CVE-2020-9479

File write via unchecked ZIP entry path

Published Mar 1, 2021 · Updated Feb 13, 2025

Path traversal in Apache AsterixDB unreleased Git builds allows attackers to write files outside the UDF deployment directory via a crafted ZIP. During UDF loading, ZIP extraction accepts a ".." directory entry and resolves it outside the intended deployment directory. Reachability requires access to the UDF-loading interface and an affected source-built deployment; Apache states that no released version was affected.

CVSS severity5.5
Medium
EPSS probability1.98%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in Apache AsterixDB unreleased Git builds allows attackers to write files outside the UDF deployment directory via a crafted ZIP. During UDF loading, ZIP extraction accepts a ".." directory entry and resolves it outside the intended deployment directory. Reachability requires access to the UDF-loading interface and an affected source-built deployment; Apache states that no released version was affected.

The record

CVE
CVE-2020-9479
Published
Mar 1, 2021
Updated
Feb 13, 2025
Vendor
The Apache Software Foundation
Product
Apache AsterixDB
Classifications
CWE-22
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Mar 1, 2021CVE publishedPublication date reported by the CVE source.
  2. Feb 13, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=Apache AsterixDB git

What conditions does exploitation require?

Attack vectorUnavailable in this record.
Required privilegesUnavailable in this record.

What is affected?

The Apache Software Foundation · Apache AsterixDBversion=Apache AsterixDB git

Published CVSS scores

4.3NIST NVDAV:N/AC:M/Au:N/C:N/I:P/A:N
5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
VectorUnavailable
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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