From be1eb6f70fb40e45096b69aeb048d54c526a4a8f Mon Sep 17 00:00:00 2001
From: Valentin Rothberg <rothberg@redhat.com>
Date: Thu, 6 Feb 2020 09:49:15 +0100
Subject: [PATCH] [1.11-rhel] update github.com/containers/image
Note that this includes fixes for
https://access.redhat.com/security/cve/CVE-2020-1702.
Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
---
go.mod | 2 +-
go.sum | 2 +
.../image/v5/docker/docker_client.go | 6 +-
.../image/v5/docker/docker_image_dest.go | 3 +-
.../image/v5/docker/docker_image_src.go | 10 ++--
.../image/v5/docker/tarfile/dest.go | 3 +-
.../containers/image/v5/docker/tarfile/src.go | 9 +--
.../image/v5/image/docker_schema2.go | 4 +-
.../containers/image/v5/image/oci.go | 4 +-
.../image/v5/internal/iolimits/iolimits.go | 60 +++++++++++++++++++
.../image/v5/openshift/openshift.go | 4 +-
vendor/modules.txt | 3 +-
12 files changed, 89 insertions(+), 21 deletions(-)
create mode 100644 vendor/github.com/containers/image/v5/internal/iolimits/iolimits.go
diff --git a/go.mod b/go.mod
index 684b00ff5..b94792238 100644
--- a/go.mod
+++ b/go.mod
@@ -5,7 +5,7 @@ go 1.12
require (
github.com/blang/semver v3.5.0+incompatible // indirect
github.com/containernetworking/cni v0.7.1
- github.com/containers/image/v5 v5.0.0
+ github.com/containers/image/v5 v5.0.1-0.20200205124631-82291c45f2b0
github.com/containers/storage v1.14.0
github.com/cyphar/filepath-securejoin v0.2.2
github.com/docker/distribution v2.7.1+incompatible
diff --git a/go.sum b/go.sum
index 1cce3ff7e..ef8729952 100644
--- a/go.sum
+++ b/go.sum
@@ -54,6 +54,8 @@ github.com/containers/image/v4 v4.0.1 h1:idNGHChj0Pyv3vLrxul2oSVMZLeFqpoq3CjLeVg
github.com/containers/image/v4 v4.0.1/go.mod h1:0ASJH1YgJiX/eqFZObqepgsvIA4XjCgpyfwn9pDGafA=
github.com/containers/image/v5 v5.0.0 h1:arnXgbt1ucsC/ndtSpiQY87rA0UjhF+/xQnPzqdBDn4=
github.com/containers/image/v5 v5.0.0/go.mod h1:MgiLzCfIeo8lrHi+4Lb8HP+rh513sm0Mlk6RrhjFOLY=
+github.com/containers/image/v5 v5.0.1-0.20200205124631-82291c45f2b0 h1:iV4aHKRoPcHp5BISsuiPMyaCjGJfLKp/FUMAG1NeqvE=
+github.com/containers/image/v5 v5.0.1-0.20200205124631-82291c45f2b0/go.mod h1:MgiLzCfIeo8lrHi+4Lb8HP+rh513sm0Mlk6RrhjFOLY=
github.com/containers/libtrust v0.0.0-20190913040956-14b96171aa3b h1:Q8ePgVfHDplZ7U33NwHZkrVELsZP5fYj9pM5WBZB2GE=
github.com/containers/libtrust v0.0.0-20190913040956-14b96171aa3b/go.mod h1:9rfv8iPl1ZP7aqh9YA68wnZv2NUDbXdcdPHVz0pFbPY=
github.com/containers/storage v1.13.4 h1:j0bBaJDKbUHtAW1MXPFnwXJtqcH+foWeuXK1YaBV5GA=
diff --git a/vendor/github.com/containers/image/v5/docker/docker_client.go b/vendor/github.com/containers/image/v5/docker/docker_client.go
index 0b012c703..bff077a40 100644
--- a/vendor/github.com/containers/image/v5/docker/docker_client.go
+++ b/vendor/github.com/containers/image/v5/docker/docker_client.go
@@ -6,7 +6,6 @@ import (
"encoding/json"
"fmt"
"io"
- "io/ioutil"
"net/http"
"net/url"
"os"
@@ -17,6 +16,7 @@ import (
"time"
"github.com/containers/image/v5/docker/reference"
+ "github.com/containers/image/v5/internal/iolimits"
"github.com/containers/image/v5/pkg/docker/config"
"github.com/containers/image/v5/pkg/sysregistriesv2"
"github.com/containers/image/v5/pkg/tlsclientconfig"
@@ -597,7 +597,7 @@ func (c *dockerClient) getBearerToken(ctx context.Context, challenge challenge,
default:
return nil, errors.Errorf("unexpected http code: %d (%s), URL: %s", res.StatusCode, http.StatusText(res.StatusCode), authReq.URL)
}
- tokenBlob, err := ioutil.ReadAll(res.Body)
+ tokenBlob, err := iolimits.ReadAtMost(res.Body, iolimits.MaxAuthTokenBodySize)
if err != nil {
return nil, err
}
@@ -690,7 +690,7 @@ func (c *dockerClient) getExtensionsSignatures(ctx context.Context, ref dockerRe
return nil, errors.Wrapf(clientLib.HandleErrorResponse(res), "Error downloading signatures for %s in %s", manifestDigest, ref.ref.Name())
}
- body, err := ioutil.ReadAll(res.Body)
+ body, err := iolimits.ReadAtMost(res.Body, iolimits.MaxSignatureListBodySize)
if err != nil {
return nil, err
}
diff --git a/vendor/github.com/containers/image/v5/docker/docker_image_dest.go b/vendor/github.com/containers/image/v5/docker/docker_image_dest.go
index 417d97aec..ce8a1f357 100644
--- a/vendor/github.com/containers/image/v5/docker/docker_image_dest.go
+++ b/vendor/github.com/containers/image/v5/docker/docker_image_dest.go
@@ -15,6 +15,7 @@ import (
"strings"
"github.com/containers/image/v5/docker/reference"
+ "github.com/containers/image/v5/internal/iolimits"
"github.com/containers/image/v5/manifest"
"github.com/containers/image/v5/pkg/blobinfocache/none"
"github.com/containers/image/v5/types"
@@ -620,7 +621,7 @@ sigExists:
}
defer res.Body.Close()
if res.StatusCode != http.StatusCreated {
- body, err := ioutil.ReadAll(res.Body)
+ body, err := iolimits.ReadAtMost(res.Body, iolimits.MaxErrorBodySize)
if err == nil {
logrus.Debugf("Error body %s", string(body))
}
diff --git a/vendor/github.com/containers/image/v5/docker/docker_image_src.go b/vendor/github.com/containers/image/v5/docker/docker_image_src.go
index 35beb30e5..5436d9b7d 100644
--- a/vendor/github.com/containers/image/v5/docker/docker_image_src.go
+++ b/vendor/github.com/containers/image/v5/docker/docker_image_src.go
@@ -12,6 +12,7 @@ import (
"strconv"
"github.com/containers/image/v5/docker/reference"
+ "github.com/containers/image/v5/internal/iolimits"
"github.com/containers/image/v5/manifest"
"github.com/containers/image/v5/pkg/sysregistriesv2"
"github.com/containers/image/v5/types"
@@ -156,7 +157,8 @@ func (s *dockerImageSource) fetchManifest(ctx context.Context, tagOrDigest strin
if res.StatusCode != http.StatusOK {
return nil, "", errors.Wrapf(client.HandleErrorResponse(res), "Error reading manifest %s in %s", tagOrDigest, s.ref.ref.Name())
}
- manblob, err := ioutil.ReadAll(res.Body)
+
+ manblob, err := iolimits.ReadAtMost(res.Body, iolimits.MaxManifestBodySize)
if err != nil {
return nil, "", err
}
@@ -342,7 +344,7 @@ func (s *dockerImageSource) getOneSignature(ctx context.Context, url *url.URL) (
} else if res.StatusCode != http.StatusOK {
return nil, false, errors.Errorf("Error reading signature from %s: status %d (%s)", url.String(), res.StatusCode, http.StatusText(res.StatusCode))
}
- sig, err := ioutil.ReadAll(res.Body)
+ sig, err := iolimits.ReadAtMost(res.Body, iolimits.MaxSignatureBodySize)
if err != nil {
return nil, false, err
}
@@ -401,7 +403,7 @@ func deleteImage(ctx context.Context, sys *types.SystemContext, ref dockerRefere
return err
}
defer get.Body.Close()
- manifestBody, err := ioutil.ReadAll(get.Body)
+ manifestBody, err := iolimits.ReadAtMost(get.Body, iolimits.MaxManifestBodySize)
if err != nil {
return err
}
@@ -424,7 +426,7 @@ func deleteImage(ctx context.Context, sys *types.SystemContext, ref dockerRefere
}
defer delete.Body.Close()
- body, err := ioutil.ReadAll(delete.Body)
+ body, err := iolimits.ReadAtMost(delete.Body, iolimits.MaxErrorBodySize)
if err != nil {
return err
}
diff --git a/vendor/github.com/containers/image/v5/docker/tarfile/dest.go b/vendor/github.com/containers/image/v5/docker/tarfile/dest.go
index b02c60bb3..9748ca112 100644
--- a/vendor/github.com/containers/image/v5/docker/tarfile/dest.go
+++ b/vendor/github.com/containers/image/v5/docker/tarfile/dest.go
@@ -13,6 +13,7 @@ import (
"time"
"github.com/containers/image/v5/docker/reference"
+ "github.com/containers/image/v5/internal/iolimits"
"github.com/containers/image/v5/internal/tmpdir"
"github.com/containers/image/v5/manifest"
"github.com/containers/image/v5/types"
@@ -135,7 +136,7 @@ func (d *Destination) PutBlob(ctx context.Context, stream io.Reader, inputInfo t
}
if isConfig {
- buf, err := ioutil.ReadAll(stream)
+ buf, err := iolimits.ReadAtMost(stream, iolimits.MaxConfigBodySize)
if err != nil {
return types.BlobInfo{}, errors.Wrap(err, "Error reading Config file stream")
}
diff --git a/vendor/github.com/containers/image/v5/docker/tarfile/src.go b/vendor/github.com/containers/image/v5/docker/tarfile/src.go
index ad0a3d2cb..bbf604da6 100644
--- a/vendor/github.com/containers/image/v5/docker/tarfile/src.go
+++ b/vendor/github.com/containers/image/v5/docker/tarfile/src.go
@@ -11,6 +11,7 @@ import (
"path"
"sync"
+ "github.com/containers/image/v5/internal/iolimits"
"github.com/containers/image/v5/internal/tmpdir"
"github.com/containers/image/v5/manifest"
"github.com/containers/image/v5/pkg/compression"
@@ -187,13 +188,13 @@ func findTarComponent(inputFile io.Reader, path string) (*tar.Reader, *tar.Heade
}
// readTarComponent returns full contents of componentPath.
-func (s *Source) readTarComponent(path string) ([]byte, error) {
+func (s *Source) readTarComponent(path string, limit int) ([]byte, error) {
file, err := s.openTarComponent(path)
if err != nil {
return nil, errors.Wrapf(err, "Error loading tar component %s", path)
}
defer file.Close()
- bytes, err := ioutil.ReadAll(file)
+ bytes, err := iolimits.ReadAtMost(file, limit)
if err != nil {
return nil, err
}
@@ -224,7 +225,7 @@ func (s *Source) ensureCachedDataIsPresentPrivate() error {
}
// Read and parse config.
- configBytes, err := s.readTarComponent(tarManifest[0].Config)
+ configBytes, err := s.readTarComponent(tarManifest[0].Config, iolimits.MaxConfigBodySize)
if err != nil {
return err
}
@@ -250,7 +251,7 @@ func (s *Source) ensureCachedDataIsPresentPrivate() error {
// loadTarManifest loads and decodes the manifest.json.
func (s *Source) loadTarManifest() ([]ManifestItem, error) {
// FIXME? Do we need to deal with the legacy format?
- bytes, err := s.readTarComponent(manifestFileName)
+ bytes, err := s.readTarComponent(manifestFileName, iolimits.MaxTarFileManifestSize)
if err != nil {
return nil, err
}
diff --git a/vendor/github.com/containers/image/v5/image/docker_schema2.go b/vendor/github.com/containers/image/v5/image/docker_schema2.go
index 254c13f78..29c5047d7 100644
--- a/vendor/github.com/containers/image/v5/image/docker_schema2.go
+++ b/vendor/github.com/containers/image/v5/image/docker_schema2.go
@@ -7,10 +7,10 @@ import (
"encoding/hex"
"encoding/json"
"fmt"
- "io/ioutil"
"strings"
"github.com/containers/image/v5/docker/reference"
+ "github.com/containers/image/v5/internal/iolimits"
"github.com/containers/image/v5/manifest"
"github.com/containers/image/v5/pkg/blobinfocache/none"
"github.com/containers/image/v5/types"
@@ -102,7 +102,7 @@ func (m *manifestSchema2) ConfigBlob(ctx context.Context) ([]byte, error) {
return nil, err
}
defer stream.Close()
- blob, err := ioutil.ReadAll(stream)
+ blob, err := iolimits.ReadAtMost(stream, iolimits.MaxConfigBodySize)
if err != nil {
return nil, err
}
diff --git a/vendor/github.com/containers/image/v5/image/oci.go b/vendor/github.com/containers/image/v5/image/oci.go
index 18a38d463..406da262f 100644
--- a/vendor/github.com/containers/image/v5/image/oci.go
+++ b/vendor/github.com/containers/image/v5/image/oci.go
@@ -4,9 +4,9 @@ import (
"context"
"encoding/json"
"fmt"
- "io/ioutil"
"github.com/containers/image/v5/docker/reference"
+ "github.com/containers/image/v5/internal/iolimits"
"github.com/containers/image/v5/manifest"
"github.com/containers/image/v5/pkg/blobinfocache/none"
"github.com/containers/image/v5/types"
@@ -67,7 +67,7 @@ func (m *manifestOCI1) ConfigBlob(ctx context.Context) ([]byte, error) {
return nil, err
}
defer stream.Close()
- blob, err := ioutil.ReadAll(stream)
+ blob, err := iolimits.ReadAtMost(stream, iolimits.MaxConfigBodySize)
if err != nil {
return nil, err
}
diff --git a/vendor/github.com/containers/image/v5/internal/iolimits/iolimits.go b/vendor/github.com/containers/image/v5/internal/iolimits/iolimits.go
new file mode 100644
index 000000000..3fed1995c
--- /dev/null
+++ b/vendor/github.com/containers/image/v5/internal/iolimits/iolimits.go
@@ -0,0 +1,60 @@
+package iolimits
+
+import (
+ "io"
+ "io/ioutil"
+
+ "github.com/pkg/errors"
+)
+
+// All constants below are intended to be used as limits for `ReadAtMost`. The
+// immediate use-case for limiting the size of in-memory copied data is to
+// protect against OOM DOS attacks as described inCVE-2020-1702. Instead of
+// copying data until running out of memory, we error out after hitting the
+// specified limit.
+const (
+ // megaByte denotes one megabyte and is intended to be used as a limit in
+ // `ReadAtMost`.
+ megaByte = 1 << 20
+ // MaxManifestBodySize is the maximum allowed size of a manifest. The limit
+ // of 4 MB aligns with the one of a Docker registry:
+ // https://github.com/docker/distribution/blob/a8371794149d1d95f1e846744b05c87f2f825e5a/registry/handlers/manifests.go#L30
+ MaxManifestBodySize = 4 * megaByte
+ // MaxAuthTokenBodySize is the maximum allowed size of an auth token.
+ // The limit of 1 MB is considered to be greatly sufficient.
+ MaxAuthTokenBodySize = megaByte
+ // MaxSignatureListBodySize is the maximum allowed size of a signature list.
+ // The limit of 4 MB is considered to be greatly sufficient.
+ MaxSignatureListBodySize = 4 * megaByte
+ // MaxSignatureBodySize is the maximum allowed size of a signature.
+ // The limit of 4 MB is considered to be greatly sufficient.
+ MaxSignatureBodySize = 4 * megaByte
+ // MaxErrorBodySize is the maximum allowed size of an error-response body.
+ // The limit of 1 MB is considered to be greatly sufficient.
+ MaxErrorBodySize = megaByte
+ // MaxConfigBodySize is the maximum allowed size of a config blob.
+ // The limit of 4 MB is considered to be greatly sufficient.
+ MaxConfigBodySize = 4 * megaByte
+ // MaxOpenShiftStatusBody is the maximum allowed size of an OpenShift status body.
+ // The limit of 4 MB is considered to be greatly sufficient.
+ MaxOpenShiftStatusBody = 4 * megaByte
+ // MaxTarFileManifestSize is the maximum allowed size of a (docker save)-like manifest (which may contain multiple images)
+ // The limit of 1 MB is considered to be greatly sufficient.
+ MaxTarFileManifestSize = megaByte
+)
+
+// ReadAtMost reads from reader and errors out if the specified limit (in bytes) is exceeded.
+func ReadAtMost(reader io.Reader, limit int) ([]byte, error) {
+ limitedReader := io.LimitReader(reader, int64(limit+1))
+
+ res, err := ioutil.ReadAll(limitedReader)
+ if err != nil {
+ return nil, err
+ }
+
+ if len(res) > limit {
+ return nil, errors.Errorf("exceeded maximum allowed size of %d bytes", limit)
+ }
+
+ return res, nil
+}
diff --git a/vendor/github.com/containers/image/v5/openshift/openshift.go b/vendor/github.com/containers/image/v5/openshift/openshift.go
index 016de4803..c37e1b751 100644
--- a/vendor/github.com/containers/image/v5/openshift/openshift.go
+++ b/vendor/github.com/containers/image/v5/openshift/openshift.go
@@ -7,13 +7,13 @@ import (
"encoding/json"
"fmt"
"io"
- "io/ioutil"
"net/http"
"net/url"
"strings"
"github.com/containers/image/v5/docker"
"github.com/containers/image/v5/docker/reference"
+ "github.com/containers/image/v5/internal/iolimits"
"github.com/containers/image/v5/manifest"
"github.com/containers/image/v5/types"
"github.com/containers/image/v5/version"
@@ -102,7 +102,7 @@ func (c *openshiftClient) doRequest(ctx context.Context, method, path string, re
return nil, err
}
defer res.Body.Close()
- body, err := ioutil.ReadAll(res.Body)
+ body, err := iolimits.ReadAtMost(res.Body, iolimits.MaxOpenShiftStatusBody)
if err != nil {
return nil, err
}
diff --git a/vendor/modules.txt b/vendor/modules.txt
index 840dae067..3f72f3f34 100644
--- a/vendor/modules.txt
+++ b/vendor/modules.txt
@@ -48,7 +48,7 @@ github.com/containernetworking/cni/pkg/types
github.com/containernetworking/cni/pkg/types/020
github.com/containernetworking/cni/pkg/types/current
github.com/containernetworking/cni/pkg/version
-# github.com/containers/image/v5 v5.0.0
+# github.com/containers/image/v5 v5.0.1-0.20200205124631-82291c45f2b0
github.com/containers/image/v5/copy
github.com/containers/image/v5/directory
github.com/containers/image/v5/directory/explicitfilepath
@@ -59,6 +59,7 @@ github.com/containers/image/v5/docker/policyconfiguration
github.com/containers/image/v5/docker/reference
github.com/containers/image/v5/docker/tarfile
github.com/containers/image/v5/image
+github.com/containers/image/v5/internal/iolimits
github.com/containers/image/v5/internal/pkg/keyctl
github.com/containers/image/v5/internal/tmpdir
github.com/containers/image/v5/manifest