High severity · published Aug 9, 2018
CVE-2018-15133
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
In wildKEV
8.1
CVSS
76.6%
EPSS
Yes
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)76.6% · higher than 100% of CVEs
Exploited in the wildYes
CISA KEVListed Jan 16, 2024
Federal remediation dueFeb 6, 2024
Ransomware campaign useNot known
Affected products
Which versions
LA
Laravel · Laravel
through 5.5.40; 5.6.0 through 5.6.29 · source: NVD
LF
Laravel Framework · Laravel
All versions, or not specified · source: KEV
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2018-15133
CVE.org
https://www.cve.org/CVERecord?id=CVE-2018-15133
CISA KEV catalogue
https://www.cisa.gov/known-exploited-vulnerabilities-catalog
Exploit
http://packetstormsecurity.com/files/153641/PHP-Laravel-Framework-Token-Unserialize-Remote-Command-Execution.html
Vendor Advisory
https://laravel.com/docs/5.6/upgrade#upgrade-5.6.30
US Government Resource
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-15133
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