CVE-2025-3576
Published: April 15, 2025Last modified: June 18, 2025
Description
A vulnerability in the MIT Kerberos implementation allows GSSAPI-protected messages using RC4-HMAC-MD5 to be spoofed due to weaknesses in the MD5 checksum design. If RC4 is preferred over stronger encryption types, an attacker could exploit MD5 collisions to forge message integrity codes. This may lead to unauthorized message tampering.
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 5.9 |
| Attack Vector | NETWORK |
| Attack complexity | HIGH |
| Privileges required | NONE |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | NONE |
| Integrity impact | HIGH |
| Availability impact | NONE |
| Vector | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N |
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | krb5 | Unknown (1.20.1-r0) |
| Stream | krb5 | Unknown (1.20.1-r2) |
References
- https://access.redhat.com/errata/RHSA-2025:8411
- https://access.redhat.com/errata/RHSA-2025:9418
- https://access.redhat.com/errata/RHSA-2025:9430
- https://access.redhat.com/security/cve/CVE-2025-3576
- https://bugzilla.redhat.com/show_bug.cgi?id=2359465
- https://lists.debian.org/debian-lts-announce/2025/05/msg00047.html