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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HExploitability: 3.9 | Impact: 3.6Attack Vector: Network
Complexity: Low
Privileges: None
User Interaction: None
Scope: Unchanged
Confidentiality: None
Integrity: None
Availability: High
Affected Packages4 packages
🔴Vulnerability Details
4OSVfreeradius vulnerabilities↗2023-01-04 GHSAGHSA-h63v-34h7-7q42: In FreeRADIUS 3↗2022-05-24 CVEListCVE-2019-17185: In FreeRADIUS 3↗2020-03-21 OSVCVE-2019-17185: In FreeRADIUS 3↗2020-03-21 📋Vendor Advisories
3UbuntuFreeRADIUS vulnerabilities↗2023-01-04 Red Hatfreeradius: eap-pwd: DoS issues due to multithreaded BN_CTX access↗2019-11-14 DebianCVE-2019-17185: freeradius - In FreeRADIUS 3.0.x before 3.0.20, the EAP-pwd module used a global OpenSSL BN_C...↗2019 💬Community
2BugzillaCVE-2019-17185 freeradius: eap-pwd: DoS issues due to multithreaded BN_CTX access [fedora-all]↗2020-03-24 BugzillaCVE-2019-17185 freeradius: eap-pwd: DoS issues due to multithreaded BN_CTX access↗2020-03-24