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CVE-2024-3596

Publication date 9 July 2024

Last updated 6 November 2024

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

8.1 · High

Score breakdown

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.

Read the notes from the security team

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
23.10 mantic Ignored end of life, was needed
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. See the following for more information: https://issues.redhat.com/browse/RHEL-55453 Note: libkrad0 binary package is in the universe pocket.

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

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