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CVE-2019-17185

Status Candidate

Overview

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.

Related Files

Ubuntu Security Notice USN-5785-1
Posted Jan 4, 2023
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5785-1 - It was discovered that FreeRADIUS incorrectly handled multiple EAP-pwd handshakes. An attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 18.04 LTS. Shane Guan discovered that FreeRADIUS incorrectly handled memory when checking unknown SIM option sent by EAP-SIM supplicant. An attacker could possibly use this issue to cause a denial of service on the server. This issue only affected Ubuntu 16.04 ESM, Ubuntu 18.04 LTS and Ubuntu 20.04 LTS.

tags | advisory, denial of service
systems | linux, ubuntu
advisories | CVE-2019-17185, CVE-2022-41860, CVE-2022-41861
SHA-256 | a7bd71afc6329ccb72ca453d36d94ee8283b47169870a31f511a50416559d346
Red Hat Security Advisory 2020-4799-01
Posted Nov 4, 2020
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2020-4799-01 - FreeRADIUS is a high-performance and highly configurable free Remote Authentication Dial In User Service server, designed to allow centralized authentication and authorization for a network. Issues addressed include a denial of service vulnerability.

tags | advisory, remote, denial of service
systems | linux, redhat
advisories | CVE-2019-17185
SHA-256 | 2b7dfbe25aa1e7774a8e9aeff265697961d6572fd8487e818721c8ad738618f8
Red Hat Security Advisory 2020-3984-01
Posted Sep 30, 2020
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2020-3984-01 - FreeRADIUS is a high-performance and highly configurable free Remote Authentication Dial In User Service server, designed to allow centralized authentication and authorization for a network. Issues addressed include denial of service, information leakage, and privilege escalation vulnerabilities.

tags | advisory, remote, denial of service, vulnerability
systems | linux, redhat
advisories | CVE-2019-10143, CVE-2019-13456, CVE-2019-17185
SHA-256 | dd9c1f347716776d653107ebb66d77b11ca9589f569d669463b79f98497f67ed
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