SB2022110104 - Multiple vulnerabilities in IBM Event Streams

Description

This security bulletin contains information about 2 secuirty vulnerabilities.

1) Out-of-bounds read (CVE-ID: CVE-2021-38561)

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary condition. A remote attacker can pass specially crafted input to the application, trigger an out-of-bounds read error and perform a denial of service (DoS) attack.

2) Input validation error (CVE-ID: CVE-2021-43565)

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input when parsing a Signer to ServerConfig.AddHostKey in cases where the Signer passed to AddHostKey does not implement AlgorithmSigner or the Signer passed to AddHostKey returns a key of type “ssh-rsa” from its PublicKey method. A remote attacker can pass specially crafted input to the application and perform a denial of service (DoS) attack.

Remediation

Install update from vendor's website.

References

• https://www.ibm.com/blogs/psirt/security-bulletin-vulnerabilities-in-golang-go-affect-ibm-event-streams-cve-2021-38561-and-cve-2021-43565/"
• https://www.ibm.com/blogs/psirt/security-bulletin-vulnerabilities-in-golang-go-affect-ibm-event-streams-cve-2021-38561-and-cve-2021-43565/</a><br>
• https://www.ibm.com/support/pages/node/6833168<br><br></p>