.gitignore

@@ -1,4 +1,2 @@
-SOURCES/dnsname-bdc4ab8.tar.gz
+SOURCES/cri-o-9b1f0a0.tar.gz
-SOURCES/gvisor-tap-vsock-c62637db4d1417408b84340cbe993843a4984b92.tar.gz
+SOURCES/libpod-921f98f.tar.gz
-SOURCES/v0.1.7.tar.gz
-SOURCES/v4.9-rhel-70e4d02.tar.gz

.podman.metadata

@@ -1,4 +1,2 @@
-69fb828d3028f968e46420d58cc80bc59e446051 SOURCES/dnsname-bdc4ab8.tar.gz
+b53ff7dd655dec8ddab85b7782a2d41e6bdcb301 SOURCES/cri-o-9b1f0a0.tar.gz
-78ab2a45bc90b147bc3d7c1c286c375c274bee6a SOURCES/gvisor-tap-vsock-c62637db4d1417408b84340cbe993843a4984b92.tar.gz
+14fa9349a6277355aa6a4f079a131059d194fd99 SOURCES/libpod-921f98f.tar.gz
-94419a237f932ff2a79c91f6e3005034d9c367a5 SOURCES/v0.1.7.tar.gz
-6a76e90c911dc8fc5595459fcd9271b5bb673af6 SOURCES/v4.9-rhel-70e4d02.tar.gz

SOURCES/0001-Only-drop-all-caps-in-exec-when-non-root.patch

@@ -0,0 +1,31 @@
+From fbc96cdd1741021f3d18e49eac3757297aaba851 Mon Sep 17 00:00:00 2001
+From: Matthew Heon <mheon@redhat.com>
+Date: Fri, 19 Feb 2021 11:34:39 -0500
+Subject: [PATCH] Only drop all caps in exec when non-root
+
+We were dropping too many capabilities otherwise, which broke
+some critical system tools (e.g. useradd) in exec sessions.
+
+Fix RHBZ#1930552
+
+Signed-off-by: Matthew Heon <mheon@redhat.com>
+---
+ libpod/oci_conmon_linux.go | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/libpod/oci_conmon_linux.go b/libpod/oci_conmon_linux.go
+index d5973a1a6..18ede031e 100644
+--- a/libpod/oci.go
++++ b/libpod/oci.go
+@@ -1107,7 +1107,7 @@ func prepareProcessExec(c *Container, cmd, env []string, tty bool, cwd, user, se
+ 	pspec.Capabilities.Effective = []string{}
+ 	if privileged {
+ 		pspec.Capabilities.Bounding = allCaps
+-	} else {
++	} else if execUser.Uid != 0 {
+ 		pspec.Capabilities.Bounding = []string{}
+ 	}
+ 	pspec.Capabilities.Inheritable = pspec.Capabilities.Bounding
+-- 
+2.29.2
+

SOURCES/podman-1882267.patch

@@ -0,0 +1,23 @@
+From bc5be3ca10cd4c147955fadd2586b5dd8ad0eeea Mon Sep 17 00:00:00 2001
+From: Matthew Heon <mheon@redhat.com>
+Date: Thu, 24 Sep 2020 10:42:13 -0400
+Subject: [PATCH] Fix https://bugzilla.redhat.com/show_bug.cgi?id=1882267
+
+Signed-off-by: Matthew Heon <mheon@redhat.com>
+---
+ cmd/podman/sigproxy.go | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/cmd/podman/sigproxy.go b/cmd/podman/sigproxy.go
+index 16861bad04..92d7f4e4a9 100644
+--- a/cmd/podman/sigproxy.go
++++ b/cmd/podman/sigproxy.go
+@@ -19,7 +19,7 @@ func ProxySignals(ctr *libpod.Container) {
+ 		for s := range sigBuffer {
+ 			// Ignore SIGCHLD and SIGPIPE - these are mostly likely
+ 			// intended for the podman command itself.
+-			if s == signal.SIGCHLD || s == signal.SIGPIPE {
++			if s == syscall.SIGCHLD || s == syscall.SIGPIPE || s == syscall.SIGURG {
+ 				continue
+ 			}
+ 

SOURCES/podman-CVE-2020-10696.patch

@@ -0,0 +1,48 @@
+From 840e7dad513b86f454573ad415701c0199f78d30 Mon Sep 17 00:00:00 2001
+From: TomSweeneyRedHat <tsweeney@redhat.com>
+Date: Tue, 24 Mar 2020 20:10:22 -0400
+Subject: [PATCH] Fix potential CVE in tarfile w/ symlink
+
+Stealing @nalind 's workaround to avoid refetching
+content after a file read failure.  Under the right
+circumstances that could be a symlink to a file meant
+to overwrite a good file with bad data.
+
+Testing:
+```
+goodstuff
+
+[1] 14901
+
+127.0.0.1 - - [24/Mar/2020 20:15:50] "GET / HTTP/1.1" 200 -
+127.0.0.1 - - [24/Mar/2020 20:15:50] "GET / HTTP/1.1" 200 -
+no FROM statement found
+
+goodstuff
+```
+
+Signed-off-by: TomSweeneyRedHat <tsweeney@redhat.com>
+---
+ imagebuildah/util.go | 5 +++--
+ 1 file changed, 3 insertions(+), 2 deletions(-)
+
+diff -up a/imagebuildah/util.go.CVE-2020-10696 b/imagebuildah/util.go
+--- a/vendor/github.com/containers//buildah/imagebuildah/util.go.CVE-2020-10696
++++ b/vendor/github.com/containers//buildah/imagebuildah/util.go
+@@ -12,6 +12,7 @@ import (
+ 
+ 	"github.com/containers/buildah"
+ 	"github.com/containers/storage/pkg/chrootarchive"
++	"github.com/containers/storage/pkg/ioutils"
+ 	"github.com/pkg/errors"
+ 	"github.com/sirupsen/logrus"
+ )
+@@ -47,7 +48,7 @@ func downloadToDirectory(url, dir string
+ 		}
+ 		dockerfile := filepath.Join(dir, "Dockerfile")
+ 		// Assume this is a Dockerfile
+-		if err := ioutil.WriteFile(dockerfile, body, 0600); err != nil {
++		if err := ioutils.AtomicWriteFile(dockerfile, body, 0600); err != nil {
+ 			return errors.Wrapf(err, "Failed to write %q to %q", url, dockerfile)
+ 		}
+ 	}

SOURCES/podman-CVE-2021-20188.patch

@@ -0,0 +1,319 @@
+From 69daa67c436a8fdeb0149aa5cb0112f03fdb699f Mon Sep 17 00:00:00 2001
+From: Matthew Heon <mheon@redhat.com>
+Date: Mon, 25 Jan 2021 14:18:07 -0500
+Subject: [PATCH] Correct handling of capabilities
+
+Ensure that capabilities are properly handled for non-root users
+in privileged containers. We do not want to give full caps, but
+instead only CapInh and CapEff (others should be all-zeroes).
+
+Fixing `podman run` is easy - the same code as the Podman 1.6 fix
+works there. The `podman exec` command is far more challenging.
+Exec received a complete rewrite to use Conmon at some point
+before Podman 1.6, and gained many capabilities in the process.
+One of those was the ability to actually tweak the capabilities
+of the exec process - 1.0 did not have that. Since it was needed
+to resolve this CVE, I was forced to backport a large bit of the
+1.0 -> 1.6 exec changes (passing a Process block to the OCI
+runtime, and using `prepareProcessExec()` to prepare said block).
+I am honestly uncomfortable with the size and scope of this
+change but I don't see another way around this.
+
+Fixes CVE-2021-20188
+
+Signed-off-by: Matthew Heon <mheon@redhat.com>
+---
+ libpod/container_api.go |  24 +------
+ libpod/oci.go           | 148 ++++++++++++++++++++++++++++++++--------
+ pkg/spec/spec.go        |   8 +++
+ 3 files changed, 132 insertions(+), 48 deletions(-)
+
+diff -up libpod-921f98f8795eb9fcb19ce581020cfdeff6dee09f/libpod/container_api.go.orig libpod-921f98f8795eb9fcb19ce581020cfdeff6dee09f/libpod/container_api.go
+--- libpod-921f98f8795eb9fcb19ce581020cfdeff6dee09f/libpod/container_api.go.orig	2019-02-11 16:26:46.000000000 +0100
++++ libpod-921f98f8795eb9fcb19ce581020cfdeff6dee09f/libpod/container_api.go	2021-02-12 10:38:48.767172399 +0100
+@@ -2,7 +2,6 @@ package libpod
+ 
+ import (
+ 	"context"
+-	"fmt"
+ 	"io/ioutil"
+ 	"os"
+ 	"strconv"
+@@ -11,9 +10,7 @@ import (
+ 
+ 	"github.com/containers/libpod/libpod/driver"
+ 	"github.com/containers/libpod/pkg/inspect"
+-	"github.com/containers/libpod/pkg/lookup"
+ 	"github.com/containers/storage/pkg/stringid"
+-	"github.com/docker/docker/daemon/caps"
+ 	"github.com/pkg/errors"
+ 	"github.com/sirupsen/logrus"
+ 	"k8s.io/apimachinery/pkg/util/wait"
+@@ -263,8 +260,6 @@ func (c *Container) Kill(signal uint) er
+ // TODO allow specifying streams to attach to
+ // TODO investigate allowing exec without attaching
+ func (c *Container) Exec(tty, privileged bool, env, cmd []string, user, workDir string) error {
+-	var capList []string
+-
+ 	locked := false
+ 	if !c.batched {
+ 		locked = true
+@@ -287,22 +282,8 @@ func (c *Container) Exec(tty, privileged
+ 	if conState != ContainerStateRunning {
+ 		return errors.Errorf("cannot exec into container that is not running")
+ 	}
+-	if privileged || c.config.Privileged {
+-		capList = caps.GetAllCapabilities()
+-	}
+ 
+-	// If user was set, look it up in the container to get a UID to use on
+-	// the host
+-	hostUser := ""
+-	if user != "" {
+-		execUser, err := lookup.GetUserGroupInfo(c.state.Mountpoint, user, nil)
+-		if err != nil {
+-			return err
+-		}
+-
+-		// runc expects user formatted as uid:gid
+-		hostUser = fmt.Sprintf("%d:%d", execUser.Uid, execUser.Gid)
+-	}
++	isPrivileged := privileged || c.config.Privileged
+ 
+ 	// Generate exec session ID
+ 	// Ensure we don't conflict with an existing session ID
+@@ -324,10 +305,11 @@ func (c *Container) Exec(tty, privileged
+ 
+ 	logrus.Debugf("Creating new exec session in container %s with session id %s", c.ID(), sessionID)
+ 
+-	execCmd, err := c.runtime.ociRuntime.execContainer(c, cmd, capList, env, tty, workDir, hostUser, sessionID)
++	execCmd, processFile, err := c.runtime.ociRuntime.execContainer(c, cmd, env, tty, workDir, user, sessionID, isPrivileged)
+ 	if err != nil {
+ 		return errors.Wrapf(err, "error exec %s", c.ID())
+ 	}
++	defer os.Remove(processFile)
+ 	chWait := make(chan error)
+ 	go func() {
+ 		chWait <- execCmd.Wait()
+diff -up libpod-921f98f8795eb9fcb19ce581020cfdeff6dee09f/libpod/oci.go.orig libpod-921f98f8795eb9fcb19ce581020cfdeff6dee09f/libpod/oci.go
+--- libpod-921f98f8795eb9fcb19ce581020cfdeff6dee09f/libpod/oci.go.orig	2019-02-11 16:26:46.000000000 +0100
++++ libpod-921f98f8795eb9fcb19ce581020cfdeff6dee09f/libpod/oci.go	2021-02-12 10:38:48.768172416 +0100
+@@ -15,10 +15,12 @@ import (
+ 	"syscall"
+ 	"time"
+ 
++	"github.com/containers/libpod/pkg/lookup"
+ 	"github.com/containers/libpod/pkg/rootless"
+ 	"github.com/containers/libpod/pkg/util"
+ 	"github.com/coreos/go-systemd/activation"
+ 	"github.com/cri-o/ocicni/pkg/ocicni"
++	"github.com/docker/docker/daemon/caps"
+ 	spec "github.com/opencontainers/runtime-spec/specs-go"
+ 	"github.com/opencontainers/selinux/go-selinux"
+ 	"github.com/opencontainers/selinux/go-selinux/label"
+@@ -735,18 +737,23 @@ func (r *OCIRuntime) unpauseContainer(ct
+ // TODO: Add --detach support
+ // TODO: Convert to use conmon
+ // TODO: add --pid-file and use that to generate exec session tracking
+-func (r *OCIRuntime) execContainer(c *Container, cmd, capAdd, env []string, tty bool, cwd, user, sessionID string) (*exec.Cmd, error) {
++func (r *OCIRuntime) execContainer(c *Container, cmd, env []string, tty bool, cwd, user, sessionID string, privileged bool) (*exec.Cmd, string, error) {
+ 	if len(cmd) == 0 {
+-		return nil, errors.Wrapf(ErrInvalidArg, "must provide a command to execute")
++		return nil, "", errors.Wrapf(ErrInvalidArg, "must provide a command to execute")
+ 	}
+ 
+ 	if sessionID == "" {
+-		return nil, errors.Wrapf(ErrEmptyID, "must provide a session ID for exec")
++		return nil, "", errors.Wrapf(ErrEmptyID, "must provide a session ID for exec")
+ 	}
+ 
+ 	runtimeDir, err := util.GetRootlessRuntimeDir()
+ 	if err != nil {
+-		return nil, err
++		return nil, "", err
++	}
++
++	processFile, err := prepareProcessExec(c, cmd, env, tty, cwd, user, sessionID, privileged)
++	if err != nil {
++		return nil, "", err
+ 	}
+ 
+ 	args := []string{}
+@@ -756,34 +763,14 @@ func (r *OCIRuntime) execContainer(c *Co
+ 
+ 	args = append(args, "exec")
+ 
+-	if cwd != "" {
+-		args = append(args, "--cwd", cwd)
+-	}
++	args = append(args, "--process", processFile)
+ 
+ 	args = append(args, "--pid-file", c.execPidPath(sessionID))
+ 
+-	if tty {
+-		args = append(args, "--tty")
+-	} else {
+-		args = append(args, "--tty=false")
+-	}
+-
+-	if user != "" {
+-		args = append(args, "--user", user)
+-	}
+-
+ 	if c.config.Spec.Process.NoNewPrivileges {
+ 		args = append(args, "--no-new-privs")
+ 	}
+ 
+-	for _, cap := range capAdd {
+-		args = append(args, "--cap", cap)
+-	}
+-
+-	for _, envVar := range env {
+-		args = append(args, "--env", envVar)
+-	}
+-
+ 	// Append container ID and command
+ 	args = append(args, c.ID())
+ 	args = append(args, cmd...)
+@@ -797,10 +784,10 @@ func (r *OCIRuntime) execContainer(c *Co
+ 	execCmd.Env = append(execCmd.Env, fmt.Sprintf("XDG_RUNTIME_DIR=%s", runtimeDir))
+ 
+ 	if err := execCmd.Start(); err != nil {
+-		return nil, errors.Wrapf(err, "cannot start container %s", c.ID())
++		return nil, "", errors.Wrapf(err, "cannot start container %s", c.ID())
+ 	}
+ 
+-	return execCmd, nil
++	return execCmd, processFile, nil
+ }
+ 
+ // execStopContainer stops all active exec sessions in a container
+@@ -892,3 +879,110 @@ func (r *OCIRuntime) checkpointContainer
+ 	args = append(args, ctr.ID())
+ 	return utils.ExecCmdWithStdStreams(os.Stdin, os.Stdout, os.Stderr, nil, r.path, args...)
+ }
++
++// prepareProcessExec returns the path of the process.json used in runc exec -p.
++// Returns path to the created exec process file. This will need to be removed
++// by the caller when they're done, best effort.
++func prepareProcessExec(c *Container, cmd, env []string, tty bool, cwd, user, sessionID string, privileged bool) (string, error) {
++	filename := filepath.Join(c.bundlePath(), fmt.Sprintf("exec-process-%s", sessionID))
++	f, err := os.OpenFile(filename, os.O_CREATE|os.O_WRONLY, 0600)
++	if err != nil {
++		return "", err
++	}
++	defer f.Close()
++
++	pspec := c.config.Spec.Process
++	pspec.SelinuxLabel = c.config.ProcessLabel
++	pspec.Args = cmd
++	// We need to default this to false else it will inherit terminal as true
++	// from the container.
++	pspec.Terminal = false
++	if tty {
++		pspec.Terminal = true
++	}
++	if len(env) > 0 {
++		pspec.Env = append(pspec.Env, env...)
++	}
++
++	if cwd != "" {
++		pspec.Cwd = cwd
++
++	}
++
++	var addGroups []string
++	var sgids []uint32
++
++	// if the user is empty, we should inherit the user that the container is currently running with
++	if user == "" {
++		user = c.config.User
++		addGroups = c.config.Groups
++	}
++
++	execUser, err := lookup.GetUserGroupInfo(c.state.Mountpoint, user, nil)
++	if err != nil {
++		return "", err
++	}
++
++	if len(addGroups) > 0 {
++		sgids, err = lookup.GetContainerGroups(addGroups, c.state.Mountpoint, nil)
++		if err != nil {
++			return "", errors.Wrapf(err, "error looking up supplemental groups for container %s exec session %s", c.ID(), sessionID)
++		}
++	}
++
++	// If user was set, look it up in the container to get a UID to use on
++	// the host
++	if user != "" || len(sgids) > 0 {
++		if user != "" {
++			for _, sgid := range execUser.Sgids {
++				sgids = append(sgids, uint32(sgid))
++			}
++		}
++		processUser := spec.User{
++			UID:            uint32(execUser.Uid),
++			GID:            uint32(execUser.Gid),
++			AdditionalGids: sgids,
++		}
++
++		pspec.User = processUser
++	}
++
++	allCaps := caps.GetAllCapabilities()
++	pspec.Capabilities.Effective = []string{}
++	if privileged {
++		pspec.Capabilities.Bounding = allCaps
++	} else {
++		pspec.Capabilities.Bounding = []string{}
++	}
++	pspec.Capabilities.Inheritable = pspec.Capabilities.Bounding
++	if execUser.Uid == 0 {
++		pspec.Capabilities.Effective = pspec.Capabilities.Bounding
++		pspec.Capabilities.Permitted = pspec.Capabilities.Bounding
++		pspec.Capabilities.Ambient = pspec.Capabilities.Bounding
++	} else {
++		pspec.Capabilities.Permitted = pspec.Capabilities.Effective
++		pspec.Capabilities.Ambient = pspec.Capabilities.Effective
++	}
++
++	hasHomeSet := false
++	for _, s := range pspec.Env {
++		if strings.HasPrefix(s, "HOME=") {
++			hasHomeSet = true
++			break
++		}
++	}
++	if !hasHomeSet {
++		pspec.Env = append(pspec.Env, fmt.Sprintf("HOME=%s", execUser.Home))
++	}
++
++	processJSON, err := json.Marshal(pspec)
++	if err != nil {
++		return "", err
++	}
++
++	if err := ioutil.WriteFile(filename, processJSON, 0644); err != nil {
++		return "", err
++	}
++
++	return filename, nil
++}
+diff -up libpod-921f98f8795eb9fcb19ce581020cfdeff6dee09f/pkg/spec/spec.go.orig libpod-921f98f8795eb9fcb19ce581020cfdeff6dee09f/pkg/spec/spec.go
+--- libpod-921f98f8795eb9fcb19ce581020cfdeff6dee09f/pkg/spec/spec.go.orig	2019-02-11 16:26:46.000000000 +0100
++++ libpod-921f98f8795eb9fcb19ce581020cfdeff6dee09f/pkg/spec/spec.go	2021-02-12 10:38:48.768172416 +0100
+@@ -325,6 +325,14 @@ func CreateConfigToOCISpec(config *Creat
+ 		}
+ 	} else {
+ 		g.SetupPrivileged(true)
++		if config.User != "" {
++			user := strings.SplitN(config.User, ":", 2)[0]
++			if user != "root" && user != "0" {
++				g.Spec().Process.Capabilities.Effective = []string{}
++				g.Spec().Process.Capabilities.Permitted = []string{}
++				g.Spec().Process.Capabilities.Ambient = []string{}
++			}
++		}
+ 	}
+ 
+ 	// HANDLE SECCOMP