Vulnerability · Published Dec 23, 2021 · Assigned by apache
CVE-2021-44548Apache Solr information disclosure vulnerability through DataImportHandler
Critical 9.8
In plain English
A critical-severity improper input validation in Apache Solr from Apache Software Foundation. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 5.2% (higher than 93% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Maven | org.apache.solr:solr-parent | 8.11.1 | GHSA-pccr-q7v9-5f27 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Apache Software Foundation | Apache Solr | unspecified – before 8.11.1 |
Weakness: CWE-40, CWE-20