Resource exhaustion in Splunk
CVE-2023-40593
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.
Vulnerability class: DoS (Denial of Service)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.006 (46.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 47th percentile — 46.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000
Affected products
- Splunk
- Splunk Cloud
- Splunk Cloud Platform
- Splunk Enterprise — versions 8.2, 9.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- advisory.splunk.com/advisories/SVD-2023-0802 (Vendor Advisory)
- research.splunk.com/application/8e8a86d5-f323-4567-95be-8e817e2baee6/ (Vendor Advisory)
Frequently asked questions
- What is CVE-2023-40593?
- CVE-2023-40593 is a medium-severity vulnerability in Splunk, classified under Uncontrolled Resource Consumption. CVSS score: 6.3/10. Published 2023-08-30.
- How severe is CVE-2023-40593?
- Medium severity. CVSS v3 base score is 6.3 out of 10.
- Is CVE-2023-40593 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.