Deserialization of Untrusted Data in WordPress Social Sharing Plugin - Sassy Social Share - CVE-2021-39321

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Main Vulnerability Database Vulnerabilities #VU58266

Deserialization of Untrusted Data in WordPress Social Sharing Plugin - Sassy Social Share - CVE-2021-39321

Published: November 19, 2021


Vulnerability identifier: #VU58266
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2021-39321
CWE-ID: CWE-502
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vendor: Team Heateor
Affected software:
WordPress Social Sharing Plugin - Sassy Social Share

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 in the "import_config" function in the ~/admin/class-sassy-social-share-admin.php file. A remote authenticated 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-2021-39321

Install updates from vendor's website.

Sources