| Name | CVE-2019-17185 |
| 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. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | ELA-809-1 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| freeradius (PTS) | jessie, jessie (lts) | 2.2.5+dfsg-0.2+deb8u1 | fixed |
| stretch (security) | 3.0.12+dfsg-5+deb9u1 | vulnerable |
| stretch (lts), stretch | 3.0.17+dfsg-1.1+deb9u1 | fixed |
| buster (security), buster, buster (lts) | 3.0.17+dfsg-1.1+deb10u2 | fixed |
| bullseye | 3.0.21+dfsg-2.2+deb11u1 | fixed |
| bookworm | 3.2.1+dfsg-4+deb12u1 | fixed |
| sid, trixie | 3.2.5+dfsg-3 | fixed |
The information below is based on the following data on fixed versions.
Notes
[stretch] - freeradius <no-dsa> (Minor issue)
[jessie] - freeradius <not-affected> (Vulnerable code not present; EAP-pwd module introduced in later version)
https://github.com/FreeRADIUS/freeradius-server/commit/6b522f8780813726799e6b8cf0f1f8e0ce2c8ebf