What’s Vulnerable › Vulnerabilities

CVE-2020-9479: unzip directory traversal

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.0% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-03-01 · updated 2026-06-17
• Weakness: CWE-22

Description

When loading a UDF, a specially crafted zip file could allow files to be placed outside of the UDF deployment directory. This issue affected Apache AsterixDB unreleased builds between commits 580b81aa5e8888b8e1b0620521a1c9680e54df73 and 28c0ee84f1387ab5d0659e9e822f4e3923ddc22d. Note: this CVE may be REJECTed as the issue did not affect any released versions of Apache AsterixDB

Affected products

• Apache Software Foundation Apache AsterixDB: before 0.9.5 — fixed in 0.9.5

How to fix

Upgrade to a fixed version: Apache Software Foundation Apache AsterixDB 0.9.5. Check the vendor advisory for mitigations.

References

• https://lists.apache.org/thread.html/r4cc9cc9c54573babf821c31d5d410fb260d1cd416dc1b225d587be9b%40%3Cdev.asterixdb.apache.org%3E
• https://www.openwall.com/lists/oss-security/2020/08/08/2
• https://lists.apache.org/thread.html/r4cc9cc9c54573babf821c31d5d410fb260d1cd416dc1b225d587be9b%40%3Cdev.asterixdb.apache.org%3E
• https://www.openwall.com/lists/oss-security/2020/08/08/2

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