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CVE Record

CVE-2020-9479: unzip directory traversal

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

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysislow

Security readout for executives and security teams

Plain-English summary

This issue concerns Apache AsterixDB development builds, not released versions. A crafted UDF zip could place files outside the intended deployment directory. The source bundle notes the CVE may be rejected because released AsterixDB versions were not affected.

Executive priority

Low priority for most organizations because released versions are not identified as affected. Prioritize only if the business runs custom or unreleased AsterixDB builds, particularly systems accepting UDF packages from users or third parties.

Technical view

CVE-2020-9479 describes directory traversal during UDF zip loading in Apache AsterixDB git builds between commits 580b81aa5e8888b8e1b0620521a1c9680e54df73 and 28c0ee84f1387ab5d0659e9e822f4e3923ddc22d. No CVSS, CWE, patch advisory, or released affected version is provided.

Likely exposure

Exposure appears limited to organizations running unreleased Apache AsterixDB git builds from the identified commit range, especially where UDF zip loading is enabled or used. Standard released AsterixDB versions are not identified as affected.

Exploitation context

The bundle does not cite active exploitation, public weaponization, or CISA KEV listing. The described impact requires a specially crafted zip during UDF loading, but the sources do not provide environmental prerequisites beyond the affected development builds.

Researcher notes

Evidence is narrow and caveated. The CVE description says it may be rejected because no released AsterixDB versions were affected. Treat this as a development-build path traversal issue unless Apache or CVE sources provide new affected-version data.

Mitigation direction

  • Confirm production is not running affected unreleased AsterixDB git builds.
  • Use released Apache AsterixDB versions where possible.
  • If using custom builds, move outside the affected commit range.
  • Review Apache AsterixDB guidance before accepting UDF zip packages.

Validation and detection

  • Inventory deployed Apache AsterixDB versions and source commit hashes.
  • Check whether any deployment uses unreleased git builds.
  • Review UDF loading workflows and who can submit UDF zip files.
  • Confirm no affected commit-range builds are present in production.
Prepared
Confidence
medium
Sources
4

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

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ATT&CK lookup starting points

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description · low confidence lookup

File access behavior lookup

The CVE wording references file access or upload behavior, so file telemetry and web shell review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.

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cve · low confidence lookup

CVE-2020-9479 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors
0Timeline events
0ADP providers
3Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
Apache Software FoundationApache AsterixDBApache AsterixDB gitListed
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.