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cmd/go: remote command execution during "go get -u" #29230

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dmitshur opened this issue Dec 13, 2018 · 4 comments

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commented Dec 13, 2018

go get -u downloads, updates, and builds source code. It is not supposed to execute arbitrary code.

The go get command is vulnerable to remote code execution when executed with the -u flag and the import path of a malicious Go package, or a package that imports it directly or indirectly. Specifically, it is only vulnerable in GOPATH mode, but not in module mode (the distinction is documented at https://golang.org/cmd/go/#hdr-Module_aware_go_get). Using custom domains, it’s possible to arrange things so that a Git repository is cloned to a folder named .git by using a vanity import path that ends with /.git. If the Git repository root contains a HEAD file, a config file, an objects directory, a refs directory, with some work to ensure the proper ordering of operations, go get -u can be tricked into considering the parent directory as a repository root, and running Git commands on it. That will use the config file in the original Git repository root for its configuration, and if that config file contains malicious commands, they will execute on the system running go get -u.

Note that forbidding import paths with a .git element might not be sufficient to mitigate this issue, as on certain systems there can be other aliases for VCS state folders.

Thanks to Etienne Stalmans from the Heroku platform security team for discovering and reporting this issue.

This issue is CVE-2018-16873.

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commented Dec 13, 2018

Fixed in Go 1.11.3 by 8954add and 5aedc8a.
Fixed in Go 1.10.6 by 90d609b and 7ef6ee2.

thaJeztah added a commit to thaJeztah/docker that referenced this issue Dec 13, 2018

Bump Golang 1.11.3 (CVE-2018-16875)
go1.11.1 (released 2018/12/14)

- crypto/x509: CPU denial of service in chain validation golang/go#29233
- cmd/go: directory traversal in "go get" via curly braces in import paths golang/go#29231
- cmd/go: remote command execution during "go get -u" golang/go#29230

See the Go 1.11.1 milestone on the issue tracker for details:
https://github.com/golang/go/issues?q=milestone%3AGo1.11.1

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

thaJeztah added a commit to thaJeztah/docker that referenced this issue Dec 13, 2018

Bump Golang 1.10.6 (CVE-2018-16875)
go1.10.6 (released 2018/12/14)

- crypto/x509: CPU denial of service in chain validation golang/go#29233
- cmd/go: directory traversal in "go get" via curly braces in import paths golang/go#29231
- cmd/go: remote command execution during "go get -u" golang/go#29230

See the Go 1.10.6 milestone on the issue tracker for details:
https://github.com/golang/go/issues?q=milestone%3AGo1.10.6

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

thaJeztah added a commit to thaJeztah/docker that referenced this issue Dec 13, 2018

Bump Golang 1.11.3 (CVE-2018-16875)
go1.11.13 (released 2018/12/14)

- crypto/x509: CPU denial of service in chain validation golang/go#29233
- cmd/go: directory traversal in "go get" via curly braces in import paths golang/go#29231
- cmd/go: remote command execution during "go get -u" golang/go#29230

See the Go 1.11.3 milestone on the issue tracker for details:
https://github.com/golang/go/issues?q=milestone%3AGo1.11.3

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
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commented Dec 13, 2018

Change https://golang.org/cl/154101 mentions this issue: cmd/go: reject 'get' of paths containing leading dots or unsupported characters

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commented Dec 13, 2018

Change https://golang.org/cl/154104 mentions this issue: cmd/go/internal/get: relax pathOK check to allow any letter

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commented Dec 13, 2018

Change https://golang.org/cl/154102 mentions this issue: cmd/go/internal/get: reject Windows shortnames as path components

thaJeztah added a commit to thaJeztah/golang-cross that referenced this issue Dec 13, 2018

Bump Golang 1.11.3 (CVE-2018-16875)
go1.11.13 (released 2018/12/14)

- crypto/x509: CPU denial of service in chain validation golang/go#29233
- cmd/go: directory traversal in "go get" via curly braces in import paths golang/go#29231
- cmd/go: remote command execution during "go get -u" golang/go#29230

See the Go 1.11.3 milestone on the issue tracker for details:
https://github.com/golang/go/issues?q=milestone%3AGo1.11.3

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

thaJeztah added a commit to thaJeztah/golang-cross that referenced this issue Dec 14, 2018

Bump Golang 1.10.6 (CVE-2018-16875)
go1.10.6 (released 2018/12/14)

- crypto/x509: CPU denial of service in chain validation golang/go#29233
- cmd/go: directory traversal in "go get" via curly braces in import paths golang/go#29231
- cmd/go: remote command execution during "go get -u" golang/go#29230

See the Go 1.10.6 milestone on the issue tracker for details:
https://github.com/golang/go/issues?q=milestone%3AGo1.10.6

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

thaJeztah added a commit to thaJeztah/cli that referenced this issue Dec 14, 2018

Bump Golang 1.10.6 (CVE-2018-16875)
go1.10.6 (released 2018/12/14)

- crypto/x509: CPU denial of service in chain validation golang/go#29233
- cmd/go: directory traversal in "go get" via curly braces in import paths golang/go#29231
- cmd/go: remote command execution during "go get -u" golang/go#29230

See the Go 1.10.6 milestone on the issue tracker for details:
https://github.com/golang/go/issues?q=milestone%3AGo1.10.6

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

thaJeztah added a commit to thaJeztah/cli that referenced this issue Dec 14, 2018

Bump Golang 1.10.6 (CVE-2018-16875)
go1.10.6 (released 2018/12/14)

- crypto/x509: CPU denial of service in chain validation golang/go#29233
- cmd/go: directory traversal in "go get" via curly braces in import paths golang/go#29231
- cmd/go: remote command execution during "go get -u" golang/go#29230

See the Go 1.10.6 milestone on the issue tracker for details:
https://github.com/golang/go/issues?q=milestone%3AGo1.10.6

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

@gopherbot gopherbot closed this in bc82d7c Dec 14, 2018

gopherbot pushed a commit that referenced this issue Dec 14, 2018

cmd/go/internal/get: reject Windows shortnames as path components
Updates #29230

Change-Id: Ia32d8ec1fc0c4e242f50d8871c0ef3ce315f3c65
Reviewed-on: https://team-review.git.corp.google.com/c/370571
Reviewed-by: Russ Cox <rsc@google.com>
Reviewed-on: https://go-review.googlesource.com/c/154102
Reviewed-by: Bryan C. Mills <bcmills@google.com>

gopherbot pushed a commit that referenced this issue Dec 14, 2018

cmd/go/internal/get: relax pathOK check to allow any letter
This fixes a regression of #18660 with the new path checks.

Updates #29230

Change-Id: I2dd9adab999e7f810e0e746ad8b75ea9622f56e7
Reviewed-on: https://team-review.git.corp.google.com/c/370578
Reviewed-by: Russ Cox <rsc@google.com>
Reviewed-on: https://go-review.googlesource.com/c/154104
Reviewed-by: Bryan C. Mills <bcmills@google.com>

thaJeztah added a commit to thaJeztah/docker-ce-packaging that referenced this issue Dec 14, 2018

Bump Golang 1.11.3 (CVE-2018-16875)
go1.11.13 (released 2018/12/14)

- crypto/x509: CPU denial of service in chain validation golang/go#29233
- cmd/go: directory traversal in "go get" via curly braces in import paths golang/go#29231
- cmd/go: remote command execution during "go get -u" golang/go#29230

See the Go 1.11.3 milestone on the issue tracker for details:
https://github.com/golang/go/issues?q=milestone%3AGo1.11.3

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

thaJeztah added a commit to thaJeztah/docker-ce-packaging that referenced this issue Dec 14, 2018

Bump Golang 1.11.3 (CVE-2018-16875)
go1.11.3 (released 2018/12/14)

- crypto/x509: CPU denial of service in chain validation golang/go#29233
- cmd/go: directory traversal in "go get" via curly braces in import paths golang/go#29231
- cmd/go: remote command execution during "go get -u" golang/go#29230

See the Go 1.11.3 milestone on the issue tracker for details:
https://github.com/golang/go/issues?q=milestone%3AGo1.11.3

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

thaJeztah added a commit to thaJeztah/docker-ce-packaging that referenced this issue Dec 14, 2018

Bump Golang 1.11.3 (CVE-2018-16875)
go1.11.3 (released 2018/12/14)

- crypto/x509: CPU denial of service in chain validation golang/go#29233
- cmd/go: directory traversal in "go get" via curly braces in import paths golang/go#29231
- cmd/go: remote command execution during "go get -u" golang/go#29230

See the Go 1.11.3 milestone on the issue tracker for details:
https://github.com/golang/go/issues?q=milestone%3AGo1.11.3

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

docker-jenkins pushed a commit to docker/docker-ce that referenced this issue Dec 15, 2018

Bump Golang 1.10.6 (CVE-2018-16875)
go1.10.6 (released 2018/12/14)

- crypto/x509: CPU denial of service in chain validation golang/go#29233
- cmd/go: directory traversal in "go get" via curly braces in import paths golang/go#29231
- cmd/go: remote command execution during "go get -u" golang/go#29230

See the Go 1.10.6 milestone on the issue tracker for details:
https://github.com/golang/go/issues?q=milestone%3AGo1.10.6

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
Upstream-commit: 8afe9f422dc0183ce48e1db09189ccbde634080a
Component: engine

docker-jenkins pushed a commit to docker/docker-ce that referenced this issue Dec 15, 2018

Bump Golang 1.10.6 (CVE-2018-16875)
go1.10.6 (released 2018/12/14)

- crypto/x509: CPU denial of service in chain validation golang/go#29233
- cmd/go: directory traversal in "go get" via curly braces in import paths golang/go#29231
- cmd/go: remote command execution during "go get -u" golang/go#29230

See the Go 1.10.6 milestone on the issue tracker for details:
https://github.com/golang/go/issues?q=milestone%3AGo1.10.6

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
Upstream-commit: 6c3a10aaede0cfc54cb5befbb70d6357d08d75b7
Component: cli

docker-jenkins pushed a commit to docker/docker-ce that referenced this issue Dec 17, 2018

Bump Golang 1.11.3 (CVE-2018-16875)
go1.11.3 (released 2018/12/14)

- crypto/x509: CPU denial of service in chain validation golang/go#29233
- cmd/go: directory traversal in "go get" via curly braces in import paths golang/go#29231
- cmd/go: remote command execution during "go get -u" golang/go#29230

See the Go 1.11.3 milestone on the issue tracker for details:
https://github.com/golang/go/issues?q=milestone%3AGo1.11.3

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
Upstream-commit: 517a30b48d7b483e27eb3c3328356a8e83272988
Component: packaging

thaJeztah added a commit to thaJeztah/cli that referenced this issue Dec 19, 2018

Bump Golang 1.11.4 (includes fix for CVE-2018-16875)
go1.11.4 (released 2018/12/14) includes fixes to cgo, the compiler, linker,
runtime, documentation, go command, and the net/http and go/types packages. It
includes a fix to a bug introduced in Go 1.11.3 that broke go get for import
path patterns containing "...".

See the Go 1.11.4 milestone for details:
https://github.com/golang/go/issues?q=milestone%3AGo1.11.4+label%3ACherryPickApproved

go1.11.3 (released 2018/12/14)

- crypto/x509: CPU denial of service in chain validation golang/go#29233
- cmd/go: directory traversal in "go get" via curly braces in import paths golang/go#29231
- cmd/go: remote command execution during "go get -u" golang/go#29230

See the Go 1.11.3 milestone on the issue tracker for details:
https://github.com/golang/go/issues?q=milestone%3AGo1.11.3

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

docker-jenkins pushed a commit to docker/docker-ce that referenced this issue Dec 19, 2018

Bump Golang 1.11.3 (CVE-2018-16875)
go1.11.13 (released 2018/12/14)

- crypto/x509: CPU denial of service in chain validation golang/go#29233
- cmd/go: directory traversal in "go get" via curly braces in import paths golang/go#29231
- cmd/go: remote command execution during "go get -u" golang/go#29230

See the Go 1.11.3 milestone on the issue tracker for details:
https://github.com/golang/go/issues?q=milestone%3AGo1.11.3

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
Upstream-commit: 6b7c093b0de21d574ce120aee891e60187749174
Component: engine

docker-jenkins pushed a commit to docker/docker-ce that referenced this issue Jan 8, 2019

Bump Golang 1.11.4 (includes fix for CVE-2018-16875)
go1.11.4 (released 2018/12/14) includes fixes to cgo, the compiler, linker,
runtime, documentation, go command, and the net/http and go/types packages. It
includes a fix to a bug introduced in Go 1.11.3 that broke go get for import
path patterns containing "...".

See the Go 1.11.4 milestone for details:
https://github.com/golang/go/issues?q=milestone%3AGo1.11.4+label%3ACherryPickApproved

go1.11.3 (released 2018/12/14)

- crypto/x509: CPU denial of service in chain validation golang/go#29233
- cmd/go: directory traversal in "go get" via curly braces in import paths golang/go#29231
- cmd/go: remote command execution during "go get -u" golang/go#29230

See the Go 1.11.3 milestone on the issue tracker for details:
https://github.com/golang/go/issues?q=milestone%3AGo1.11.3

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
Upstream-commit: deaf6e13ab067e6794d20ec980b4ae216b65d07c
Component: cli

thaJeztah added a commit to thaJeztah/docker that referenced this issue Mar 2, 2019

Bump Golang 1.11.3 (CVE-2018-16875)
go1.11.13 (released 2018/12/14)

- crypto/x509: CPU denial of service in chain validation golang/go#29233
- cmd/go: directory traversal in "go get" via curly braces in import paths golang/go#29231
- cmd/go: remote command execution during "go get -u" golang/go#29230

See the Go 1.11.3 milestone on the issue tracker for details:
https://github.com/golang/go/issues?q=milestone%3AGo1.11.3

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
(cherry picked from commit 6b7c093)
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

thaJeztah added a commit to thaJeztah/cli that referenced this issue Mar 4, 2019

Bump Golang 1.11.4 (includes fix for CVE-2018-16875)
go1.11.4 (released 2018/12/14) includes fixes to cgo, the compiler, linker,
runtime, documentation, go command, and the net/http and go/types packages. It
includes a fix to a bug introduced in Go 1.11.3 that broke go get for import
path patterns containing "...".

See the Go 1.11.4 milestone for details:
https://github.com/golang/go/issues?q=milestone%3AGo1.11.4+label%3ACherryPickApproved

go1.11.3 (released 2018/12/14)

- crypto/x509: CPU denial of service in chain validation golang/go#29233
- cmd/go: directory traversal in "go get" via curly braces in import paths golang/go#29231
- cmd/go: remote command execution during "go get -u" golang/go#29230

See the Go 1.11.3 milestone on the issue tracker for details:
https://github.com/golang/go/issues?q=milestone%3AGo1.11.3

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
(cherry picked from commit deaf6e1)
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

thaJeztah added a commit to thaJeztah/cli that referenced this issue Mar 28, 2019

Bump Golang 1.11.4 (includes fix for CVE-2018-16875)
go1.11.4 (released 2018/12/14) includes fixes to cgo, the compiler, linker,
runtime, documentation, go command, and the net/http and go/types packages. It
includes a fix to a bug introduced in Go 1.11.3 that broke go get for import
path patterns containing "...".

See the Go 1.11.4 milestone for details:
https://github.com/golang/go/issues?q=milestone%3AGo1.11.4+label%3ACherryPickApproved

go1.11.3 (released 2018/12/14)

- crypto/x509: CPU denial of service in chain validation golang/go#29233
- cmd/go: directory traversal in "go get" via curly braces in import paths golang/go#29231
- cmd/go: remote command execution during "go get -u" golang/go#29230

See the Go 1.11.3 milestone on the issue tracker for details:
https://github.com/golang/go/issues?q=milestone%3AGo1.11.3

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
(cherry picked from commit deaf6e1)
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

thaJeztah added a commit to thaJeztah/cli that referenced this issue Mar 28, 2019

Bump Golang 1.11.4 (includes fix for CVE-2018-16875)
go1.11.4 (released 2018/12/14) includes fixes to cgo, the compiler, linker,
runtime, documentation, go command, and the net/http and go/types packages. It
includes a fix to a bug introduced in Go 1.11.3 that broke go get for import
path patterns containing "...".

See the Go 1.11.4 milestone for details:
https://github.com/golang/go/issues?q=milestone%3AGo1.11.4+label%3ACherryPickApproved

go1.11.3 (released 2018/12/14)

- crypto/x509: CPU denial of service in chain validation golang/go#29233
- cmd/go: directory traversal in "go get" via curly braces in import paths golang/go#29231
- cmd/go: remote command execution during "go get -u" golang/go#29230

See the Go 1.11.3 milestone on the issue tracker for details:
https://github.com/golang/go/issues?q=milestone%3AGo1.11.3

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
(cherry picked from commit deaf6e1)
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

adhulipa added a commit to adhulipa/docker that referenced this issue Apr 11, 2019

Bump Golang 1.11.3 (CVE-2018-16875)
go1.11.13 (released 2018/12/14)

- crypto/x509: CPU denial of service in chain validation golang/go#29233
- cmd/go: directory traversal in "go get" via curly braces in import paths golang/go#29231
- cmd/go: remote command execution during "go get -u" golang/go#29230

See the Go 1.11.3 milestone on the issue tracker for details:
https://github.com/golang/go/issues?q=milestone%3AGo1.11.3

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

thaJeztah added a commit to thaJeztah/cli that referenced this issue Apr 14, 2019

Bump Golang 1.11.4 (includes fix for CVE-2018-16875)
go1.11.4 (released 2018/12/14) includes fixes to cgo, the compiler, linker,
runtime, documentation, go command, and the net/http and go/types packages. It
includes a fix to a bug introduced in Go 1.11.3 that broke go get for import
path patterns containing "...".

See the Go 1.11.4 milestone for details:
https://github.com/golang/go/issues?q=milestone%3AGo1.11.4+label%3ACherryPickApproved

go1.11.3 (released 2018/12/14)

- crypto/x509: CPU denial of service in chain validation golang/go#29233
- cmd/go: directory traversal in "go get" via curly braces in import paths golang/go#29231
- cmd/go: remote command execution during "go get -u" golang/go#29230

See the Go 1.11.3 milestone on the issue tracker for details:
https://github.com/golang/go/issues?q=milestone%3AGo1.11.3

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
(cherry picked from commit deaf6e1)
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

thaJeztah added a commit to thaJeztah/docker that referenced this issue Apr 14, 2019

Bump Golang 1.11.3 (CVE-2018-16875)
go1.11.13 (released 2018/12/14)

- crypto/x509: CPU denial of service in chain validation golang/go#29233
- cmd/go: directory traversal in "go get" via curly braces in import paths golang/go#29231
- cmd/go: remote command execution during "go get -u" golang/go#29230

See the Go 1.11.3 milestone on the issue tracker for details:
https://github.com/golang/go/issues?q=milestone%3AGo1.11.3

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
(cherry picked from commit 6b7c093)
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

thaJeztah added a commit to thaJeztah/docker that referenced this issue May 20, 2019

Bump Golang 1.11.3 (CVE-2018-16875)
go1.11.13 (released 2018/12/14)

- crypto/x509: CPU denial of service in chain validation golang/go#29233
- cmd/go: directory traversal in "go get" via curly braces in import paths golang/go#29231
- cmd/go: remote command execution during "go get -u" golang/go#29230

See the Go 1.11.3 milestone on the issue tracker for details:
https://github.com/golang/go/issues?q=milestone%3AGo1.11.3

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
(cherry picked from commit 6b7c093)
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

thaJeztah added a commit to thaJeztah/cli that referenced this issue May 20, 2019

Bump Golang 1.11.4 (includes fix for CVE-2018-16875)
go1.11.4 (released 2018/12/14) includes fixes to cgo, the compiler, linker,
runtime, documentation, go command, and the net/http and go/types packages. It
includes a fix to a bug introduced in Go 1.11.3 that broke go get for import
path patterns containing "...".

See the Go 1.11.4 milestone for details:
https://github.com/golang/go/issues?q=milestone%3AGo1.11.4+label%3ACherryPickApproved

go1.11.3 (released 2018/12/14)

- crypto/x509: CPU denial of service in chain validation golang/go#29233
- cmd/go: directory traversal in "go get" via curly braces in import paths golang/go#29231
- cmd/go: remote command execution during "go get -u" golang/go#29230

See the Go 1.11.3 milestone on the issue tracker for details:
https://github.com/golang/go/issues?q=milestone%3AGo1.11.3

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
(cherry picked from commit deaf6e1)
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

thaJeztah added a commit to thaJeztah/docker that referenced this issue Jun 14, 2019

Bump Golang 1.11.3 (CVE-2018-16875)
go1.11.13 (released 2018/12/14)

- crypto/x509: CPU denial of service in chain validation golang/go#29233
- cmd/go: directory traversal in "go get" via curly braces in import paths golang/go#29231
- cmd/go: remote command execution during "go get -u" golang/go#29230

See the Go 1.11.3 milestone on the issue tracker for details:
https://github.com/golang/go/issues?q=milestone%3AGo1.11.3

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
(cherry picked from commit 6b7c093)
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

thaJeztah added a commit to thaJeztah/cli that referenced this issue Jun 14, 2019

Bump Golang 1.11.4 (includes fix for CVE-2018-16875)
go1.11.4 (released 2018/12/14) includes fixes to cgo, the compiler, linker,
runtime, documentation, go command, and the net/http and go/types packages. It
includes a fix to a bug introduced in Go 1.11.3 that broke go get for import
path patterns containing "...".

See the Go 1.11.4 milestone for details:
https://github.com/golang/go/issues?q=milestone%3AGo1.11.4+label%3ACherryPickApproved

go1.11.3 (released 2018/12/14)

- crypto/x509: CPU denial of service in chain validation golang/go#29233
- cmd/go: directory traversal in "go get" via curly braces in import paths golang/go#29231
- cmd/go: remote command execution during "go get -u" golang/go#29230

See the Go 1.11.3 milestone on the issue tracker for details:
https://github.com/golang/go/issues?q=milestone%3AGo1.11.3

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
(cherry picked from commit deaf6e1)
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

thaJeztah added a commit to thaJeztah/docker that referenced this issue Jun 20, 2019

Bump Golang 1.11.3 (CVE-2018-16875)
go1.11.13 (released 2018/12/14)

- crypto/x509: CPU denial of service in chain validation golang/go#29233
- cmd/go: directory traversal in "go get" via curly braces in import paths golang/go#29231
- cmd/go: remote command execution during "go get -u" golang/go#29230

See the Go 1.11.3 milestone on the issue tracker for details:
https://github.com/golang/go/issues?q=milestone%3AGo1.11.3

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
(cherry picked from commit 6b7c093)
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
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