CVE-2018-11409 — SPLUNK
MEDIUMCVE-2018-11409 is a medium-severity (CVSS 5.3) Information Exposure vulnerability in splunk splunk. 4 public exploit references exist, so weaponization risk is real. No vendor fix is recorded yet; mitigation options are listed below.
Splunk through 7.0.1 allows information disclosure by appending __raw/services/server/info/server-info?output_mode=json to a query, as demonstrated by discovering a license key.
EPSS Exploitation Probability
Probability of exploitation in the next 30 days, from FIRST.org EPSS.
How urgent is this, really
CVE-2018-11409 by exploitation likelihood (EPSS) against impact (CVSS). Outside the shaded patch-first corner.
Where this sits among everything scored
Of 394,415 CVEs with a current EPSS score, this one falls in the ≥ 90% band (highlighted). Counts from FIRST.org, log-scaled.
Description
Splunk through 7.0.1 allows information disclosure by appending __raw/services/server/info/server-info?output_mode=json to a query, as demonstrated by discovering a license key.
Affected Products
splunksplunkResearch use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.
Splunk < 7.0.1 - Information Disclosure
by KoF2002 · Jun 8, 2018
Detection & mitigation playbook
Vendor / applianceDetect
Inventory every splunk splunk deployment and check each version against the affected-products list above.
Remediation status
No patch has shipped for CVE-2018-11409 yet — track the splunk splunk advisory for a fixed release and apply the workarounds below in the meantime.
Mitigate without a patch
Assume what was exposed is already known: rotate any credential, token or key that the affected component could return, restrict the endpoint to callers that genuinely need it, and strip sensitive fields from responses and error output at the boundary rather than relying on the client not to read them. Alongside that, restrict the management interface to trusted networks and apply the vendor's recommended configuration mitigations.
How to detect CVE-2018-11409
A community-maintained Nuclei template exists for this CVE. You can scan for it directly:
nuclei -id cve-2018-11409 -u https://target- Template
- Splunk <=7.0.1 - Information Disclosure
- Severity
- medium
- Impact
- An attacker can exploit this vulnerability to gain unauthorized access to sensitive information.
- Remediation
- Upgrade Splunk to a version higher than 7.0.1 to mitigate the vulnerability.
Template by ProjectDiscovery nuclei-templates (harshbothra_), MIT licensed. View the full template. Scan only systems you are authorised to test.
Frequently Asked Questions
Is CVE-2018-11409 being exploited in your environment?
Detect and block the exploit chain at execution, on systems you cannot patch yet.