CVE-2019-17185
Published: 21 March 2020
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.
Priority
Status
| Package | Release | Status |
|---|---|---|
|
freeradius Launchpad, Ubuntu, Debian |
bionic |
Released
(3.0.16+dfsg-1ubuntu3.2)
|
| eoan |
Ignored
(end of life)
|
|
| focal |
Not vulnerable
(3.0.20+dfsg-3build1)
|
|
| groovy |
Not vulnerable
(3.0.20+dfsg-3build1)
|
|
| hirsute |
Not vulnerable
(3.0.20+dfsg-3build1)
|
|
| impish |
Not vulnerable
(3.0.20+dfsg-3build1)
|
|
| jammy |
Not vulnerable
(3.0.20+dfsg-3build1)
|
|
| kinetic |
Not vulnerable
(3.0.20+dfsg-3build1)
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(3.0.20+dfsg-1)
|
|
| xenial |
Not vulnerable
(code not present)
|
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 7.5 |
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity impact | None |
| Availability impact | High |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
References
- https://github.com/FreeRADIUS/freeradius-server/commit/6b522f8780813726799e6b8cf0f1f8e0ce2c8ebf
- https://freeradius.org/security/
- https://github.com/FreeRADIUS/freeradius-server/releases/tag/release_3_0_20
- https://ubuntu.com/security/notices/USN-5785-1
- https://www.cve.org/CVERecord?id=CVE-2019-17185
- NVD
- Launchpad
- Debian