Deserialization of Untrusted Data in Squiz Matrix - CVE-2019-19373
Published: December 20, 2019
Vulnerability identifier: #VU23779
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2019-19373
CWE-ID: CWE-502
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Squiz.net
Affected software:
Squiz Matrix
Squiz Matrix
Detailed vulnerability description
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to insecure input validation when processing serialized data passed via the "page_remote_content_[pageid]_sq_remote_input_file_names" POST parameter in "packages/cms/page_templates/page_remote_content/page_remote_content.inc". A remote attacker can pass specially crafted data to the application and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
How to mitigate CVE-2019-19373
Install updates from vendor's website.
Sources
- http://packetstormsecurity.com/files/155671/Squiz-Matrix-CMS-5.5.x.x-Code-Execution-Information-Disclosure.html
- http://seclists.org/fulldisclosure/2019/Dec/34
- https://matrix.squiz.net/releases/5.5/5.5.3.3
- https://zxsecurity.co.nz/wp-content/uploads/2019/12/ZX%20Security%20Advisory%20-%20Squiz%20Matrix%20CMS%20-%20Multiple%20Vulnerabilities.pdf