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Elasticsearch Remote Code Execution

Elasticsearch Remote Code Execution
Posted Jul 17, 2015
Authored by Kevin Kluge

Elasticsearch versions prior to 1.6.1 are vulnerable to an engineered attack on its transport protocol that enables remote code execution.

tags | advisory, remote, code execution, protocol
advisories | CVE-2015-5377
SHA-256 | c7d03a23059a26c14cfa85c4a73e1ef9e80899f3676ade54bb247e68d5444f6b

Elasticsearch Remote Code Execution

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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.
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