Security Bulletin
Summary
IBM Sterling Connect:Direct for UNIX could allow a user who is authorized for limited Connect:Direct privileges to attack through a custom application written using the Connect:Direct for UNIX C/C++ API by replacing the system implementation of getuid() with a malicious implementation and gain unauthorized privilege to access to the Connect:Direct for UNIX Server.
Vulnerability Details
CVEID: CVE-2019-4529
DESCRIPTION: IBM Sterling Connect:Direct for UNIX could allow an authenticated attacker to replace the system implementation of getuid() with a malicious implementation allowing the user to gain unauthorized access to the CD UNIX Server through a custom application written using the CD UNIX C/C++ API.
CVSS Base Score: 7.5
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/165585 for the current score.
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H)
Affected Products and Versions
IBM Sterling Connect:Direct for Unix 6.0.0
IBM Sterling Connect:Direct for Unix 4.3.0
IBM Sterling Connect:Direct for Unix 4.2.0
Remediation/Fixes
V.R.M.F |
APAR | Remediation/First Fix |
6.0.0 | IT27957 | Apply 6.0.0.1.iFix006, available in cumulative iFix 6.0.0.1.008 on Fix Central |
4.3.0 | IT27957 | Apply 4.3.0.1.iFix009, available in cumulative iFix 4.3.0.1.010 on Fix Central |
4.2.0 | IT27957 | Apply 4.2.0.4.iFix122, available in cumulative Fix Pack 4.2.0.5 on Fix Central |
For versions previous to 4.2.0, IBM recommends upgrading to a fixed, supported version of the product.
Workarounds and Mitigations
None
Get Notified about Future Security Bulletins
Important Note
IBM strongly suggests that all System z customers be subscribed to the System z Security Portal to receive the latest critical System z security and integrity service. If you are not subscribed, see the instructions on the System z Security web site. Security and integrity APARs and associated fixes will be posted to this portal. IBM suggests reviewing the CVSS scores and applying all security or integrity fixes as soon as possible to minimize any potential risk.
References
Change History
10 October 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
Review the IBM security bulletin disclaimer and definitions regarding your responsibilities for assessing potential impact of security vulnerabilities to your environment.
Was this topic helpful?
Document Information
Modified date:
24 July 2020
UID
ibm11074722