IBM App Connect Enterprise update for Node.js

Published: 2021-10-04

Risk	Medium
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2021-22918 CVE-2021-22921
CWE-ID	CWE-125 CWE-276
Exploitation vector	Network
Public exploit	N/A
Vulnerable software	IBM App Connect Enterprise Universal components / Libraries / Software for developers
Vendor	IBM Corporation

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Out-of-bounds read

EUVDB-ID: #VU54624

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-2021-22918

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 in uv__idna_toascii() function in libuv, which is used to convert strings to ASCII. A remote attacker can force the application to resolve a specially crafted hostname, trigger an out-of-bounds read error and gain access to sensitive information or perform a denial of service (DoS) attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

IBM App Connect Enterprise: 11.0.0.0 - 12.0.1.0

CPE2.3

External links

https://www.ibm.com/blogs/psirt/security-bulletin-multiple-vulnerabilities-in-node-js-affect-ibm-app-connect-enterprise-v11-v12-cve-2021-22918-and-cve-2021-22921/
https://www.ibm.com/support/pages/node/6495043

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.

2) Incorrect default permissions

EUVDB-ID: #VU54625

Risk: Low

CVSSv4.0: 1.1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-22921

CWE-ID: CWE-276 - Incorrect Default Permissions