go1.20.3 (released 2023-04-04) includes security fixes to the go/parser,
html/template, mime/multipart, net/http, and net/textproto packages, as well
as bug fixes to the compiler, the linker, the runtime, and the time package.
See the Go 1.20.3 milestone on our issue tracker for details:
https://github.com/golang/go/issues?q=milestone%3AGo1.20.3+label%3ACherryPickApproved
full diff: https://github.com/golang/go/compare/go1.20.2...go1.20.3
Further details from the announcement on the mailing list:
We have just released Go versions 1.20.3 and 1.19.8, minor point releases.
These minor releases include 4 security fixes following the security policy:
- go/parser: infinite loop in parsing
Calling any of the Parse functions on Go source code which contains `//line`
directives with very large line numbers can cause an infinite loop due to
integer overflow.
Thanks to Philippe Antoine (Catena cyber) for reporting this issue.
This is CVE-2023-24537 and Go issue https://go.dev/issue/59180.
- html/template: backticks not treated as string delimiters
Templates did not properly consider backticks (`) as Javascript string
delimiters, and as such did not escape them as expected. Backticks are
used, since ES6, for JS template literals. If a template contained a Go
template action within a Javascript template literal, the contents of the
action could be used to terminate the literal, injecting arbitrary Javascript
code into the Go template.
As ES6 template literals are rather complex, and themselves can do string
interpolation, we've decided to simply disallow Go template actions from being
used inside of them (e.g. "var a = {{.}}"), since there is no obviously safe
way to allow this behavior. This takes the same approach as
github.com/google/safehtml. Template.Parse will now return an Error when it
encounters templates like this, with a currently unexported ErrorCode with a
value of 12. This ErrorCode will be exported in the next major release.
Users who rely on this behavior can re-enable it using the GODEBUG flag
jstmpllitinterp=1, with the caveat that backticks will now be escaped. This
should be used with caution.
Thanks to Sohom Datta, Manipal Institute of Technology, for reporting this issue.
This is CVE-2023-24538 and Go issue https://go.dev/issue/59234.
- net/http, net/textproto: denial of service from excessive memory allocation
HTTP and MIME header parsing could allocate large amounts of memory, even when
parsing small inputs.
Certain unusual patterns of input data could cause the common function used to
parse HTTP and MIME headers to allocate substantially more memory than
required to hold the parsed headers. An attacker can exploit this behavior to
cause an HTTP server to allocate large amounts of memory from a small request,
potentially leading to memory exhaustion and a denial of service.
Header parsing now correctly allocates only the memory required to hold parsed
headers.
Thanks to Jakob Ackermann (@das7pad) for discovering this issue.
This is CVE-2023-24534 and Go issue https://go.dev/issue/58975.
- net/http, net/textproto, mime/multipart: denial of service from excessive resource consumption
Multipart form parsing can consume large amounts of CPU and memory when
processing form inputs containing very large numbers of parts. This stems from
several causes:
mime/multipart.Reader.ReadForm limits the total memory a parsed multipart form
can consume. ReadForm could undercount the amount of memory consumed, leading
it to accept larger inputs than intended. Limiting total memory does not
account for increased pressure on the garbage collector from large numbers of
small allocations in forms with many parts. ReadForm could allocate a large
number of short-lived buffers, further increasing pressure on the garbage
collector. The combination of these factors can permit an attacker to cause an
program that parses multipart forms to consume large amounts of CPU and
memory, potentially resulting in a denial of service. This affects programs
that use mime/multipart.Reader.ReadForm, as well as form parsing in the
net/http package with the Request methods FormFile, FormValue,
ParseMultipartForm, and PostFormValue.
ReadForm now does a better job of estimating the memory consumption of parsed
forms, and performs many fewer short-lived allocations.
In addition, mime/multipart.Reader now imposes the following limits on the
size of parsed forms:
Forms parsed with ReadForm may contain no more than 1000 parts. This limit may
be adjusted with the environment variable GODEBUG=multipartmaxparts=. Form
parts parsed with NextPart and NextRawPart may contain no more than 10,000
header fields. In addition, forms parsed with ReadForm may contain no more
than 10,000 header fields across all parts. This limit may be adjusted with
the environment variable GODEBUG=multipartmaxheaders=.
Thanks to Jakob Ackermann for discovering this issue.
This is CVE-2023-24536 and Go issue https://go.dev/issue/59153.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
While we currently do not provide an option to specify the snapshotter to use
for individual containers (we may want to add this option in future), currently
it already is possible to configure the snapshotter in the daemon configuration,
which could (likely) cause issues when changing and restarting the daemon.
This patch updates some code-paths that have the container available to use
the snapshotter that's configured for the container (instead of the default
snapshotter configured).
There are still code-paths to be looked into, and a tracking ticket as well as
some TODO's were added for those.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
Previously, the AWSLogs driver attempted to implement
non-blocking itself. Non-blocking is supposed to
implemented solely by the Docker RingBuffer that
wraps the log driver.
Please see issue and explanation here:
https://github.com/moby/moby/issues/45217
Signed-off-by: Wesley Pettit <wppttt@amazon.com>
Prevent the daemon from erroring out if daemon.json contains default
network options for network drivers aside from bridge. Configuring
defaults for the bridge driver previously worked by coincidence because
the unrelated CLI flag '--bridge' exists.
Signed-off-by: Cory Snider <csnider@mirantis.com>
Closing stdin of a container or exec (a.k.a.: task or process) has been
somewhat broken ever since support for ContainerD 1.0 was introduced
back in Docker v17.11: the error returned from the CloseIO() call was
effectively ignored due to it being assigned to a local variable which
shadowed the intended variable. Serendipitously, that oversight
prevented a data race. In my recent refactor of libcontainerd, I
corrected the variable shadowing issue and introduced the aforementioned
data race in the process.
Avoid deadlocking when closing stdin without swallowing errors or
introducing data races by calling CloseIO() synchronously if the process
handle is available, falling back to an asynchronous close-and-log
strategy otherwise. This solution is inelegant and complex, but looks to
be the best that could be done without changing the libcontainerd API.
Signed-off-by: Cory Snider <csnider@mirantis.com>
- use apiClient for api-clients to reduce shadowing (also more "accurate")
- use "ctr" instead of "container"
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
Attestation manifests have an OCI image media type, which makes them
being listed like they were a separate platform supported by the image.
Don't use `images.Platforms` and walk the manifest list ourselves
looking for all manifests that are an actual image manifest.
Signed-off-by: Paweł Gronowski <pawel.gronowski@docker.com>
commit 3c69b9f2c5 replaced these functions
and types with github.com/moby/patternmatcher. That commit has shipped with
docker 23.0, and BuildKit v0.11 no longer uses the old functions, so we can
remove these.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
The 'Deprecated:' line in NewClient's doc comment was not in a new
paragraph, so GoDoc, linters, and IDEs were unaware that it was
deprecated. The package documentation also continued to reference
NewClient. Update the doc comments to finish documenting that NewClient
is deprecated.
Signed-off-by: Cory Snider <csnider@mirantis.com>
Distribution source labels don't store port of the repository. If the
content was obtained from repository 172.17.0.2:5000 then its
corresponding label will have a key "containerd.io/distribution.source.172.17.0.2".
Fix the check in canBeMounted to ignore the :port part of the domain.
This also removes the check which prevented insecure repositories to use
cross-repo mount - the real cause was the mismatch in domain comparison.
Signed-off-by: Paweł Gronowski <pawel.gronowski@docker.com>
Distribution source label can specify multiple repositories - in this
case value is a comma separated list of source repositories.
Signed-off-by: Paweł Gronowski <pawel.gronowski@docker.com>
Previously the labels would be appended for content that was pushed
even if subsequent pushes of other content failed.
Change the behavior to only append the labels if the whole push
operation succeeded.
Signed-off-by: Paweł Gronowski <pawel.gronowski@docker.com>
Handler is called in parallel and modifying a map without
synchronization is a race condition.
Signed-off-by: Paweł Gronowski <pawel.gronowski@docker.com>
This is a follow-up of 48ad9e1. This commit removed the function
ElectInterfaceAddresses from utils_linux.go but not their FreeBSD &
Windows counterpart. As these functions are never called, they can be
safely removed.
Signed-off-by: Albin Kerouanton <albinker@gmail.com>
The ExtDNS2 field was added in
aad1632c15
to migrate existing state from < 1.14 to a new type. As it's unlikely
that installations still have state from before 1.14, rename ExtDNS2
back to ExtDNS and drop the migration code.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
Co-authored-by: Cory Snider <csnider@mirantis.com>
Signed-off-by: Cory Snider <csnider@mirantis.com>
- make jobs.Add accept a list of jobs, so that we don't have to
repeatedly lock/unlock the mutex
- rename some variables that collided with imports or types
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
This implements `docker push` under containerd image store. When
pushing manifest lists that reference a content which is not present in
the local content store, it will attempt to perform the cross-repo mount
the content if possible.
Considering this scenario:
```bash
$ docker pull docker.io/library/busybox
```
This will download manifest list and only host platform-specific
manifest and blobs.
Note, tagging to a different repository (but still the same registry) and pushing:
```bash
$ docker tag docker.io/library/busybox docker.io/private-repo/mybusybox
$ docker push docker.io/private-repo/mybusybox
```
will result in error, because the neither we nor the target repository
doesn't have the manifests that the busybox manifest list references
(because manifests can't be cross-repo mounted).
If for some reason the manifests and configs for all other platforms
would be present in the content store, but only layer blobs were
missing, then the push would work, because the blobs can be cross-repo
mounted (only if we push to the same registry).
Signed-off-by: Paweł Gronowski <pawel.gronowski@docker.com>
Push the reference parsing from repo and tag names into the api and pass
a reference object to the ImageService.
Signed-off-by: Paweł Gronowski <pawel.gronowski@docker.com>
