CVE-2021-3553 Server-Side Request Forgery in EPPUpdateService remote config file (VA-9825)

Medium 5.3 Published 24 Nov 2021 Updated 17 Sep 2024

An attacker can exploit an SSRF vulnerability in Bitdefender Endpoint Security Tools to use the endpoint as a proxy for remote hosts.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2021-3553?

CVE-2021-3553 is a medium-severity server-side request forgery vulnerability in Bitdefender Endpoint Security Tools, published on 24 Nov 2021. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

A Server-Side Request Forgery (SSRF) vulnerability in the EPPUpdateService of Bitdefender Endpoint Security Tools allows an attacker to use the Endpoint Protection relay as a proxy for any remote host. This issue affects: Bitdefender Endpoint Security Tools versions prior to 6.6.27.390; versions prior to 7.1.2.33. Bitdefender Unified Endpoint for Linux versions prior to 6.2.21.160. Bitdefender GravityZone versions prior to 6.24.1-1.

Weakness: CWE-918

Which versions are affected by CVE-2021-3553?

It affects 2 products.

Products include Bitdefender Endpoint Security Tools, Bitdefender Gravityzone.

How do I fix CVE-2021-3553?

No fix has been published for CVE-2021-3553 yet. Limit exposure of the affected software until one is available.

Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.

Is CVE-2021-3553 being exploited?

There is no known exploitation of CVE-2021-3553 in the wild and no public exploit code.

Sources

Also known as GHSA-6x2g-jp65-m547.