janhoy commented on a change in pull request #1572:
URL: https://github.com/apache/lucene-solr/pull/1572#discussion_r439730789
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File path: solr/core/src/java/org/apache/solr/core/CoreContainer.java
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@@ -1259,6 +1277,20 @@ public SolrCore create(String coreName, Path
instancePath, Map<String, String> p
}
}
+ /**
+ * Checks that the given path is relative to SOLR_HOME, SOLR_DATA_HOME,
coreRootDirectory or one of the paths
+ * specified in solr.xml's allowPaths element.
+ * @param path path to check
+ * @throws SolrException if path is outside allowed paths
+ */
+ public void assertPathAllowed(Path path) throws SolrException {
+ if (path.normalize().equals(path) && !path.isAbsolute()) return;
Review comment:
You are right. We need a more thorough check
* Disallow relative paths starting with "."
* Always `normalize()` the path before `toAbsolutePath()` to catch the
`/var/solr/../../etc` case, else that example would return true for
`startsWith("/var/solr")`
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