Remote code execution in IBM Cloud Pak System



Published: 2021-11-29
Risk High
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2020-27221
CWE-ID CWE-121
Exploitation vector Network
Public exploit N/A
Vulnerable software
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IBM Cloud Pak System
Server applications / Server solutions for antivurus protection

Vendor IBM Corporation

Security Bulletin

This security bulletin contains one high risk vulnerability.

1) Stack-based buffer overflow

EUVDB-ID: #VU49916

Risk: High

CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-27221

CWE-ID: CWE-121 - Stack-based buffer overflow

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error when the virtual machine or JNI natives are converting from UTF-8 characters to platform encoding. A remote unauthenticated attacker can trigger a stack-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

IBM Cloud Pak System: 2.3.0.1 - 2.3.3.3

External links

http://www.ibm.com/blogs/psirt/security-bulletin-vulnerability-in-ibm-sdk-java-affects-ibm-cloud-pak-system-cve-2020-27221-2/
http://www.ibm.com/support/pages/node/6516420


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.



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