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CVE-2019-10743 is a Zip Slip vulnerability in the Go mholt/archiver library's unarchive functionality. Crafted ZIP archive entries containing relative path-traversal components were concatenated with the selected extraction directory without sufficient containment validation. Extraction could therefore resolve and write files outside the intended destination directory. The issue was fixed in archiver 3.3.2.
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1 valid exploit after Mallory filtered fakes, detection scripts, and README-only repos.
This repository is a proof-of-concept (POC) demonstration of the Zip Slip vulnerability (CVE-2019-10743) in the mholt/archiver Go package (versions >=3.0.0, <3.3.2). The main exploit is implemented as a vulnerable Go web server (main.go) that accepts ZIP file uploads via the /upload HTTP endpoint and extracts them using the vulnerable archiver package, without validating file paths. This allows attackers to craft ZIP files with path traversal entries (e.g., '../../../etc/passwd'), resulting in arbitrary file overwrite outside the intended extraction directory. The repository includes: - main.go: The vulnerable server implementation, exposing endpoints '/' (upload form) and '/upload' (ZIP file upload and extraction). - test_exploit.py: A Python script that creates a malicious ZIP file with a path traversal filename and uploads it to the server to demonstrate exploitation. - docker-run.sh and Dockerfile: Scripts and configuration to build and run the vulnerable server in a Docker container. - README.md: Documentation explaining the vulnerability, usage instructions, and mitigation steps. The exploit's main capability is arbitrary file overwrite on the server via a crafted ZIP file, which can lead to remote code execution or system compromise. The attack vector is network-based, requiring the attacker to send a malicious ZIP file to the /upload endpoint. The server listens on http://localhost:8080 by default, and stores files in ./uploads and ./extracted directories. The exploit is a POC and does not include weaponized payloads, but demonstrates the core vulnerability and its impact.
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A Zip Slip path traversal vulnerability in a Go-based archive library that allows extraction of files outside the target folder via ../ sequences in ZIP filenames.
Zip Slip directory traversal vulnerability in a Go-based archive library allowing extraction of files outside the target folder.
Zip Slip directory traversal in a Go archive library during ZIP extraction.
A Zip Slip path traversal vulnerability in a Go-based archive library that allows extraction of files outside the target directory via ../ sequences in zip entry filenames.
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