.5 from the Available Updates page of the Local Management Interface, or by performing a One Time Scheduled Installation from SiteProtector. |
Workarounds and Mitigations
None
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References
Change History
03 September 2015: 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
Review the IBM security bulletin disclaimer and definitions regarding your responsibilities for assessing potential impact of security vulnerabilities to your environment.
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Document Information
Modified date:
16 June 2018
UID
swg21964539