Apache Impala: path traversal

Why it is Yellow

• CVSS 6.5 medium

References

• https://lists.apache.org/thread.html/m7qbho4j1g4v7kx7pbk4z2n8p9nx6bqn
• http://www.openwall.com/lists/oss-security/2026/10/07/20

Original description

Path traversal of 'trusted_jar_paths' in Impala 4.5.2 allows an attacker-controlled JAR to be loaded via a relative path where the prefix matches a path specified in 'trusted_jar_paths'. The startup flag 'trusted_jar_paths' references URIs for loading files from local or remote filesystems. Path traversal can't override the schema, but can result in loading a JAR that has been uploaded to a different location in that filesystem via Impala DDLs such as CREATE DATA SOURCE and CREATE TABLE. Path traversal can only be used if a trusted path exists, so this attack requires 'trusted_jar_paths' have a non-empty value configured by the Impala admin. Users are recommended to upgrade to version 4.5.3, which fixes this issue.