Multiple vulnerabilities in IBM Cloud Pak System

Published: 2022-08-18

Risk	High
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2021-21994 CVE-2021-21995
CWE-ID	CWE-287 CWE-125
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	IBM Cloud Pak System Server applications / Server solutions for antivurus protection
Vendor	IBM Corporation

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Improper Authentication

EUVDB-ID: #VU54814

Risk: High

CVSSv3.1: 7.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-21994

CWE-ID: CWE-287 - Improper Authentication

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass authentication process.

The vulnerability exists due to an error in when processing authentication requests in SFCB (Small Footprint CIM Broker). A remote attacker can send specially crafted requests to port 5989/tcp, bypass SFCB authentication and gain unauthorized access to the system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

IBM Cloud Pak System: 2.3.0.1 - 2.3.3.3 iFix 1

External links

http://www.ibm.com/support/pages/node/6499579

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Out-of-bounds read

EUVDB-ID: #VU54816

Risk: Medium

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-21995

CWE-ID: CWE-125 - Out-of-bounds read