app: inbound: add fuzzer#977
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hawkw merged 5 commits intolinkerd:mainfrom Apr 15, 2021
DavidKorczynski:main
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Signed-off-by: davkor <[email protected]>
Signed-off-by: davkor <[email protected]>
Signed-off-by: davkor <[email protected]>
olix0r
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Apr 13, 2021
Signed-off-by: davkor <[email protected]>
hawkw
reviewed
Apr 13, 2021
Signed-off-by: davkor <[email protected]>
olix0r
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Apr 14, 2021
hawkw
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This looks like a good start to me!
I'd love to see fuzzing for more variables in the future --- it would be nice to be able to produce more potentially-malicious requests. But, we can always keep adding more fuzzers, and this looks like a great start!
| fuzz_target!(|inp: TransportHeaderSpec| { | ||
| if let Ok(uri) = std::str::from_utf8(&inp.uri[..]) { | ||
| if let Ok(header_name) = std::str::from_utf8(&inp.header_name[..]) { | ||
| if let Ok(header_value) = std::str::from_utf8(&inp.header_value[..]) { |
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should we also be testing behavior with header values that are not valid UTF-8? we can always add this in a follow-up.
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Great stuff! I agree, and I will get this up in the near future. It would be nice to do it a bit incrementally though so we can see how things work when clusterfuzz starts putting a lot of compute power on it. |
olix0r
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Apr 21, 2021
This release primarily improves protocol detection error messages in the admin server so that logs clearly indicate when the client expected a different TLS server identity than that of the running proxy. A number of internal improvements have been made, especially eliminating some potential runtime panics detected by oss-fuzz. It is not expected that these panics could be triggered in typical cluster configurations. --- * discover: replace `linkerd-channel` with `tokio-util` `PollSender` (linkerd/linkerd2-proxy#969) * replace `linkerd-channel` with `tokio-stream` (linkerd/linkerd2-proxy#970) * concurrency-limit: use `tokio-util`'s `PollSemaphore` (linkerd/linkerd2-proxy#968) * http: Do not fail fuzz tests when all IO is not read (linkerd/linkerd2-proxy#973) * transport: Fix orig-dst compilation on non-Linux targets (linkerd/linkerd2-proxy#974) * Update trust-dns to fix possible panic (linkerd/linkerd2-proxy#975) * addr: fix `to_http_authority` panic with IPv6 (linkerd/linkerd2-proxy#976) * outbound: skip logical stacks when no profile is discovered (linkerd/linkerd2-proxy#963) * split: change traffic splits to require a profile (linkerd/linkerd2-proxy#964) * inbound: only build profile route stacks when a profile is resolved (linkerd/linkerd2-proxy#966) * profiles: make receiver param in `route_request` non-optional (linkerd/linkerd2-proxy#967) * outbound: move target types into stack modules (linkerd/linkerd2-proxy#971) * outbound: only build logical stacks for profiles with logical addrs (linkerd/linkerd2-proxy#972) * app: inbound: add fuzzer (linkerd/linkerd2-proxy#977) * admin: Fail connections when HTTP detection fails (linkerd/linkerd2-proxy#979) * reduce error boilerplate with `thiserror` (linkerd/linkerd2-proxy#980) * app: inbound: fuzzer: generalise fuzzers and solve coverage build (linkerd/linkerd2-proxy#978) * admin: Assume meshed connections are HTTP/2 (linkerd/linkerd2-proxy#982) * chore: Fix deprecations on nightly (linkerd/linkerd2-proxy#983)
olix0r
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May 12, 2021
This release simplifies internals so that endpoint-forwarding logic is completely distinct from handling of load balanced services. The ingress-mode outbound proxy has been simplified to *require* the `l5d-dst-override` header and to fail non-HTTP communication. This ensures that the ingress-mode proxy does not unexpectedly revert to insecure communication. Finally, a regression was recently introduced that caused all proxy logs to be output with ANSI control characters. Logs are now output in plaintext by default --- * discover: replace `linkerd-channel` with `tokio-util` `PollSender` (linkerd/linkerd2-proxy#969) * replace `linkerd-channel` with `tokio-stream` (linkerd/linkerd2-proxy#970) * concurrency-limit: use `tokio-util`'s `PollSemaphore` (linkerd/linkerd2-proxy#968) * http: Do not fail fuzz tests when all IO is not read (linkerd/linkerd2-proxy#973) * transport: Fix orig-dst compilation on non-Linux targets (linkerd/linkerd2-proxy#974) * Update trust-dns to fix possible panic (linkerd/linkerd2-proxy#975) * addr: fix `to_http_authority` panic with IPv6 (linkerd/linkerd2-proxy#976) * outbound: skip logical stacks when no profile is discovered (linkerd/linkerd2-proxy#963) * split: change traffic splits to require a profile (linkerd/linkerd2-proxy#964) * inbound: only build profile route stacks when a profile is resolved (linkerd/linkerd2-proxy#966) * profiles: make receiver param in `route_request` non-optional (linkerd/linkerd2-proxy#967) * outbound: move target types into stack modules (linkerd/linkerd2-proxy#971) * outbound: only build logical stacks for profiles with logical addrs (linkerd/linkerd2-proxy#972) * app: inbound: add fuzzer (linkerd/linkerd2-proxy#977) * admin: Fail connections when HTTP detection fails (linkerd/linkerd2-proxy#979) * reduce error boilerplate with `thiserror` (linkerd/linkerd2-proxy#980) * app: inbound: fuzzer: generalise fuzzers and solve coverage build (linkerd/linkerd2-proxy#978) * admin: Assume meshed connections are HTTP/2 (linkerd/linkerd2-proxy#982) * chore: Fix deprecations on nightly (linkerd/linkerd2-proxy#983) * fuzz: Add logging to fuzz targets (linkerd/linkerd2-proxy#985) * fuzz: don't panic when the proxy closes the conn (linkerd/linkerd2-proxy#986) * Commit lock files for fuzzers (linkerd/linkerd2-proxy#984) * fuzz: allow client requests to fail (linkerd/linkerd2-proxy#989) * tower: update dependency to 0.4.7 (linkerd/linkerd2-proxy#990) * outbound: Make the Endpoint::logical_addr field optional (linkerd/linkerd2-proxy#991) * trace: explicitly disable ANSI terminal colors (linkerd/linkerd2-proxy#994) * ingress: Require the l5d-dst-override header (linkerd/linkerd2-proxy#992) * outbound: Do not support TCP-forwarding in ingress-mode (linkerd/linkerd2-proxy#995) * Decouple tcp forward stack from Endpoint target (linkerd/linkerd2-proxy#996) * Pickup linkerd-await wrapper in docker build (linkerd/linkerd2-proxy#999) * docs: Add fuzzing report (linkerd/linkerd2-proxy#1000) * tests: Use io::Error in mocked connector (linkerd/linkerd2-proxy#1001) * outbound: Decouple endpoint & logical stacks (linkerd/linkerd2-proxy#1002)
olix0r
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May 18, 2021
This release simplifies internals so that endpoint-forwarding logic is completely distinct from handling of load balanced services. The ingress-mode outbound proxy has been simplified to *require* the `l5d-dst-override` header and to fail non-HTTP communication. This ensures that the ingress-mode proxy does not unexpectedly revert to insecure communication. Finally, a regression was recently introduced that caused all proxy logs to be output with ANSI control characters. Logs are now output in plaintext by default --- * discover: replace `linkerd-channel` with `tokio-util` `PollSender` (linkerd/linkerd2-proxy#969) * replace `linkerd-channel` with `tokio-stream` (linkerd/linkerd2-proxy#970) * concurrency-limit: use `tokio-util`'s `PollSemaphore` (linkerd/linkerd2-proxy#968) * http: Do not fail fuzz tests when all IO is not read (linkerd/linkerd2-proxy#973) * transport: Fix orig-dst compilation on non-Linux targets (linkerd/linkerd2-proxy#974) * Update trust-dns to fix possible panic (linkerd/linkerd2-proxy#975) * addr: fix `to_http_authority` panic with IPv6 (linkerd/linkerd2-proxy#976) * outbound: skip logical stacks when no profile is discovered (linkerd/linkerd2-proxy#963) * split: change traffic splits to require a profile (linkerd/linkerd2-proxy#964) * inbound: only build profile route stacks when a profile is resolved (linkerd/linkerd2-proxy#966) * profiles: make receiver param in `route_request` non-optional (linkerd/linkerd2-proxy#967) * outbound: move target types into stack modules (linkerd/linkerd2-proxy#971) * outbound: only build logical stacks for profiles with logical addrs (linkerd/linkerd2-proxy#972) * app: inbound: add fuzzer (linkerd/linkerd2-proxy#977) * admin: Fail connections when HTTP detection fails (linkerd/linkerd2-proxy#979) * reduce error boilerplate with `thiserror` (linkerd/linkerd2-proxy#980) * app: inbound: fuzzer: generalise fuzzers and solve coverage build (linkerd/linkerd2-proxy#978) * admin: Assume meshed connections are HTTP/2 (linkerd/linkerd2-proxy#982) * chore: Fix deprecations on nightly (linkerd/linkerd2-proxy#983) * fuzz: Add logging to fuzz targets (linkerd/linkerd2-proxy#985) * fuzz: don't panic when the proxy closes the conn (linkerd/linkerd2-proxy#986) * Commit lock files for fuzzers (linkerd/linkerd2-proxy#984) * fuzz: allow client requests to fail (linkerd/linkerd2-proxy#989) * tower: update dependency to 0.4.7 (linkerd/linkerd2-proxy#990) * outbound: Make the Endpoint::logical_addr field optional (linkerd/linkerd2-proxy#991) * trace: explicitly disable ANSI terminal colors (linkerd/linkerd2-proxy#994) * ingress: Require the l5d-dst-override header (linkerd/linkerd2-proxy#992) * outbound: Do not support TCP-forwarding in ingress-mode (linkerd/linkerd2-proxy#995) * Decouple tcp forward stack from Endpoint target (linkerd/linkerd2-proxy#996) * Pickup linkerd-await wrapper in docker build (linkerd/linkerd2-proxy#999) * docs: Add fuzzing report (linkerd/linkerd2-proxy#1000) * tests: Use io::Error in mocked connector (linkerd/linkerd2-proxy#1001) * outbound: Decouple endpoint & logical stacks (linkerd/linkerd2-proxy#1002)
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The focus of this PR is adding a n end-to-end style fuzzer.
Notice I had to disable denying of warnings in two places in order to compile this.
The fuzzer is largely inspired by
unmeshed_http1_hello_worldlinkerd2-proxy/linkerd/app/inbound/src/http/tests.rs
Line 49 in 863ef23