PT-2017-14623 · Taylor Otwell · Laravel

Published 2017-11-20 · Updated 2026-01-03 · CVE-2017-16894

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Name of the Vulnerable Software and Affected Versions Laravel framework versions prior to 5.5.22

Description The issue allows remote attackers to obtain sensitive information, such as externally usable passwords, via a direct request for the /.env URI. This is due to the writeNewEnvironmentFileWith function in src/Illuminate/Foundation/Console/KeyGenerateCommand.php, which uses file put contents without restricting the .env permissions.

Recommendations For Laravel framework versions prior to 5.5.22, update to version 5.5.22 or later to resolve the issue. As a temporary workaround, consider restricting access to the /.env file to minimize the risk of exploitation.

Exploit

Fix

Information Disclosure

Weakness Enumeration

CWE-200

Related Identifiers

CVE-2017-16894

Affected Products

Laravel

References · 7

• 🔥 https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/unix/http/laravel_token_unserialize_exec.rb · Exploit
• 🔥 https://exploit-db.com/exploits/47129 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2017-16894 · Security Note
• https://osv.dev/vulnerability/CVE-2017-16894 · Vendor Advisory
• https://twitter.com/finnwea/status/967709791442341888 · Note
• http://whiteboyz.xyz/laravel-env-file-vuln.html · Note
• http://packetstormsecurity.com/files/153641/PHP-Laravel-Framework-Token-Unserialize-Remote-Command-Execution.html · Note