CVE-2024-3596
Publication date 9 July 2024
Last updated 8 November 2024
Ubuntu priority
RADIUS Protocol under RFC 2865 is susceptible to forgery attacks by a local attacker who can modify any valid Response (Access-Accept, Access-Reject, or Access-Challenge) to any other response using a chosen-prefix collision attack against MD5 Response Authenticator signature.
Mitigation
Disable the use of RADIUS/UDP and RADIUS/TCP - instead RADIUS/TLS or RADIUS/DTLS should be used.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| freeradius | 24.10 oracular |
Not affected
|
| 24.04 LTS noble |
Fixed 3.2.5+dfsg-3~ubuntu24.04.1
|
|
| 22.04 LTS jammy |
Fixed 3.0.26~dfsg~git20220223.1.00ed0241fa-0ubuntu3.3
|
|
| 20.04 LTS focal |
Fixed 3.0.20+dfsg-3ubuntu0.4
|
|
| 18.04 LTS bionic |
Vulnerable
|
|
| 16.04 LTS xenial |
Vulnerable
|
|
| krb5 | 24.10 oracular |
Needs evaluation
|
| 24.04 LTS noble |
Needs evaluation
|
|
| 22.04 LTS jammy |
Needs evaluation
|
|
| 20.04 LTS focal |
Needs evaluation
|
|
| 18.04 LTS bionic |
Needs evaluation
|
|
| 16.04 LTS xenial |
Needs evaluation
|
|
| 14.04 LTS trusty |
Needs evaluation
|
Notes
alexmurray
RADIUS clients may also be affected
mdeslaur
This vulnerability is known as Blast-RADIUS Added krb5 to this CVE as libkrad in krb5 does not contain support for the Message-Authenticator, preventing this vulnerability from being addressed between libkrad and a radius server. Note: libkrad0 binary package is in the universe pocket.
Patch details
| Package | Patch details |
|---|---|
| freeradius |
|
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score |
8.1 · High
|
| Attack vector | Network |
| Attack complexity | High |
| Privileges required | None |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity impact | High |
| Availability impact | High |
| Vector | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
References
Related Ubuntu Security Notices (USN)
- USN-7055-1
- FreeRADIUS vulnerability
- 3 October 2024