Threat Intelligence Database

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.

Kerberos is a network authentication system, which can improve the security of your network by eliminating the insecure practice of sending passwords over the network in unencrypted form. It allows clients and servers to authenticate to each other with the help of a trusted third party, the Kerberos key distribution center (KDC). Security Fix(es): * krb5: overflow when calculating ulog block size (CVE-2025-24528) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section. Additional Changes: For detailed information on changes in this release, see the Red Hat Enterprise Linux 9 Release Notes linked from the References section.

Multiple memory leak vulnerabilities have been identified in the krb5 component of Red Hat Enterprise Linux versions 8 and 9. These vulnerabilities affect various parts of the Kerberos implementation, including RPC and GSSAPI modules. The issues have been assigned CVE identifiers CVE-2024-26458, CVE-2024-26461, and CVE-2024-26462. Red Hat has released security updates addressing these memory leaks. The security impact is rated as low to moderate, and no known exploits are reported in the wild.