Deserialization of Untrusted Data in Pimcore Pimcore

1) Deserialization of Untrusted Data

EUVDB-ID: #VU31121

Risk: High

CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-10867

CWE-ID: CWE-502 - Deserialization of Untrusted Data

Exploit availability: No

Description

The vulnerability allows a remote authenticated user to execute arbitrary code.

An issue was discovered in Pimcore before 5.7.1. An attacker with classes permission can send a POST request to /admin/class/bulk-commit, which will make it possible to exploit the unserialize function when passing untrusted values in the data parameter to bundles/AdminBundle/Controller/Admin/DataObject/ClassController.php.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Pimcore: 5.7.0

External links

http://packetstormsecurity.com/files/152667/Pimcore-Unserialize-Remote-Code-Execution.html
http://www.rapid7.com/db/modules/exploit/multi/http/pimcore_unserialize_rce
http://blog.certimetergroup.com/it/articolo/security/polyglot_phar_deserialization_to_rce
http://github.com/pimcore/pimcore/commit/38a29e2f4f5f060a73974626952501cee05fda73
http://snyk.io/vuln/SNYK-PHP-PIMCOREPIMCORE-173998
http://www.exploit-db.com/exploits/46783/

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.