#VU27346 Resource management error in FreeRADIUS - CVE-2019-17185
Published: April 27, 2020
Vulnerability identifier: #VU27346
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2019-17185
CWE-ID: CWE-399
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
FreeRADIUS
FreeRADIUS
Software vendor:
FreeRADIUS Server Project
FreeRADIUS Server Project
Description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to the EAP-pwd module uses 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. A remote attacker can perform multiple login attempts and crash the daemon.
Remediation
Install updates from vendor's website.