SB2021111915 - Deserialization of Untrusted Data in Sassy Social Share plugin for WordPress

Description

This security bulletin contains information about 1 vulnerability.

1) Deserialization of Untrusted Data (CVE-ID: CVE-2021-39321)

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

CVSSv4: 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

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.

Remediation

Install update from vendor's website.

References

• https://www.wordfence.com/blog/2021/10/vulnerability-patched-in-sassy-social-share-plugin/
• https://www.wordfence.com/vulnerability-advisories/#CVE-2021-39321
• https://plugins.trac.wordpress.org/changeset/2600464/sassy-social-share/trunk/admin/class-sassy-social-share-admin.php