Summary
Goldberg, Miro Haller, Nadia Heninger, Mike Milano, Dan Shumow, Marc
Stevens, and Adam Suhl discovered that Kerberos incorrectly authenticated
certain responses. An attacker able to intercept communications between a
RADIUS client and server could possibly use this issue to forge responses,
bypass authentication, and access network devices and services.
This update introduces support for the Message-Authenticator attribute in
non-EAP authentication methods for communications between Kerberos and a
RADIUS server.
Fixed packages 6
| Release | Package | Fixed in |
|---|---|---|
| Ubuntu · 20.04 LTS 20.04:LTS | krb5 | 1.17-6ubuntu4.8 |
| Ubuntu · 22.04 LTS 22.04:LTS | krb5 | 1.19.2-2ubuntu0.5 |
| Ubuntu · 24.04 LTS 24.04:LTS | krb5 | 1.20.1-6ubuntu2.3 |
| Ubuntu · Pro 14.04 LTS Pro:14.04:LTS | krb5 | 1.12+dfsg-2ubuntu5.4+esm6 |
| Ubuntu · Pro 16.04 LTS Pro:16.04:LTS | krb5 | 1.13.2+dfsg-5ubuntu2.2+esm6 |
| Ubuntu · Pro 18.04 LTS Pro:18.04:LTS | krb5 | 1.16-2ubuntu0.4+esm3 |
Vulnerabilities 1
-
Critical 9.0
RADIUS Protocol under RFC2865 is vulnerable to forgery attacks.
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 Authen…
References
-
report
https://ubuntu.com/security/CVE-2024-3596