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Security Bulletin: Vulnerability in libcurl affects the OS image for RedHat Enterprise Linux for IBM Cloud Pak System (CVE-2019-5436)

Security Bulletin


Vulnerability has been identified in libcurl that is used in OS image for RedHat Enterprise Linux for IBM Cloud Pak System. This security bulletin applies to the OS image for RedHat Enterprise Linux v7.7. OS image for RedHat Enterprise Linux has addressed the vulnerability.

Vulnerability Details

CVEID:   CVE-2019-5436
DESCRIPTION:   cURL libcurl is vulnerable to a heap-based buffer overflow, caused by improper bounds checking by the tftp_receive_packet() function. By sending overly long data, a remote attacker could overflow a buffer and execute arbitrary code on the system.
CVSS Base score: 6.3
CVSS Temporal Score: See: for the current score.
CVSS Vector: (CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L)

Affected Products and Versions

Affected Product(s)Version(s)
IBM Cloud Pak System v., v.
OS Image for RedHat Enterprisev3.0.14,  v3.0.15


for Cloud Pak System v., v., v2.3.2.0
 apply iFix as available at IBM Fix Central here,  this service applies to OS Image for Red Hat Linux v7.7

Upgrade to IBM Cloud Pak System v2.3.3.0 ,  

Information on release available here :

Workarounds and Mitigations


Get Notified about Future Security Bulletins




Change History

11 Sept 2020: Initial Publication

*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.


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.

Document Location


[{"Business Unit":{"code":"BU025","label":"IBM Cloud and Cognitive Software"},"Product":{"code":"SSFQWQ","label":"IBM Cloud Pak System"},"Component":"","Platform":[{"code":"PF016","label":"Linux"}],"Version":"2.3","Edition":""}]

Document Information

Modified date:
11 September 2020