Actively exploited in the wild
Laravel Deserialization of Untrusted Data Vulnerability
Laravel - Laravel Framework · Listed in the CISA KEV since 2024-01-16. This indicates confirmed attacks in production environments.
Required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
CVE-2018-15133
HighCVSS 8.1KEVSummary
In Laravel Framework through 5.5.40 and 5.6.x through 5.6.29, remote code execution might occur as a result of an unserialize call on a potentially untrusted X-XSRF-TOKEN value. This involves the decrypt method in Illuminate/Encryption/Encrypter.php and PendingBroadcast in gadgetchains/Laravel/RCE/3/chain.php in phpggc. The attacker must know the application key, which normally would never occur, but could happen if the attacker previously had privileged access or successfully accomplished a previous attack.
Risk Assessment
If the application key is leaked, an attacker could remotely execute arbitrary code on the server, leading to full compromise of the application and data.
Recommendation
Upgrade Laravel to version 5.5.41 or 5.6.30 or later, and protect the application key and rotate it if compromise is suspected.
Other vulnerabilities in Laravel Framework
Original NVD description (English source)
In Laravel Framework through 5.5.40 and 5.6.x through 5.6.29, remote code execution might occur as a result of an unserialize call on a potentially untrusted X-XSRF-TOKEN value. This involves the decrypt method in Illuminate/Encryption/Encrypter.php and PendingBroadcast in gadgetchains/Laravel/RCE/3/chain.php in phpggc. The attacker must know the application key, which normally would never occur, but could happen if the attacker previously had privileged access or successfully accomplished a previous attack.