Multiple vulnerabilities in IBM Event Streams



Published: 2022-11-01
Risk Medium
Patch available YES
Number of vulnerabilities 2
CVE-ID CVE-2021-38561
CVE-2021-43565
CWE-ID CWE-125
CWE-20
Exploitation vector Network
Public exploit N/A
Vulnerable software
Subscribe 		Event Streams
Client/Desktop applications / Other client software

Vendor IBM Corporation

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Out-of-bounds read

EUVDB-ID: #VU65006

Risk: Medium

CVSSv3.1:

CVE-ID: CVE-2021-38561

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

Exploit availability: No

Description

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.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Event Streams: 10.0.0 - 11.0.4

CPE2.3 External links

http://www.ibm.com/blogs/psirt/security-bulletin-vulnerabilities-in-golang-go-affect-ibm-event-streams-cve-2021-38561-and-cve-2021-43565/
http://www.ibm.com/support/pages/node/6833168


Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?

2) Input validation error

EUVDB-ID: #VU64805

Risk: Medium

CVSSv3.1:

CVE-ID: CVE-2021-43565

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

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.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Event Streams: 10.0.0 - 11.0.4

CPE2.3 External links

http://www.ibm.com/blogs/psirt/security-bulletin-vulnerabilities-in-golang-go-affect-ibm-event-streams-cve-2021-38561-and-cve-2021-43565/
http://www.ibm.com/support/pages/node/6833168


Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?



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