CVE-2021-3553: 
Bitdefender Endpoint Security Tools vulnerability analysis and mitigation

A Server-Side Request Forgery (SSRF) vulnerability was discovered in the EPPUpdateService component of Bitdefender Endpoint Security Tools. The vulnerability, identified as CVE-2021-3553, affects versions prior to 6.6.27.390 and was disclosed on November 24th, 2021. This security flaw allows attackers to potentially use the Endpoint Protection relay as a proxy for any remote host (Bitdefender Advisory).

The vulnerability has been assigned a CVSS v3.1 score of 5.3, indicating a moderate severity level. The CVSS vector string is CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N, which suggests that the vulnerability requires network access, has high attack complexity, needs no privileges, requires user interaction, and can potentially lead to high confidentiality impact without affecting integrity or availability (Bitdefender Advisory).

The vulnerability allows an attacker to leverage the Endpoint Protection relay as a proxy to access remote hosts, potentially compromising the confidentiality of system information. The CVSS scoring indicates high confidentiality impact, though integrity and availability are not affected (Bitdefender Advisory).

Bitdefender addressed this vulnerability through an automatic update to version 6.6.27.390 of the Endpoint Security Tools. Users should ensure their systems are updated to this version or later to mitigate the risk (Bitdefender Advisory).