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# ./pullrev.sh 1667246
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https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2015-0248
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http://svn.apache.org/viewvc?view=revision&revision=1667246
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--- subversion-1.7.14/subversion/mod_dav_svn/reports/get-location-segments.c
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+++ subversion-1.7.14/subversion/mod_dav_svn/reports/get-location-segments.c
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@@ -181,17 +181,36 @@
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                                   "Not all parameters passed.",
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                                   SVN_DAV_ERROR_NAMESPACE,
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                                   SVN_DAV_ERROR_TAG);
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-  if (SVN_IS_VALID_REVNUM(start_rev)
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-      && SVN_IS_VALID_REVNUM(end_rev)
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-      && (end_rev > start_rev))
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+
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+  /* No START_REV or PEG_REVISION?  We'll use HEAD. */
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+  if (!SVN_IS_VALID_REVNUM(start_rev) || !SVN_IS_VALID_REVNUM(peg_revision))
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+    {
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+      svn_revnum_t youngest;
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+
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+      serr = svn_fs_youngest_rev(&youngest, resource->info->repos->fs,
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+                                 resource->pool);
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+      if (serr != NULL)
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+        return dav_svn__convert_err(serr, HTTP_INTERNAL_SERVER_ERROR,
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+                                    "Could not determine youngest revision",
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+                                    resource->pool);
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+
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+      if (!SVN_IS_VALID_REVNUM(start_rev))
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+        start_rev = youngest;
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+      if (!SVN_IS_VALID_REVNUM(peg_revision))
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+        peg_revision = youngest;
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+    }
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+
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+  /* No END_REV?  We'll use 0. */
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+  if (!SVN_IS_VALID_REVNUM(end_rev))
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+    end_rev = 0;
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+
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+  if (end_rev > start_rev)
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     return dav_svn__new_error_tag(resource->pool, HTTP_BAD_REQUEST, 0,
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                                   "End revision must not be younger than "
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                                   "start revision",
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                                   SVN_DAV_ERROR_NAMESPACE,
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                                   SVN_DAV_ERROR_TAG);
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-  if (SVN_IS_VALID_REVNUM(peg_revision)
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-      && SVN_IS_VALID_REVNUM(start_rev)
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-      && (start_rev > peg_revision))
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+  if (start_rev > peg_revision)
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     return dav_svn__new_error_tag(resource->pool, HTTP_BAD_REQUEST, 0,
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                                   "Start revision must not be younger than "
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                                   "peg revision",
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--- subversion-1.7.14/subversion/svnserve/serve.c
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+++ subversion-1.7.14/subversion/svnserve/serve.c
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@@ -2266,10 +2266,31 @@
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   abs_path = svn_fspath__join(b->fs_path->data, relative_path, pool);
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-  if (SVN_IS_VALID_REVNUM(start_rev)
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-      && SVN_IS_VALID_REVNUM(end_rev)
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-      && (end_rev > start_rev))
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+  SVN_ERR(trivial_auth_request(conn, pool, b));
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+  SVN_ERR(log_command(baton, conn, pool, "%s",
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+                      svn_log__get_location_segments(abs_path, peg_revision,
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+                                                     start_rev, end_rev,
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+                                                     pool)));
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+
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+  /* No START_REV or PEG_REVISION?  We'll use HEAD. */
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+  if (!SVN_IS_VALID_REVNUM(start_rev) || !SVN_IS_VALID_REVNUM(peg_revision))
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     {
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+      svn_revnum_t youngest;
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+
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+      SVN_CMD_ERR(svn_fs_youngest_rev(&youngest, b->fs, pool));
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+
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+      if (!SVN_IS_VALID_REVNUM(start_rev))
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+        start_rev = youngest;
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+      if (!SVN_IS_VALID_REVNUM(peg_revision))
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+        peg_revision = youngest;
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+    }
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+
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+  /* No END_REV?  We'll use 0. */
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+  if (!SVN_IS_VALID_REVNUM(end_rev))
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+    end_rev = 0;
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+
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+  if (end_rev > start_rev)
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+    {
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       err = svn_error_createf(SVN_ERR_INCORRECT_PARAMS, NULL,
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                               "Get-location-segments end revision must not be "
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                               "younger than start revision");
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@@ -2276,9 +2297,7 @@
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       return log_fail_and_flush(err, b, conn, pool);
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     }
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-  if (SVN_IS_VALID_REVNUM(peg_revision)
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-      && SVN_IS_VALID_REVNUM(start_rev)
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-      && (start_rev > peg_revision))
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+  if (start_rev > peg_revision)
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     {
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       err = svn_error_createf(SVN_ERR_INCORRECT_PARAMS, NULL,
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                               "Get-location-segments start revision must not "
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@@ -2286,12 +2305,6 @@
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       return log_fail_and_flush(err, b, conn, pool);
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     }
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-  SVN_ERR(trivial_auth_request(conn, pool, b));
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-  SVN_ERR(log_command(baton, conn, pool, "%s",
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-                      svn_log__get_location_segments(abs_path, peg_revision,
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-                                                     start_rev, end_rev,
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-                                                     pool)));
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-
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   /* All the parameters are fine - let's perform the query against the
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    * repository. */
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