Copied from Fedora.

http://pkgs.fedoraproject.org/cgit/libwmf.git/tree/libwmf-0.2.8.4-CVE-2007-3477.patch

--- libwmf-0.2.8.4/src/extra/gd/gd.c
+++ libwmf-0.2.8.4/src/extra/gd/gd.c
@@ -1335,10 +1335,31 @@
   int w2, h2;
   w2 = w / 2;
   h2 = h / 2;
-  while (e < s)
-    {
-      e += 360;
-    }
+
+  if ((s % 360)  == (e % 360)) {
+         s = 0; e = 360;
+  } else {
+         if (s > 360) {
+                 s = s % 360;
+         }
+
+         if (e > 360) {
+                 e = e % 360;
+         }
+
+         while (s < 0) {
+                 s += 360;
+         }
+
+         while (e < s) {
+                 e += 360;
+         }
+
+         if (s == e) {
+                 s = 0; e = 360;
+         }
+  }
+
   for (i = s; (i <= e); i++)
     {
       int x, y;
ption>
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<div class='path'>path: <a href='/guix/log/?id=bd19f65a859a8401505fdba3d080c73f06998bac'>root</a>/<a href='/guix/log/gnu?id=bd19f65a859a8401505fdba3d080c73f06998bac'>gnu</a>/<a href='/guix/log/gnu/packages?id=bd19f65a859a8401505fdba3d080c73f06998bac'>packages</a>/<a href='/guix/log/gnu/packages/vpn.scm?id=bd19f65a859a8401505fdba3d080c73f06998bac'>vpn.scm</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/guix/log/gnu/packages/vpn.scm?id=bd19f65a859a8401505fdba3d080c73f06998bac&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2017-02-13 22:35:05 +0100'>2017-02-13</span></td><td><a href='/guix/commit/gnu/packages/vpn.scm?id=424b1ae76901c538457bd3c30d9d9cf67e79855f'>Merge branch 'master' into python-tests</a></td><td>Marius Bakke</td></tr>
<tr><td><span title='2017-01-13 19:13:35 +0100'>2017-01-13</span></td><td><a href='/guix/commit/gnu/packages/vpn.scm?id=fa3346b85265adf52ac985353dc7f67d71132939'>gnu: openvpn: Update to 2.4.0.</a><span class='msg-avail'>...</span></td><td>Julien Lepiller</td></tr>
<tr><td><span title='2017-01-13 10:21:17 -0500'>2017-01-13</span></td><td><a href='/guix/commit/gnu/packages/vpn.scm?id=cc0725914e74c4c4dec369f3e7cdb6f201b3fecd'>Merge branch 'master' into python-tests</a></td><td>Leo Famulari</td></tr>
<tr><td><span title='2017-01-02 21:48:48 +0200'>2017-01-02</span></td><td><a href='/guix/commit/gnu/packages/vpn.scm?id=8d2de491e58cdab4ba8afa2404f791587260af0b'>gnu: openvpn: Update to 2.3.14.</a><span class='msg-avail'>...</span></td><td>Efraim Flashner</td></tr>
<tr><td><span title='2016-12-19 04:13:59 +0100'>2016-12-19</span></td><td><a href='/guix/commit/gnu/packages/vpn.scm?id=c0b12a606b6af07e739b8326e032774245f38297'>gnu: sshoot: Fix tests.</a><span class='msg-avail'>...</span></td><td>Marius Bakke</td></tr>
<tr><td><span title='2016-12-15 19:31:45 +0100'>2016-12-15</span></td><td><a href='/guix/commit/gnu/packages/vpn.scm?id=426aecfd4825c67d2e5e37add3452c316203b719'>gnu: openconnect: Update to 7.08.</a><span class='msg-avail'>...</span></td><td>Tobias Geerinckx-Rice</td></tr>
<tr><td><span title='2016-12-11 11:58:41 +0100'>2016-12-11</span></td><td><a href='/guix/commit/gnu/packages/vpn.scm?id=1ce6f33b0c085940af29dc17e0f64db0a1dbaa99'>gnu: Add sshoot.</a><span class='msg-avail'>...</span></td><td>Tobias Geerinckx-Rice</td></tr>
<tr><td><span title='2016-12-11 11:58:40 +0100'>2016-12-11</span></td><td><a href='/guix/commit/gnu/packages/vpn.scm?id=5c863d57ff76403a70e2c98c473ee300ad052509'>gnu: Add sshuttle.</a><span class='msg-avail'>...</span></td><td>Tobias Geerinckx-Rice</td></tr>
<tr><td><span title='2016-11-15 11:06:15 +0200'>2016-11-15</span></td><td><a href='/guix/commit/gnu/packages/vpn.scm?id=3ded2761ab7b0bac199ccca0c0d7d910cd6488eb'>gnu: gvpe: Update to 3.0.</a><span class='msg-avail'>...</span></td><td>Efraim Flashner</td></tr>
<tr><td><span title='2016-10-23 14:16:39 -0400'>2016-10-23</span></td><td><a href='/guix/commit/gnu/packages/vpn.scm?id=ca0635b4ba1af6f4ef1f54cb13fe6cedd8c5aff3'>Merge branch 'master' into core-updates</a></td><td>Mark H Weaver</td></tr>
<tr><td><span title='2016-10-23 16:33:04 +0200'>2016-10-23</span></td><td><a href='/guix/commit/gnu/packages/vpn.scm?id=373e765ec31b1954c1ab279bd63fb7b1616de286'>gnu: openconnect: Update to 7.07.</a><span class='msg-avail'>...</span></td><td>Tobias Geerinckx-Rice</td></tr>
<tr><td><span title='2016-09-28 17:54:50 +0300'>2016-09-28</span></td><td><a href='/guix/commit/gnu/packages/vpn.scm?id=b94a6ca074f00b3f769933d074853d3c3ca50d00'>gnu: Add and use gettext-minimal.</a><span class='msg-avail'>...</span></td><td>Alex Kost</td></tr>