CVE-2017-9792 Information

Description

In Apache Impala (incubating) before 2.10.0 a malicious user with \ALTER\ permissions on an Impala table can access any other Kudu table data by altering the table properties to make it \external\ and then changing the underlying table mapping to point to other Kudu tables. This violates and works around the authorization requirement that creating a Kudu external table via Impala requires an \ALL\ privilege at the server scope. This privilege requirement for \CREATE\ commands is enforced to precisely avoid this scenario where a malicious user can change the underlying Kudu table mapping. The fix is to enforce the same privilege requirement for \ALTER\ commands that would make existing non-external Kudu tables external.

CVSS Vector

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

Reference

http://www.securityfocus.com/bid/101173 https://issues.apache.org/jira/browse/IMPALA-5638 https://lists.apache.org/thread.html/74a163df0cdefcd738c8d18821e69aa69eed2ba5384c0cc255d15c4b@3Cannounce.apache.org3E

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

HIGH

Base Score

NONE

Base Severity

6.5