What is the severity of CVE-2023-24609?

CVE-2023-24609 is classified as a high severity vulnerability due to its potential to cause CPU exhaustion and denial of service.

How do I fix CVE-2023-24609?

To mitigate CVE-2023-24609, upgrade Matrix SSL to version 4.6.1 or above, and apply patches provided by Rambus for the TLS Toolkit.

What systems are affected by CVE-2023-24609?

CVE-2023-24609 affects Matrix SSL versions 4.0.0 through 4.6.0 and the Rambus TLS Toolkit.

What type of attacks can exploit CVE-2023-24609?

CVE-2023-24609 can be exploited through crafted TLS messages leading to an integer overflow and potential denial of service.

Is CVE-2023-24609 remote exploitable?

Yes, CVE-2023-24609 can be exploited remotely over a network by sending specially crafted TLS messages.

Vulnerability/
CVE-2023-24609

high

7.5

CWE

190

22/12/2023

2/8/2024

CVE-2023-24609: Integer Overflow

First published: Fri Dec 22 2023(Updated: )

Matrix SSL 4.x through 4.6.0 and Rambus TLS Toolkit have a length-subtraction integer overflow for Client Hello Pre-Shared Key extension parsing in the TLS 1.3 server. An attacked device calculates an SHA-2 hash over at least 65 KB (in RAM). With a large number of crafted TLS messages, the CPU becomes heavily loaded. This occurs in tls13VerifyBinder and tls13TranscriptHashUpdate.

Credit: cve@mitre.org

Affected Software	Affected Version	How to fix
Matrixssl Matrixssl	>=4.0.0<=4.6.0
Rambus TLS Toolkit

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Frequently Asked Questions

What is the severity of CVE-2023-24609?
CVE-2023-24609 is classified as a high severity vulnerability due to its potential to cause CPU exhaustion and denial of service.
How do I fix CVE-2023-24609?
To mitigate CVE-2023-24609, upgrade Matrix SSL to version 4.6.1 or above, and apply patches provided by Rambus for the TLS Toolkit.
What systems are affected by CVE-2023-24609?
CVE-2023-24609 affects Matrix SSL versions 4.0.0 through 4.6.0 and the Rambus TLS Toolkit.
What type of attacks can exploit CVE-2023-24609?
CVE-2023-24609 can be exploited through crafted TLS messages leading to an integer overflow and potential denial of service.
Is CVE-2023-24609 remote exploitable?
Yes, CVE-2023-24609 can be exploited remotely over a network by sending specially crafted TLS messages.

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vendor/matrixssl
canonical/matrixssl matrixssl
version/matrixssl matrixssl/4.0.0
version/matrixssl matrixssl/4.6.0
vendor/rambus
canonical/rambus tls toolkit

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