CVE-2021-3552 Insufficient validation on regular expression in EPPUpdateService config file (VA-9825)

What is CVE-2021-3552?

CVE-2021-3552 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, with no action from the victim.

Official description

A Server-Side Request Forgery (SSRF) vulnerability in the EPPUpdateService component of Bitdefender Endpoint Security Tools allows an attacker to proxy requests to the relay server. This issue affects: Bitdefender Endpoint Security Tools versions prior to 6.6.27.390; versions prior to 7.1.2.33. Bitdefender GravityZone 6.24.1-1.

Weakness: CWE-918

Which versions are affected by CVE-2021-3552?

It affects 2 products.

Products include Bitdefender Endpoint Security Tools, Bitdefender Gravityzone.

How do I fix CVE-2021-3552?

No fix has been published for CVE-2021-3552 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-2021-3552 being exploited?

There is no known exploitation of CVE-2021-3552 in the wild and no public exploit code.

Other vulnerabilities in Bitdefender Endpoint Security Tools

• CVE-2021-3554 Improper Access Control vulnerability in the patchesUpdate API Critical 9.0
• CVE-2021-3576 Privilege escalation via SeImpersonatePrivilege High 7.8
• CVE-2021-3579 Incorrect Default Permissions vulnerability in bdservicehost.exe and Vulnerability.Scan.exe High 7.8
• CVE-2022-0677 Improper Handling of Length Parameter Inconsistency vulnerability in Bitdefender Update Server (VA-10144) High 7.5
• CVE-2021-3485 Improper Input Validation in Bitdefender Endpoint Security Tools for Linux Medium 6.4

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-pr6v-cc4g-cpxj.