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The vulnerability arises due to improper parsing and validation logic handling dependency specifications within the `shards-audit` utility for Crystal applications. When parsing external dependency declarations or lock files, lack of strict sanitization allows maliciously crafted packages or malicious version strings to introduce path traversal or erroneous dependency resolutions. This vulnerability enables attackers to manipulate build definitions, resulting in potential arbitrary file overwrite or supply chain compromise during the automated auditing and dependency installation workflow.
DailyCVE Form:
Platform: Crystal
Version: < 0.1.0
Vulnerability : Parsing Flaw
Severity: Medium
date: 2024-06-15
Prediction: 2024-06-20
What Undercode Say:
Shards-audit parses configuration entries directly without performing necessary structural validation checks on input parameters. Security boundaries must be strictly enforced when dealing with external manifest specifications to prevent unexpected parsing execution paths.
Bash Commands and Codes:
git clone https://github.com/hahwul/shards-audit.git cd shards-audit crystal build src/shards-audit.cr ./shards-audit --check
How Exploit: (Educational Purposes!)
Malicious dependency declaration example dependencies: malicious_pkg: github: "attacker/repo" version: "../../../etc/cron.d/malicious"
Protection: from this CVE
Update `shards-audit` to version 0.1.0 or higher where strict input sanitization and secure path verification checks are implemented for all parsed dependency arguments.
Impact:
Successful exploitation allows attackers to manipulate package resolution metrics, potentially leading to unauthorized system access, malicious package substitution, or integrity compromise of the underlying build environment.
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Sources:
Reported By: github.com
Extra Source Hub:
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