Information disclosure in IBM WIoTP MessageGateway

1) Out-of-bounds read

EUVDB-ID: #VU56064

Risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2021-3712

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

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition when processing ASN.1 strings related to a confusion with NULL termination of strings in array. A remote attacker can pass specially crafted data to the application to trigger an out-of-bounds read error and read contents of memory on the system or perform a denial of service (DoS) attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

IBM WIoTP MessageGateway: 5.0.0.1

CPE2.3

• cpe:2.3:a:ibm_corporation:ibm_wiotp_messagegateway:5.0.0.1:*:*:*:*:*:*:*

External links

https://www.ibm.com/blogs/psirt/security-bulletin-openssl-publicly-disclosed-vulnerability-affects-messagegateway-cve-2021-3712/
https://www.ibm.com/support/pages/node/6491141

Q & A

Can this vulnerability be exploited remotely?

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

Is there known malware, which exploits this vulnerability?

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