CVE-2018-20685 (#1665786)

openssh-7.9p1-CVE-2018-20685.patch

@@ -0,0 +1,28 @@
+From 6010c0303a422a9c5fa8860c061bf7105eb7f8b2 Mon Sep 17 00:00:00 2001
+From: "djm@openbsd.org" <djm@openbsd.org>
+Date: Fri, 16 Nov 2018 03:03:10 +0000
+Subject: [PATCH] upstream: disallow empty incoming filename or ones that refer
+ to the
+
+current directory; based on report/patch from Harry Sintonen
+
+OpenBSD-Commit-ID: f27651b30eaee2df49540ab68d030865c04f6de9
+---
+ scp.c | 5 +++--
+ 1 file changed, 3 insertions(+), 2 deletions(-)
+
+diff --git a/scp.c b/scp.c
+index 60682c687..4f3fdcd3d 100644
+--- a/scp.c
++++ b/scp.c
+@@ -1106,7 +1106,8 @@ sink(int argc, char **argv)
+ 			SCREWUP("size out of range");
+ 		size = (off_t)ull;
+ 
+-		if ((strchr(cp, '/') != NULL) || (strcmp(cp, "..") == 0)) {
++		if (*cp == '\0' || strchr(cp, '/') != NULL ||
++		    strcmp(cp, ".") == 0 || strcmp(cp, "..") == 0) {
+ 			run_err("error: unexpected filename: %s", cp);
+ 			exit(1);
+ 		}
+

openssh.spec

@@ -231,6 +231,8 @@ Patch954: openssh-7.9p1-disable-sha1.patch
 Patch955: openssh-7.9p1-match-final.patch
 # Backport more after-release fixes (#1665611)
 Patch956: openssh-7.9p1-backports.patch
+# Backport patch for CVE-2018-20685 (#1665786)
+Patch957: openssh-7.9p1-CVE-2018-20685.patch
 
 License: BSD
 Group: Applications/Internet
@@ -457,6 +459,7 @@ popd
 %patch954 -p1 -b .disable-sha1
 %patch955 -p1 -b .match-final
 %patch956 -p1 -b .backports
+%patch957 -p1 -b .CVE-2018-20685
 
 %patch200 -p1 -b .audit
 %patch201 -p1 -b .audit-race