Security information¶
Updated the following middleware component versions to resolve vulnerabilities in MKE:
[MKE-11023] Calico 3.28.0
The following table details the specific CVEs addressed, including which images are affected per CVE.
CVE |
Status |
Image mitigated |
Problem details from upstream |
|---|---|---|---|
Resolved |
|
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. |
|
Resolved |
|
nscd: Stack-based buffer overflow in netgroup cache. If the Name Service Cache Daemon’s (nscd) fixed size cache is exhausted by client requests then a subsequent client request for netgroup data may result in a stack-based buffer overflow. This flaw was introduced in glibc 2.15 when the cache was added to nscd. This vulnerability is only present in the nscd binary. |
|
Resolved |
|
nscd: Null pointer crashes after notfound response. If the Name Service Cache Daemon’s (nscd) cache fails to add a not-found netgroup response to the cache, the client request can result in a null pointer dereference. This flaw was introduced in glibc 2.15 when the cache was added to nscd. This vulnerability is only present in the nscd binary. |