Auth bypass in Apache Solr
CVE-2017-7660
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.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.
EPSS exploit prediction
EPSS: 0.056 (92.7th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 93rd percentile — 92.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.056 · newest: 0.056 · change: 0.000
Affected products
- Apache Solr — versions 5.3.0, 5.3.1, 5.3.2
- Apache Software Foundation Solr — versions 6.0 to 6.5.1, 5.3 to 5.5.4
Weakness classification (CWE)
References
- security.netapp.com/advisory/ntap-20181127-0003/
- mail-archives.us.apache.org/mod_mbox/www-announce/201707.mbox/<CAOOKt53EgrybaD+… (Vendor Advisory, mailing-list, Mailing List)
- www.securityfocus.com/bid/99485 (VDB Entry, Third Party Advisory, vdb-entry)
Frequently asked questions
- What is CVE-2017-7660?
- CVE-2017-7660 is a high-severity vulnerability in Apache Solr, classified under Improper Authentication. CVSS score: 7.5/10. Published 2017-07-07.
- How severe is CVE-2017-7660?
- High severity. CVSS v3 base score is 7.5 out of 10.