CVE-2020-9479

Name: CVE-2020-9479
Creator: NVD / NIST
Published: 2021-03-01T16:15:12.917+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.5/10EPSS 1.98%

Last modified Jun 17, 2026

CVE-2020-9479 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. 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. EPSS estimates a 1.98% chance of exploitation in the next 30 days.

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

Metrics

CVSS 3.1

5.5/10

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

EPSS Probability

1.98%

78.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-22

Affected Software

Vendor	Product	Versions
Apache	Asterixdb	< 0.9.5

References

https://lists.apache.org/thread.html/r4cc9cc9c54573babf821c31d5d410fb260d1cd416dc1b225d587be9b%40%3Cdev.asterixdb.apache.org%3E
https://www.openwall.com/lists/oss-security/2020/08/08/2Mailing List, Third Party Advisory
https://lists.apache.org/thread.html/r4cc9cc9c54573babf821c31d5d410fb260d1cd416dc1b225d587be9b%40%3Cdev.asterixdb.apache.org%3E
https://www.openwall.com/lists/oss-security/2020/08/08/2Mailing List, Third Party Advisory

Timeline

Published: Mar 1, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-9479?

How severe is CVE-2020-9479?

CVE-2020-9479 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 1.98% probability of exploitation in the next 30 days.

How do I fix CVE-2020-9479?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-9479?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST