Elasticsearch 1.6.0 Remote Code Execution

2015.07.17
Credit: cpnrodzc7
Risk: High
Local: No
Remote: Yes
CVE: CVE-2015-3253
CWE: CWE-74


CVSS Base Score: 7.5/10
Impact Subscore: 6.4/10
Exploitability Subscore: 10/10
Exploit range: Remote
Attack complexity: Low
Authentication: No required
Confidentiality impact: Partial
Integrity impact: Partial
Availability impact: Partial

Summary: Elasticsearch versions prior to 1.6.1 are vulnerable to an engineered attack on its transport protocol that enables remote code execution. This issue is related to the Groovy announcement in CVE-2015-3253. Deployments are vulnerable even when Groovy dynamic scripting is disabled. We have been assigned CVE-2015-5377 for this issue. Fixed versions: Version 1.6.1 and 1.7.0 address the vulnerability. Remediation: Users should upgrade to the 1.6.1 or 1.7.0 release. Users that do not want to upgrade can address the vulnerability by securing the transport protocol port (default 9300) to allow access by only trusted agents. CVSS Overall CVSS score: 5.1 Credits: cpnrodzc7 working with HP's Zero Day Initiative (ZDI) found a similar issue with Elasticsearch.

References:

http://cxsecurity.com/issue/WLB-2015070080


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