In correlation with the end of life (EOL) for MKE 3.7.x, maintenance of this documentation set was discontinued as of 2025-AUG-29. Click here for the latest MKE 3.x version documentation.

Security information

The MKE 3.7.8 patch release focuses exclusively on CVE mitigation. To this end, the following middleware component versions have been upgraded to resolve vulnerabilities in MKE:

• [MKE-11477] cri-dockerd 0.3.13

• [MKE-11428] Interlock 3.3.13

• [MKE-11482] Blackbox Exporter 0.25.0

• [MKE-11482] Alert Manager 0.27.0

The following table details the specific CVEs addressed, including which images are affected per CVE.

CVE	Status	Image mitigated	Problem details from upstream
CVE-2024-3651	Resolved	ucp-sf-notifier	Internationalized Domain Names in Applications (IDNA) vulnerable to denial of service from specially crafted inputs to idna.encode
CVE-2023-45288	Resolved	ucp-interlock ucp-interlock-extension	An attacker may cause an HTTP/2 endpoint to read arbitrary amounts of header data by sending an excessive number of CONTINUATION frames. Maintaining HPACK state requires parsing and processing all HEADERS and CONTINUATION frames on a connection. When a request’s headers exceed MaxHeaderBytes, no memory is allocated to store the excess headers, but they are still parsed. This permits an attacker to cause an HTTP/2 endpoint to read arbitrary amounts of header data, all associated with a request which is going to be rejected. These headers can include Huffman-encoded data which is significantly more expensive for the receiver to decode than for an attacker to send. The fix sets a limit on the amount of excess header frames we will process before closing a connection.