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CVE Record

CVE-2017-7660: Apache Solr uses a PKI based mechanism to secure inter-node communication when security is enabled.

Apache Solr uses a PKI based mechanism to secure inter-node communication when security is enabled. It is possible to create a specially crafted node name that does not exist as part of the cluster and point it to a malicious node. This can trick the nodes in cluster to believe that the malicious node is a member of the cluster. So, if Solr users have enabled BasicAuth authentication mechanism using the BasicAuthPlugin or if the user has implemented a custom Authentication plugin, which does not implement either "HttpClientInterceptorPlugin" or "HttpClientBuilderPlugin", his/her servers are vulnerable to this attack. Users who only use SSL without basic authentication or those who use Kerberos are not affected.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysis

Security readout for executives and security teams

CVE-2017-7660 affects Apache Solr clusters with security enabled. A crafted, non-existent node name could make legitimate nodes trust a malicious node as if it belonged to the cluster. This matters most where Solr protects sensitive indexed data and uses BasicAuth or certain custom authentication plugins. Exposure is likely limited to Apache Solr versions 5.3 through 5.5.4 and 6.0 through 6.5.1 using the affected authentication configurations. Internet exposure increases urgency, but the provided sources do not state whether remote unauthenticated exploitation is possible. Treat this as a targeted Solr cluster trust issue. Prioritize externally reachable or sensitive-data Solr clusters using affected versions and BasicAuth/custom authentication. Do not assume all Solr instances are vulnerable without configuration validation. Mitigation focus: Inventory Solr clusters running affected 5.x and 6.x versions.; Check Apache and vendor guidance for fixed releases or supported upgrade paths.; Avoid affected BasicAuthPlugin configurations on vulnerable versions where feasible..

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Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

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2Source links

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Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
Apache Software FoundationApache Solr5.3 to 5.5.4, 6.0 to 6.5.1Listed
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CWE details

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