diff options
| author | Aravinda VK <avishwan@redhat.com> | 2016-06-22 14:57:44 +0530 |
|---|---|---|
| committer | Jeff Darcy <jdarcy@redhat.com> | 2016-06-27 10:11:43 -0700 |
| commit | 888de8851e718d8e3117e47fa35cfc075b998f62 (patch) | |
| tree | 22866fd0dab4f4681faccd9677b5631582eed7c5 | |
| parent | 04d95b93f1b0011920a15994059c3b17cf04e434 (diff) | |
glusterd/geo-rep: Add relative path validation to copy file command
Added validation for input file, command fails if input file path is
relative path pointing outside of GLUSTERD_WORKDIR.
BUG: 1348897
Change-Id: I329d43ebed69bfe9fe03d6be70dc8c78a605ffc5
Signed-off-by: Aravinda VK <avishwan@redhat.com>
Reviewed-on: http://review.gluster.org/14772
Smoke: Gluster Build System <jenkins@build.gluster.org>
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
Reviewed-by: Jeff Darcy <jdarcy@redhat.com>
| -rw-r--r-- | xlators/mgmt/glusterd/src/glusterd-geo-rep.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/xlators/mgmt/glusterd/src/glusterd-geo-rep.c b/xlators/mgmt/glusterd/src/glusterd-geo-rep.c index 13407c22df9..57b50934489 100644 --- a/xlators/mgmt/glusterd/src/glusterd-geo-rep.c +++ b/xlators/mgmt/glusterd/src/glusterd-geo-rep.c @@ -2395,6 +2395,9 @@ glusterd_op_stage_copy_file (dict_t *dict, char **op_errstr) glusterd_conf_t *priv = NULL; struct stat stbuf = {0,}; xlator_t *this = NULL; + char workdir[PATH_MAX] = {0,}; + char realpath_filename[PATH_MAX] = {0,}; + char realpath_workdir[PATH_MAX] = {0,}; this = THIS; GF_ASSERT (this); @@ -2439,6 +2442,37 @@ glusterd_op_stage_copy_file (dict_t *dict, char **op_errstr) snprintf (abs_filename, sizeof(abs_filename), "%s/%s", priv->workdir, filename); + if (!realpath (priv->workdir, realpath_workdir)) { + snprintf (errmsg, sizeof (errmsg), "Failed to get " + "realpath of %s: %s", priv->workdir, + strerror (errno)); + *op_errstr = gf_strdup (errmsg); + ret = -1; + goto out; + } + + if (!realpath (abs_filename, realpath_filename)) { + snprintf (errmsg, sizeof (errmsg), "Failed to get " + "realpath of %s: %s", filename, + strerror (errno)); + *op_errstr = gf_strdup (errmsg); + ret = -1; + goto out; + } + + /* Add Trailing slash to workdir, without slash strncmp + will succeed for /var/lib/glusterd_bad */ + snprintf (workdir, sizeof(workdir), "%s/", realpath_workdir); + + /* Protect against file copy outside $workdir */ + if (strncmp (workdir, realpath_filename, strlen (workdir))) { + snprintf (errmsg, sizeof (errmsg), "Source file" + " is outside of %s directory", priv->workdir); + *op_errstr = gf_strdup (errmsg); + ret = -1; + goto out; + } + ret = sys_lstat (abs_filename, &stbuf); if (ret) { snprintf (errmsg, sizeof (errmsg), "Source file" |