Vulnerability Description
An Improper Input Validation vulnerability in DataImportHandler of Apache Solr allows an attacker to provide a Windows UNC path resulting in an SMB network call being made from the Solr host to another host on the network. If the attacker has wider access to the network, this may lead to SMB attacks, which may result in: * The exfiltration of sensitive data such as OS user hashes (NTLM/LM hashes), * In case of misconfigured systems, SMB Relay Attacks which can lead to user impersonation on SMB Shares or, in a worse-case scenario, Remote Code Execution This issue affects all Apache Solr versions prior to 8.11.1. This issue only affects Windows.
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Apache | Solr | < 8.11.1 |
| Microsoft | Windows | - |
Related Weaknesses (CWE)
References
- https://security.netapp.com/advisory/ntap-20220114-0005/Third Party Advisory
- https://solr.apache.org/security.html#cve-2021-44548-apache-solr-information-disVendor Advisory
- https://security.netapp.com/advisory/ntap-20220114-0005/Third Party Advisory
- https://solr.apache.org/security.html#cve-2021-44548-apache-solr-information-disVendor Advisory
FAQ
What is CVE-2021-44548?
CVE-2021-44548 is a vulnerability with a CVSS score of 9.8 (CRITICAL). An Improper Input Validation vulnerability in DataImportHandler of Apache Solr allows an attacker to provide a Windows UNC path resulting in an SMB network call being made from the Solr host to anothe...
How severe is CVE-2021-44548?
CVE-2021-44548 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2021-44548?
Check the references section above for vendor advisories and patch information. Affected products include: Apache Solr, Microsoft Windows.