What is CVE-2023-40593?

CVE-2023-40593 is a vulnerability in Splunk Enterprise versions lower than 9.0.6 and 8.2.12 that allows a malicious actor to send a malformed SAML request, causing a denial of service.

How does CVE-2023-40593 affect Splunk Enterprise?

CVE-2023-40593 affects Splunk Enterprise versions lower than 9.0.6 and 8.2.12.

What is the severity of CVE-2023-40593?

CVE-2023-40593 has a severity level of high.

How can CVE-2023-40593 be exploited?

CVE-2023-40593 can be exploited by sending a malformed SAML request to the `/saml/acs` REST endpoint in Splunk Enterprise.

Is there a fix for CVE-2023-40593?

Yes, there is a fix available for CVE-2023-40593. Upgrade to Splunk Enterprise version 9.0.6 or 8.2.12.

Vulnerability/
CVE-2023-40593

high

7.5

CWE

400

30/8/2023

30/10/2024

CVE-2023-40593: Denial of Service (DoS) in Splunk Enterprise Using a Malformed SAML Request

First published: Wed Aug 30 2023(Updated: )

In Splunk Enterprise versions lower than 9.0.6 and 8.2.12, a malicious actor can send a malformed security assertion markup language (SAML) request to the `/saml/acs` REST endpoint which can cause a denial of service through a crash or hang of the Splunk daemon.

Credit: prodsec@splunk.com prodsec@splunk.com

Affected Software	Affected Version	How to fix
Splunk Splunk	>=8.2.0<8.2.12
Splunk Splunk	>=9.0.0<9.0.6
Splunk Splunk Cloud Platform	<=9.0.2305.100

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Frequently Asked Questions

What is CVE-2023-40593?
CVE-2023-40593 is a vulnerability in Splunk Enterprise versions lower than 9.0.6 and 8.2.12 that allows a malicious actor to send a malformed SAML request, causing a denial of service.
How does CVE-2023-40593 affect Splunk Enterprise?
CVE-2023-40593 affects Splunk Enterprise versions lower than 9.0.6 and 8.2.12.
What is the severity of CVE-2023-40593?
CVE-2023-40593 has a severity level of high.
How can CVE-2023-40593 be exploited?
CVE-2023-40593 can be exploited by sending a malformed SAML request to the `/saml/acs` REST endpoint in Splunk Enterprise.
Is there a fix for CVE-2023-40593?
Yes, there is a fix available for CVE-2023-40593. Upgrade to Splunk Enterprise version 9.0.6 or 8.2.12.

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vendor/splunk
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version/splunk splunk/8.2.0
version/splunk splunk/9.0.0
canonical/splunk splunk cloud platform
version/splunk splunk cloud platform/9.0.2305.100

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