CVE-2021-23427

Arbitrary File Write via Archive Extraction (Zip Slip)

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Published Sep 1, 2021 CVSS 3.1 · 8.6 High EPSS 1.4% KEV · Not listed

Description

This affects all versions of package elFinder.NetCore. The ExtractAsync function within the FileSystem is vulnerable to arbitrary extraction due to insufficient validation.

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

n/a

elFinder.NetCore

affected

Version	Status	Constraints
`0`	affected	< unspecified

Configuration 1 [-]

cpe:2.3:a:elfinder.netcore_project:elfinder.netcore:*:*:*:*:*:*:*:*

No data.

No data available yet.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source	ID	Title
EUVD	EUVD-2021-2127	This affects all versions of package elFinder.NetCore. The ExtractAsync function within the FileSystem is vulnerable to arbitrary extraction due to insufficient validation.
Github GHSA	GHSA-wmpm-fq7r-jq56	Imporoper path validation in elFinder.NetCore

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact Low

Availability Impact Low

User Interaction None

No CVSS v3.0

Access Vector Network

Access Complexity Low

Authentication None

Confidentiality Impact Partial

Integrity Impact Partial

Availability Impact Partial

This CVE is not in the KEV list.

Exploit prediction score: 1.4% (1.431% probability within 30 days)

Key SSVC decision points have not yet been added.

References

Link	Providers
https://github.com/gordon-matt/elFinder.NetCore/blob/633da9a4d7d5c9baefd1730ee51bf7af54889600/elFinder.NetCore/Drivers/FileSystem/FileSystemDriver.cs%23L226
https://snyk.io/vuln/SNYK-DOTNET-ELFINDERNETCORE-1567778

History

No history.

Subscriptions

Elfinder.netcore Project Elfinder.netcore

Weaknesses

CWE-22

Sources

CVE record Updated: Sep 16, 2024, 4:38 PM

Status: PUBLISHED
Assigner: snyk
Published: Sep 1, 2021, 2:30 PM
Updated: Sep 16, 2024, 4:38 PM
Reserved: Jan 8, 2021, 12:00 AM

View source JSON

Vulnrichment No data

No data.

NVD Updated: Jun 17, 2026, 3:38 AM

Status: Modified
Published: Sep 1, 2021, 3:15 PM
Modified: Jun 17, 2026, 3:38 AM

View source JSON

Red Hat No data

No data.

OpenCVE enrichment No data

No data.

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