What’s Vulnerable › Vulnerabilities

CVE-2019-17185

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-03-21 · updated 2026-06-17
• Weakness: CWE-662

Description

In FreeRADIUS 3.0.x before 3.0.20, the EAP-pwd module used a global OpenSSL BN_CTX instance to handle all handshakes. This mean multiple threads use the same BN_CTX instance concurrently, resulting in crashes when concurrent EAP-pwd handshakes are initiated. This can be abused by an adversary as a Denial-of-Service (DoS) attack.

Affected products

• freeradius: from 3.0.0 before 3.0.20 — fixed in 3.0.20
• openSUSE Leap: 15.1

How to fix

Upgrade to a fixed version: freeradius 3.0.20. Check the vendor advisory for mitigations.

References

• http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00039.html
• https://freeradius.org/security/
• https://github.com/FreeRADIUS/freeradius-server/releases/tag/release_3_0_20
• http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00039.html
• https://freeradius.org/security/
• https://github.com/FreeRADIUS/freeradius-server/releases/tag/release_3_0_20

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