Fix for CVE-2017-18248 (#1561296)

cups-delete_invalid_attrs.patch

@@ -0,0 +1,54 @@
+diff --git a/scheduler/ipp.c b/scheduler/ipp.c
+index 02dc392..0fc2d07 100644
+--- a/scheduler/ipp.c
++++ b/scheduler/ipp.c
+@@ -1615,15 +1615,30 @@
+                     _("Bad job-name value: Wrong type or count."));
+     if ((attr = ippCopyAttribute(con->response, attr, 0)) != NULL)
+       attr->group_tag = IPP_TAG_UNSUPPORTED_GROUP;
++
++    if (StrictConformance)
+     return (NULL);
++
++    /* Don't use invalid attribute */
++    ippDeleteAttribute(con->request, attr);
++
++    ippAddString(con->request, IPP_TAG_JOB, IPP_TAG_NAME, "job-name", NULL, "Untitled");
+   }
+   else if (!ippValidateAttribute(attr))
+   {
+     send_ipp_status(con, IPP_ATTRIBUTES, _("Bad job-name value: %s"),
+                     cupsLastErrorString());
++
+     if ((attr = ippCopyAttribute(con->response, attr, 0)) != NULL)
+       attr->group_tag = IPP_TAG_UNSUPPORTED_GROUP;
++
++    if (StrictConformance)
+     return (NULL);
++
++    /* Don't use invalid attribute */
++    ippDeleteAttribute(con->request, attr);
++
++    ippAddString(con->request, IPP_TAG_JOB, IPP_TAG_NAME, "job-name", NULL, "Untitled");
+   }
+ 
+   attr = ippFindAttribute(con->request, "requesting-user-name", IPP_TAG_NAME);
+@@ -1631,9 +1646,17 @@ add_job(cupsd_client_t  *con,		/* I - Client connection */
+   if (attr && !ippValidateAttribute(attr))
+   {
+     send_ipp_status(con, IPP_ATTRIBUTES, _("Bad requesting-user-name value: %s"), cupsLastErrorString());
++
+     if ((attr = ippCopyAttribute(con->response, attr, 0)) != NULL)
+       attr->group_tag = IPP_TAG_UNSUPPORTED_GROUP;
+-    return (NULL);
++
++    if (StrictConformance)
++      return (NULL);
++
++    /* Don't use invalid attribute */
++    ippDeleteAttribute(con->request, attr);
++
++    attr = ippAddString(con->request, IPP_TAG_JOB, IPP_TAG_NAME, "reqeusting-user-name", NULL, "anonymous");
+   }
+ 
+ #ifdef WITH_LSPP

cups.spec

@@ -15,7 +15,7 @@ Summary: CUPS printing system
 Name: cups
 Epoch: 1
 Version: 2.2.6
-Release: 11%{?dist}
+Release: 12%{?dist}
 License: GPLv2
 Url: http://www.cups.org/
 Source0: https://github.com/apple/cups/releases/download/v%{VERSION}/cups-%{VERSION}-source.tar.gz
@@ -62,6 +62,7 @@ Patch36: cups-web-devices-timeout.patch
 Patch37: cups-synconclose.patch
 Patch38: cups-ypbind.patch
 Patch39: cups-moved-logs.patch
+Patch40: cups-delete_invalid_attrs.patch
 
 Patch100: cups-lspp.patch
 
@@ -267,6 +268,8 @@ Sends IPP requests to the specified URI and tests and/or displays the results.
 # Move log files into journal (bug #1519331)
 %patch39 -p1 -b .moved-logs
 
+%patch40 -p1 -b .dbus_notify
+
 sed -i -e '1iMaxLogSize 0' conf/cupsd.conf.in
 
 # Log to the system journal by default (bug #1078781, bug #1519331).
@@ -657,6 +660,9 @@ rm -f %{cups_serverbin}/backend/smb
 %{_mandir}/man5/ipptoolfile.5.gz
 
 %changelog
+* Wed Mar 28 2018 Pavel Zhukov <pzhukov@redhat.com> - 1:2.2.6-12
+- Fix for CVE-2017-18248
+
 * Wed Feb 28 2018 Zdenek Dohnal <zdohnal@redhat.com> - 1:2.2.6-11
 - remake of 1499261