vulnerability
Red Hat: CVE-2025-3576: krb5: Kerberos RC4-HMAC-MD5 Checksum Vulnerability Enabling Message Spoofing via MD5 Collisions (Multiple Advisories)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 7 | (AV:N/AC:M/Au:N/C:N/I:C/A:N) | Apr 15, 2025 | Jun 5, 2025 | Aug 13, 2025 |
Severity
7
CVSS
(AV:N/AC:M/Au:N/C:N/I:C/A:N)
Published
Apr 15, 2025
Added
Jun 5, 2025
Modified
Aug 13, 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.
Solutions
no-fix-redhat-rpm-packageredhat-upgrade-krb5-debuginforedhat-upgrade-krb5-debugsourceredhat-upgrade-krb5-develredhat-upgrade-krb5-devel-debuginforedhat-upgrade-krb5-libsredhat-upgrade-krb5-libs-debuginforedhat-upgrade-krb5-pkinitredhat-upgrade-krb5-pkinit-debuginforedhat-upgrade-krb5-serverredhat-upgrade-krb5-server-debuginforedhat-upgrade-krb5-server-ldapredhat-upgrade-krb5-server-ldap-debuginforedhat-upgrade-krb5-workstationredhat-upgrade-krb5-workstation-debuginforedhat-upgrade-libkadm5redhat-upgrade-libkadm5-debuginfo
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