313f514fdd
go1.21.3 (released 2023-10-10) includes a security fix to the net/http package. See the Go 1.21.3 milestone on our issue tracker for details: https://github.com/golang/go/issues?q=milestone%3AGo1.21.3+label%3ACherryPickApproved full diff: https://github.com/golang/go/compare/go1.21.2...go1.21.3 From the security mailing: [security] Go 1.21.3 and Go 1.20.10 are released Hello gophers, We have just released Go versions 1.21.3 and 1.20.10, minor point releases. These minor releases include 1 security fixes following the security policy: - net/http: rapid stream resets can cause excessive work A malicious HTTP/2 client which rapidly creates requests and immediately resets them can cause excessive server resource consumption. While the total number of requests is bounded to the http2.Server.MaxConcurrentStreams setting, resetting an in-progress request allows the attacker to create a new request while the existing one is still executing. HTTP/2 servers now bound the number of simultaneously executing handler goroutines to the stream concurrency limit. New requests arriving when at the limit (which can only happen after the client has reset an existing, in-flight request) will be queued until a handler exits. If the request queue grows too large, the server will terminate the connection. This issue is also fixed in golang.org/x/net/http2 v0.17.0, for users manually configuring HTTP/2. The default stream concurrency limit is 250 streams (requests) per HTTP/2 connection. This value may be adjusted using the golang.org/x/net/http2 package; see the Server.MaxConcurrentStreams setting and the ConfigureServer function. This is CVE-2023-39325 and Go issue https://go.dev/issue/63417. This is also tracked by CVE-2023-44487. Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
contrib
The contrib directory contains packages that do not belong in the core containerd packages but still contribute to overall containerd usability.
Package such as Apparmor or Selinux are placed in contrib because they are platform dependent and often require higher level tools and profiles to work.
Packaging and other built tools can be added to contrib to aid in packaging containerd for various distributions.
Testing
Code in the contrib directory may or may not have been tested in the normal test pipeline for core components.