PT-2023-27527 · Splunk · Splunk Enterprise

Aaron Devaney + 1 · Published 2023-08-30 · Updated 2024-04-10 · CVE-2023-40593

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions Splunk Enterprise versions prior to 9.0.6 Splunk Enterprise versions prior to 8.2.12

Description A malicious actor can send a malformed security assertion markup language (SAML) request to the "/saml/acs" REST endpoint, causing a denial of service through a crash or hang of the Splunk daemon.

Recommendations For versions prior to 9.0.6, update to version 9.0.6 or later to resolve the issue. For versions prior to 8.2.12, update to version 8.2.12 or later to resolve the issue. As a temporary workaround, consider restricting access to the "/saml/acs" REST endpoint to minimize the risk of exploitation.

Fix

DoS

Resource Exhaustion

Weakness Enumeration

CWE-400

Related Identifiers

CVE-2023-40593

Affected Products

Splunk Enterprise

References · 5

• https://advisory.splunk.com/advisories/SVD-2023-0802 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2023-40593 · Vendor Advisory
• https://research.splunk.com/application/8e8a86d5-f323-4567-95be-8e817e2baee6 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2023-40593 · Security Note
• https://t.me/cibsecurity/69475 · Telegram Post