Multiple vulnerabilities in IBM Event Streams

Published: 2023-05-19

Risk	High
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2022-41724 CVE-2023-24532
CWE-ID	CWE-399 CWE-682
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) Resource management error

EUVDB-ID: #VU72685

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-41724

CWE-ID: CWE-399 - Resource Management Errors

Exploit availability: No

Description

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

The vulnerability exists due to improper management of internal resources in crypto/tls when handling large TLS handshake records. A remote attacker can send specially crafted data to the application and perform a denial of service (DoS) attack.

The vulnerability affects all TLS 1.3 clients, TLS 1.2 clients which explicitly enable session resumption (by setting Config.ClientSessionCache to a non-nil value), and TLS 1.3 servers which request client certificates (by setting Config.ClientAuth >= RequestClientCert).

Mitigation

Install update from vendor's website.

Vulnerable software versions

Event Streams: 10.0.0 - 11.1.5

External links

http://www.ibm.com/support/pages/node/6995167

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 calculation

EUVDB-ID: #VU73264

Risk: High

CVSSv3.1: 7.1 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-24532

CWE-ID: CWE-682 - Incorrect Calculation