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authorGravatar Baruch Siach <baruch@tkos.co.il>2019-01-15 13:17:53 +0200
committerGravatar Peter Korsgaard <peter@korsgaard.com>2019-01-15 19:49:22 +0100
commit8233c666124890fff713ecb254993b52b1fa7674 (patch)
tree4905511788912541ee0481127c9eb76256f6df0a /package
parentbd0bb8b8f6c975de3c926359990da9308d08a9e0 (diff)
downloadbuildroot-8233c666124890fff713ecb254993b52b1fa7674.tar.gz
buildroot-8233c666124890fff713ecb254993b52b1fa7674.tar.bz2
package/openssh: add upstream security fix
Fixes CVE-2018-20685: The scp client allows server to modify permissions of the target directory by using empty ("D0777 0 \n") or dot ("D0777 0 .\n") directory name. The bug reporter lists a number of related vulnerabilities that are not fixed yet: https://sintonen.fi/advisories/scp-client-multiple-vulnerabilities.txt Signed-off-by: Baruch Siach <baruch@tkos.co.il> Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
Diffstat (limited to 'package')
-rw-r--r--package/openssh/0001-upstream-disallow-empty-incoming-filename-or-ones-th.patch39
1 files changed, 39 insertions, 0 deletions
diff --git a/package/openssh/0001-upstream-disallow-empty-incoming-filename-or-ones-th.patch b/package/openssh/0001-upstream-disallow-empty-incoming-filename-or-ones-th.patch
new file mode 100644
index 0000000000..2b5a958d13
--- /dev/null
+++ b/package/openssh/0001-upstream-disallow-empty-incoming-filename-or-ones-th.patch
@@ -0,0 +1,39 @@
+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
+Signed-off-by: Baruch Siach <baruch@tkos.co.il>
+---
+Upstream status (openssh-portable): commit 6010c0303a422
+
+ scp.c | 5 +++--
+ 1 file changed, 3 insertions(+), 2 deletions(-)
+
+diff --git a/scp.c b/scp.c
+index 60682c68769b..4f3fdcd3db89 100644
+--- a/scp.c
++++ b/scp.c
+@@ -1,4 +1,4 @@
+-/* $OpenBSD: scp.c,v 1.197 2018/06/01 04:31:48 dtucker Exp $ */
++/* $OpenBSD: scp.c,v 1.198 2018/11/16 03:03:10 djm Exp $ */
+ /*
+ * scp - secure remote copy. This is basically patched BSD rcp which
+ * uses ssh to do the data transfer (instead of using rcmd).
+@@ -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);
+ }
+--
+2.20.1
+