By allowing Open(at)InRoot to opt-out of the extra work done by MkdirAll
to do the necessary "partial lookups", Open(at)InRoot now does less work
for both implementations (resulting in a many-fold decrease in the number of
operations for openat2, and a modest improvement for non-openat2) and is
far more guaranteed to match the correct openat2(RESOLVE_IN_ROOT)
behaviour.
We now use readlinkat(fd, "") where possible. For Open(at)InRoot this
effectively just means that we no longer risk getting spurious errors during
rename races. However, for our hardened procfs handler, this in theory should
prevent mount attacks from tricking us when doing magic-link readlinks (even
when using the unsafe host /proc handle). Unfortunately Reopen is still
potentially vulnerable to those kinds of somewhat-esoteric attacks.
Several improvements were made to the errors returned by Open(at)InRoot and
MkdirAll when dealing with invalid paths under the emulated (ie.
non-openat2) implementation. Previously, some paths would return the wrong
error (ENOENT when the last component was a non-directory), and other paths
would be returned as though they were acceptable (trailing-slash components
after a non-directory would be ignored by Open(at)InRoot).
These changes were done to match openat2's behaviour and purely is a
consistency fix (most users are going to be using openat2 anyway).
However, it does introduce a new *os.File-based API which is much safer
to use for most usecases. These are adapted from [libpathrs][1] and are
the bare minimum to be able to operate more safely on an untrusted
rootfs where an attacker has write access (something that SecureJoin
cannot protect against). The new APIs are:
OpenInRoot, which resolves a path inside a rootfs and returns an
*os.File handle to the path. Note that the file handle returned by
OpenInRoot is an O_PATH handle, which cannot be used for reading or
writing (as well as some other operations -- see open(2) for more
details).
Reopen, which takes an O_PATH file handle and safely re-opens it to
"upgrade" it to a regular handle.
By allowing Open(at)InRoot to opt-out of the extra work done by MkdirAll
to do the necessary "partial lookups", Open(at)InRoot now does less work
for both implementations (resulting in a many-fold decrease in the number of
operations for openat2, and a modest improvement for non-openat2) and is
far more guaranteed to match the correct openat2(RESOLVE_IN_ROOT)
behaviour.
We now use readlinkat(fd, "") where possible. For Open(at)InRoot this
effectively just means that we no longer risk getting spurious errors during
rename races. However, for our hardened procfs handler, this in theory should
prevent mount attacks from tricking us when doing magic-link readlinks (even
when using the unsafe host /proc handle). Unfortunately Reopen is still
potentially vulnerable to those kinds of somewhat-esoteric attacks.
Several improvements were made to the errors returned by Open(at)InRoot and
MkdirAll when dealing with invalid paths under the emulated (ie.
non-openat2) implementation. Previously, some paths would return the wrong
error (ENOENT when the last component was a non-directory), and other paths
would be returned as though they were acceptable (trailing-slash components
after a non-directory would be ignored by Open(at)InRoot).
These changes were done to match openat2's behaviour and purely is a
consistency fix (most users are going to be using openat2 anyway).
[0.3.0] - 2024-07-11
Added
A new set of *os.File-based APIs have been added. These are adapted from
[libpathrs][] and we strongly suggest using them if possible (as they provide
far more protection against attacks than SecureJoin):
Open(at)InRoot resolves a path inside a rootfs and returns an *os.File
handle to the path. Note that the handle returned is an O_PATH handle,
which cannot be used for reading or writing (as well as some other
operations -- [see open(2) for more details][open.2])
Reopen takes an O_PATH file handle and safely re-opens it to upgrade
it to a regular handle. This can also be used with non-O_PATH handles,
but O_PATH is the most obvious application.
MkdirAll is an implementation of os.MkdirAll that is safe to use to
Add MountedFast by @kolyshkin in moby/sys#100
Note: most users should keep using Mounted, which already incorporates all optimizations from MountedFast
Bumps the go-modules group with 15 updates in the / directory:
1.33.1
1.34.1
0.18.7
0.18.8
1.0.0
1.0.1
1.5.5
1.5.6
0.12.4
0.12.6
1.3.9
1.4.0
0.2.5
0.3.1
0.0.15
0.0.16
0.5.0
0.6.0
0.1.0
0.3.0
1.2.2
1.3.0
1.6.0
1.7.0
2.17.0
2.19.1
0.7.0
0.8.0
0.16.0
0.17.0
Updates
github.com/onsi/gomega
from 1.33.1 to 1.34.1Release notes
Sourced from github.com/onsi/gomega's releases.
Changelog
Sourced from github.com/onsi/gomega's changelog.
Commits
fa057b8
v1.34.15e71dcd
Use slices from exp/slices to keep golang 1.20 compat32e5498
v1.34.0cb3fa6a
run go mod tidy and wonder why go get doesnt just run it for me in the first ...8af2ece
bump ginkgo878940c
fix incorrect handling of nil slices in HaveExactElements (fixes #771)f5bec80
clean up bipartitegraph testsebadb67
issue_765 - fixed bug in Hopcroft-Karp algorithm123a071
Fix typo in docsc549e0d
Add RoundTripper method to ghttp.ServerUpdates
github.com/paketo-buildpacks/occam
from 0.18.7 to 0.18.8Release notes
Sourced from github.com/paketo-buildpacks/occam's releases.
Commits
1193f3c
Bump docker to version 26.1.5 to fix CVE-2024-411105cd4ede
Updates go mod version to 1.23.02e5b930
Updates go mod version to 1.22.6815b014
Bump github.com/paketo-buildpacks/packit/v2 from 2.14.1 to 2.14.274a79fb
Bump github.com/paketo-buildpacks/packit/v2 from 2.14.0 to 2.14.190134a5
Bump github.com/google/go-containerregistry from 0.20.1 to 0.20.2653a6fb
Bump github.com/onsi/gomega from 1.34.0 to 1.34.1ed0e429
Bump github.com/onsi/gomega from 1.33.1 to 1.34.0f467245
Updates go mod version to 1.22.5c97acf2
Bump github.com/google/go-containerregistry from 0.20.0 to 0.20.1Updates
github.com/paketo-buildpacks/packit/v2
from 2.14.0 to 2.14.2Release notes
Sourced from github.com/paketo-buildpacks/packit/v2's releases.
Commits
3bc586e
do not run draft release workflow on branches named v2-<something>d558b87
Bump github.com/onsi/gomega from 1.33.1 to 1.34.19f2a7b3
Bump github.com/gabriel-vasile/mimetype from 1.4.4 to 1.4.5b117031
Updating github-configb6530bc
Include error handling7222905
Fix override of existing values in prepend & appende366827
Updating github-configa8ac405
Bump github.com/gabriel-vasile/mimetype from 1.4.3 to 1.4.44ff7347
Bump github.com/BurntSushi/toml from 1.3.2 to 1.4.0Updates
dario.cat/mergo
from 1.0.0 to 1.0.1Release notes
Sourced from dario.cat/mergo's releases.
Commits
59ea6a9
Merge pull request #251 from joshkaplinsky/joshkaplinsky/without-dereference-...96f24af
Merge pull request #253 from vsemichev/master2f1a615
fixes issue #187. adds test to verify the fix.4da170b
fixes issue #187. attempt #3a13a117
fixes issue #187. attempt #26b830ff
fixes issue #187f33862a
WithoutDereference should respect structscde9f0e
Merge pull request #246 from darccio/darccio/v1-frozenf1e2fe5
chore: frozen v17f7b4af
Update FUNDING.ymlUpdates
github.com/DataDog/zstd
from 1.5.5 to 1.5.6Release notes
Sourced from github.com/DataDog/zstd's releases.
Commits
b52f603
Merge pull request #143 from DataDog/viq111/1.5.6cf4778e
Update Readme for 1.5.6ed87d43
Update vendored zstd to 1.5.6dd7b332
Merge pull request #136 from colinlyguo/fix-readmebeb4dfd
Merge pull request #141 from DataDog/sfluor-patch-1e75a26a
Update upperBound ratio when guessing the required decompression buffer sizec9a5141
fix readme869dae0
Merge pull request #132 from DataDog/viq111/bulk-fix-highlycompressed-payloadsbf7b920
[bulk] Add extra empty payload decompression test9c0d33f
[bulk] Fix namingUpdates
github.com/Microsoft/hcsshim
from 0.12.4 to 0.12.6Release notes
Sourced from github.com/Microsoft/hcsshim's releases.
Commits
f922f2a
Omnibus dependency updates (#2051)7d25ce2
Update module versions85a5a57
drop usage of deprecated package/methodsd4b1cc0
Bump opa/containerd to latest versions6a5ebd3
Upgrade deps to resolve CVEs (#2225)4f46058
Omnibus dependency update (#2166)e970943
Modifying network flag EnableIov.4f77a09
Hcsshim wrapper over HNS API needed for exclusion of management mac addresses...3b5bd8a
[release/0.12] vendor: github.com/containerd/containerd v17.1840cdbc8
Adding state attribute to the HNSEndpoint struct to support hyperv containers...Updates
github.com/cloudflare/circl
from 1.3.9 to 1.4.0Release notes
Sourced from github.com/cloudflare/circl's releases.
Commits
c311e46
Preparing for release v1.4.062385a8
Add ML-KEM decapsulation key check.2b4626d
Add ML-KEM (FIPS 203).d26845f
eddilithium3: fix typosUpdates
github.com/cyphar/filepath-securejoin
from 0.2.5 to 0.3.1Release notes
Sourced from github.com/cyphar/filepath-securejoin's releases.
... (truncated)
Changelog
Sourced from github.com/cyphar/filepath-securejoin's changelog.
... (truncated)
Commits
ce7b28a
VERSION: release v0.3.1a2c14f8
CHANGELOG: add readlinkat(fd, "") shout-out4ea279f
merge #22 into cyphar/filepath-securejoin:main16e1bec
CHANGELOG: add initial changelog with current history2404ffb
merge #21 into cyphar/filepath-securejoin:mainf29b7a4
lookup: handle // and trailing slash components correctlyecd61ca
merge #19 into cyphar/filepath-securejoin:main38b1220
procfs: refactor statx mnt_id logic45c4415
procfs: use readlink(fd, "") for magic-linksedab538
merge #17 into cyphar/filepath-securejoin:mainUpdates
github.com/docker/cli
from 27.0.2+incompatible to 27.1.1+incompatibleCommits
6312585
Merge pull request #5274 from thaJeztah/27.1_backport_compose_oomc599566
Allow for OomScoreAdjfb19def
Merge pull request #5271 from thaJeztah/27.1_backport_custom_headers_env_varbccd478
Merge pull request #5270 from thaJeztah/27.1_backport_test_spring_cleaning8992378
add support for DOCKER_CUSTOM_HEADERS env-var (experimental)f90273c
Merge pull request #5269 from thaJeztah/27.1_backport_add_macos_apple_siliconca9636a
test spring-cleaningad47d2a
gha: update to macOS 13, add macOS 14 arm64 (Apple Silicon M1)a2a0fb7
Merge pull request #5263 from thaJeztah/27.1_backport_relax_pr_check16d6c90
Merge pull request #5265 from thaJeztah/27.1_backport_bump_buildx_composeUpdates
github.com/gabriel-vasile/mimetype
from 1.4.4 to 1.4.5Release notes
Sourced from github.com/gabriel-vasile/mimetype's releases.
Commits
b36b70f
remove exe from testdata (#561)e802551
Bump the github-actions group across 1 directory with 3 updates (#560)f003e99
Bump golang.org/x/net in the gomod group across 1 directory (#552)e0c5c59
reduce project size by moving mimetype.gif to testdata (#548)f296c1b
alias rtf to application/rtf (#547)8329892
Updating RTF Magic number to match <https://www.iana.org/assignments/media-ty...3267116
remove tarbomb from testdata folder (#540)cdceff9
zip: use []byte instead of string to prevent allocs (#537)77e3848
tar: remove strconv dependency for tar checksum octal numbers (#536)09ff708
json: improve performance by using a pool of scanners (#535)Updates
github.com/google/go-containerregistry
from 0.19.2 to 0.20.2Release notes
Sourced from github.com/google/go-containerregistry's releases.
Commits
c195f15
deps: bump docker dep (#1991)c3d1dcc
Createremote.Push
(#1978)d36047a
Restore blind-write to remote.Put (#1970)9915a85
Referrer API must return correct Content-Type (#1968)Updates
github.com/mattn/go-runewidth
from 0.0.15 to 0.0.16Commits
6ceadc6
Support Unicode 15.1.0Updates
github.com/moby/sys/sequential
from 0.5.0 to 0.6.0Release notes
Sourced from github.com/moby/sys/sequential's releases.
Commits
03b9f8d
Merge pull request #94 from thaJeztah/bump_mountinfobdd898e
mount: update github.com/moby/sys/mountinfo v0.5.0fbd276c
Merge pull request #93 from kolyshkin/ci-f35afb7f50
Merge pull request #92 from kolyshkin/more-linters9372d68
ci: bump Fedora to 359a90d6d
Format code with gofumpt, enable linter85e4bfd
Makefile: update golangci-lint to 1.43.0f0fb439
.gitattributes: addb016007
ci: add unconvert and errorlint linters to golanci6056970
Fix errorlint warningsUpdates
github.com/moby/sys/user
from 0.1.0 to 0.3.0Release notes
Sourced from github.com/moby/sys/user's releases.
... (truncated)
Commits
5447519
Merge pull request #145 from thaJeztah/separate_userns370a9ed
user: move userns package to separate module, and retract v0.2.086870e7
Merge pull request #140 from thaJeztah/integrate_libcontainer_userns5cd502c
user: require go1.21 or highera40602b
user/userns: add godoc for packagebc3a8a5
libct/userns: implement RunningInUserNS with sync.OnceValuebc0de32
libct/userns: make fuzzer Linux-only, and remove stub for uidMapInUserNS333fe31
libct/userns: change RunningInUserNS to a w... _Description has been truncated_