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Date: Fri, 7 Aug 2020 17:27:04 -0700
From: Ian Maxon <>
Subject: [CVE-2020-9479] Directory traversal vulnerability in Apache AsterixDB

CVE-2020-9479: AsterixDB directory traversal
Severity: Important

Vendor: The Apache Software Foundation

Versions Affected: None released, git commits
580b81aa5e8888b8e1b0620521a1c9680e54df73 to
28c0ee84f1387ab5d0659e9e822f4e3923ddc22d ,
fixed in 28c0ee84f1387ab5d0659e9e822f4e3923ddc22d and mitigated by
Description: When loading a UDF, a specially crafted zip file could
allow files to be placed outside of the UDF deployment directory.

Mitigation: Upgrade unreleased versions past
28c0ee84f1387ab5d0659e9e822f4e3923ddc22d or to 0.9.5 .
Don't allow untrusted access to the UDF endpoint.

Example: The zip file will contain a directory entry named ".."

Credit: This issue was discovered by Yiming Xiang of NSFOCUS

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