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Yaklang Plugin's Fuzztag Component Allows Unauthorized Local File Reading

High severity GitHub Reviewed Published Aug 14, 2023 in yaklang/yaklang • Updated Nov 6, 2023

Package

gomod github.com/yaklang/yaklang (Go)

Affected versions

< 1.2.4-sp2

Patched versions

1.2.4-sp2

Description

Impact

The Yak Engine has been found to contain a local file inclusion (LFI) vulnerability. This vulnerability allows attackers to include files from the server's local file system through the web application. When exploited, this can lead to the unintended exposure of sensitive data, potential remote code execution, or other security breaches. Users utilizing versions of the Yak Engine prior to 1.2.4-sp1 are impacted.

Patches

The vulnerability has been addressed and patched. Users are advised to upgrade to Yak Engine version 1.2.4-sp1 immediately. The patch can be viewed and reviewed at this PR: yaklang/yaklang#295，yaklang/yaklang#296

Workarounds

Currently, the most effective solution is to upgrade to the patched version of Yak Engine (1.2.4-sp1). Users are also advised to avoid exposing vulnerable versions to untrusted input and to closely monitor any unexpected server behavior until they can upgrade.

References

For more details on the vulnerability and the corresponding patch, please visit the following link:

References

@VillanCh VillanCh published to yaklang/yaklang Aug 14, 2023
Published by the National Vulnerability Database Aug 14, 2023
Published to the GitHub Advisory Database Aug 15, 2023
Reviewed Aug 15, 2023
Last updated Nov 6, 2023

Severity

High

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS score

0.356%
(73rd percentile)

Weaknesses

CVE ID

CVE-2023-40023

GHSA ID

GHSA-xvhg-w6qc-m3qq

Source code

Credits

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