Improper authentication in Apache Solr
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- None · High · None
- Fix status
- Partial Red Hat: 1 without a fix
Attack profile from CVSS 3.0 · NVD. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-287.
Summary
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.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Apache | Apache Solr | 5.3 to 5.5.4; 6.0 to 6.5.1 | — | No fix listed | CNA |
| — | org.apache.solr:solr-core (Maven) | 5.3.0 to before 5.5.5 | 5.5.5 | Patch available | GHSA-c82r-qg3w-q5mv |
| — | org.apache.solr:solr-core (Maven) | 6.0.0 to before 6.6.0 | 6.6.0 | Patch available | GHSA-c82r-qg3w-q5mv |
- Apache Solr VendorApache Affected 5.3 to 5.5.4; 6.0 to 6.5.1 Fixed in — No fix listed CNA
- org.apache.solr:solr-core (Maven) Vendor— Affected 5.3.0 to before 5.5.5 Fixed in 5.5.5 Patch available GHSA-c82r-qg3w-q5mv
- org.apache.solr:solr-core (Maven) Vendor— Affected 6.0.0 to before 6.6.0 Fixed in 6.6.0 Patch available GHSA-c82r-qg3w-q5mv
CPE configurations NVD · 21
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:apache:solr:5.3.0:*:*:*:*:*:*:* | 5.3.0 | Vulnerable | Apache |
| cpe:2.3:a:apache:solr:5.3.1:*:*:*:*:*:*:* | 5.3.1 | Vulnerable | Apache |
| cpe:2.3:a:apache:solr:5.3.2:*:*:*:*:*:*:* | 5.3.2 | Vulnerable | Apache |
| cpe:2.3:a:apache:solr:5.4.0:*:*:*:*:*:*:* | 5.4.0 | Vulnerable | Apache |
| cpe:2.3:a:apache:solr:5.4.1:*:*:*:*:*:*:* | 5.4.1 | Vulnerable | Apache |
| cpe:2.3:a:apache:solr:5.5.0:*:*:*:*:*:*:* | 5.5.0 | Vulnerable | Apache |
| cpe:2.3:a:apache:solr:5.5.1:*:*:*:*:*:*:* | 5.5.1 | Vulnerable | Apache |
| cpe:2.3:a:apache:solr:5.5.2:*:*:*:*:*:*:* | 5.5.2 | Vulnerable | Apache |
| cpe:2.3:a:apache:solr:5.5.3:*:*:*:*:*:*:* | 5.5.3 | Vulnerable | Apache |
| cpe:2.3:a:apache:solr:5.5.4:*:*:*:*:*:*:* | 5.5.4 | Vulnerable | Apache |
- cpe:2.3:a:apache:solr:5.3.0:*:*:*:*:*:*:* Versions 5.3.0 Vulnerable ·Apache
- cpe:2.3:a:apache:solr:5.3.1:*:*:*:*:*:*:* Versions 5.3.1 Vulnerable ·Apache
- cpe:2.3:a:apache:solr:5.3.2:*:*:*:*:*:*:* Versions 5.3.2 Vulnerable ·Apache
- cpe:2.3:a:apache:solr:5.4.0:*:*:*:*:*:*:* Versions 5.4.0 Vulnerable ·Apache
- cpe:2.3:a:apache:solr:5.4.1:*:*:*:*:*:*:* Versions 5.4.1 Vulnerable ·Apache
- cpe:2.3:a:apache:solr:5.5.0:*:*:*:*:*:*:* Versions 5.5.0 Vulnerable ·Apache
- cpe:2.3:a:apache:solr:5.5.1:*:*:*:*:*:*:* Versions 5.5.1 Vulnerable ·Apache
- cpe:2.3:a:apache:solr:5.5.2:*:*:*:*:*:*:* Versions 5.5.2 Vulnerable ·Apache
- cpe:2.3:a:apache:solr:5.5.3:*:*:*:*:*:*:* Versions 5.5.3 Vulnerable ·Apache
- cpe:2.3:a:apache:solr:5.5.4:*:*:*:*:*:*:* Versions 5.5.4 Vulnerable ·Apache
Show 11 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:apache:solr:6.0.0:*:*:*:*:*:*:* | 6.0.0 | Vulnerable | Apache |
| cpe:2.3:a:apache:solr:6.0.1:*:*:*:*:*:*:* | 6.0.1 | Vulnerable | Apache |
| cpe:2.3:a:apache:solr:6.1.0:*:*:*:*:*:*:* | 6.1.0 | Vulnerable | Apache |
| cpe:2.3:a:apache:solr:6.2.0:*:*:*:*:*:*:* | 6.2.0 | Vulnerable | Apache |
| cpe:2.3:a:apache:solr:6.2.1:*:*:*:*:*:*:* | 6.2.1 | Vulnerable | Apache |
| cpe:2.3:a:apache:solr:6.3.0:*:*:*:*:*:*:* | 6.3.0 | Vulnerable | Apache |
| cpe:2.3:a:apache:solr:6.4.0:*:*:*:*:*:*:* | 6.4.0 | Vulnerable | Apache |
| cpe:2.3:a:apache:solr:6.4.1:*:*:*:*:*:*:* | 6.4.1 | Vulnerable | Apache |
| cpe:2.3:a:apache:solr:6.4.2:*:*:*:*:*:*:* | 6.4.2 | Vulnerable | Apache |
| cpe:2.3:a:apache:solr:6.5.0:*:*:*:*:*:*:* | 6.5.0 | Vulnerable | Apache |
| cpe:2.3:a:apache:solr:6.5.1:*:*:*:*:*:*:* | 6.5.1 | Vulnerable | Apache |
- cpe:2.3:a:apache:solr:6.0.0:*:*:*:*:*:*:* Versions 6.0.0 Vulnerable ·Apache
- cpe:2.3:a:apache:solr:6.0.1:*:*:*:*:*:*:* Versions 6.0.1 Vulnerable ·Apache
- cpe:2.3:a:apache:solr:6.1.0:*:*:*:*:*:*:* Versions 6.1.0 Vulnerable ·Apache
- cpe:2.3:a:apache:solr:6.2.0:*:*:*:*:*:*:* Versions 6.2.0 Vulnerable ·Apache
- cpe:2.3:a:apache:solr:6.2.1:*:*:*:*:*:*:* Versions 6.2.1 Vulnerable ·Apache
- cpe:2.3:a:apache:solr:6.3.0:*:*:*:*:*:*:* Versions 6.3.0 Vulnerable ·Apache
- cpe:2.3:a:apache:solr:6.4.0:*:*:*:*:*:*:* Versions 6.4.0 Vulnerable ·Apache
- cpe:2.3:a:apache:solr:6.4.1:*:*:*:*:*:*:* Versions 6.4.1 Vulnerable ·Apache
- cpe:2.3:a:apache:solr:6.4.2:*:*:*:*:*:*:* Versions 6.4.2 Vulnerable ·Apache
- cpe:2.3:a:apache:solr:6.5.0:*:*:*:*:*:*:* Versions 6.5.0 Vulnerable ·Apache
- cpe:2.3:a:apache:solr:6.5.1:*:*:*:*:*:*:* Versions 6.5.1 Vulnerable ·Apache
Remediation
- Fix · GHSA-c82r-qg3w-q5mv org.apache.solr:solr-core (Maven) Fixed in 5.5.5 Advisory →
- Fix · GHSA-c82r-qg3w-q5mv org.apache.solr:solr-core (Maven) Fixed in 6.6.0 Advisory →
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat JBoss Fuse Service Works 6 | Affected | No fix planned: Will not fix |
Not affected: 5 products
- Red Hat JBoss Data Grid 6
- Red Hat JBoss Data Virtualization 6
- Red Hat JBoss Enterprise Application Platform 6
- Red Hat JBoss Fuse 6
- Red Hat JBoss Portal 6
Timeline
- 2026-10-02 Threatist record created from CVE-2017-7660
- 2026-10-03 Alias added: GHSA-c82r-qg3w-q5mv
References
Advisory 2
More Apache Solr vulnerabilities
- TI-2024-30303 Apache Solr: Authentication bypass possible using a fake URL Path ending CVSS 3.1CRITICAL 9.8
- TI-2019-13101 Injection in Apache Solr KEVCVSS 3.1HIGH 7.5
- TI-2019-00170 Code injection in Apache Solr KEVCVSS 3.1HIGH 7.2
- TI-2023-23979 The HTTP/2 protocol allows a denial of service (server resource consumption) because… KEVCVSS 3.1HIGH 7.5
- TI-2021-09240 SSRF vulnerability with the Replication handler CVSS 3.1CRITICAL 9.8
- TI-2017-09354 XML external entity injection in Apache Solr before 7.1 with Apache Lucene before 7.1 CVSS 3.1CRITICAL 9.8
Sources
- CVE-2017-7660 · CVE Program
- CVE-2017-7660 · NVD
- FIRST EPSS
- GHSA-c82r-qg3w-q5mv · GitHub Advisory Database · CC BY 4.0
- CVE-2017-7660 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences