vulnerability
Ubuntu: USN-7542-1 (CVE-2025-3576): Kerberos vulnerability
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 7 | (AV:N/AC:M/Au:N/C:N/I:C/A:N) | Apr 15, 2025 | May 29, 2025 | Apr 16, 2026 |
Severity
7
CVSS
(AV:N/AC:M/Au:N/C:N/I:C/A:N)
Published
Apr 15, 2025
Added
May 29, 2025
Modified
Apr 16, 2026
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.
Solutions
ubuntu-pro-upgrade-libk5crypto3ubuntu-pro-upgrade-libkrb5-3ubuntu-upgrade-libk5crypto3ubuntu-upgrade-libkrb5-3
References
- CVE-2025-3576
- https://attackerkb.com/topics/CVE-2025-3576
- CWE-328
- EUVD-EUVD-2025-10925
- UBUNTU-USN-7542-1
- https://access.redhat.com/security/cve/CVE-2025-3576
- https://bugzilla.redhat.com/show_bug.cgi?id=2359465
- https://euvd.enisa.europa.eu/vulnerability/EUVD-2025-10925
- https://ubuntu.com/security/notices/USN-7542-1
- https://www.cve.org/CVERecord?id=CVE-2025-3576
Rapid7 Labs
2026 Global Threat Landscape Report
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