diff --git a/security/ncrack/files/patch-opensshlib_configure b/security/ncrack/files/patch-opensshlib_configure
new file mode 100644
index 000000000000..30ecb91f9b42
--- /dev/null
+++ b/security/ncrack/files/patch-opensshlib_configure
@@ -0,0 +1,11 @@
+--- opensshlib/configure.orig	2019-08-24 22:25:32 UTC
++++ opensshlib/configure
+@@ -8922,7 +8922,7 @@ main ()
+ 
+ 	int a=0, b=0, c=0, d=0, n, v;
+ 	n = sscanf(ZLIB_VERSION, "%d.%d.%d.%d", &a, &b, &c, &d);
+-	if (n != 3 && n != 4)
++	if (n < 2 || n > 4)
+ 		exit(1);
+ 	v = a*1000000 + b*10000 + c*100 + d;
+ 	fprintf(stderr, "found zlib version %s (%d)\n", ZLIB_VERSION, v);