From: Chee Yang Lee <chee.yang....@intel.com> fix CVE-2020-7211 for qemu slirp submodule see : https://www.openwall.com/lists/oss-security/2020/01/17/2 https://gitlab.freedesktop.org/slirp/libslirp/commit/14ec36e107a8c9af7d0a80c3571fe39b291ff1d4
(From OE-Core rev: 31362d739834377ac4ab880029c3e3dda0cd7698) Signed-off-by: Chee Yang Lee <chee.yang....@intel.com> Signed-off-by: Richard Purdie <richard.pur...@linuxfoundation.org> Signed-off-by: Adrian Bunk <b...@stusta.de> --- meta/recipes-devtools/qemu/qemu.inc | 1 + .../qemu/qemu/CVE-2020-7211.patch | 46 +++++++++++++++++++ 2 files changed, 47 insertions(+) create mode 100644 meta/recipes-devtools/qemu/qemu/CVE-2020-7211.patch diff --git a/meta/recipes-devtools/qemu/qemu.inc b/meta/recipes-devtools/qemu/qemu.inc index 119530f7e6..e18eaa0962 100644 --- a/meta/recipes-devtools/qemu/qemu.inc +++ b/meta/recipes-devtools/qemu/qemu.inc @@ -34,6 +34,7 @@ SRC_URI = "https://download.qemu.org/${BPN}-${PV}.tar.xz \ file://CVE-2020-7039-1.patch \ file://CVE-2020-7039-2.patch \ file://CVE-2020-7039-3.patch \ + file://CVE-2020-7211.patch \ " UPSTREAM_CHECK_REGEX = "qemu-(?P<pver>\d+(\.\d+)+)\.tar" diff --git a/meta/recipes-devtools/qemu/qemu/CVE-2020-7211.patch b/meta/recipes-devtools/qemu/qemu/CVE-2020-7211.patch new file mode 100644 index 0000000000..11be4c92e7 --- /dev/null +++ b/meta/recipes-devtools/qemu/qemu/CVE-2020-7211.patch @@ -0,0 +1,46 @@ +From 14ec36e107a8c9af7d0a80c3571fe39b291ff1d4 Mon Sep 17 00:00:00 2001 +From: Prasad J Pandit <p...@fedoraproject.org> +Date: Mon, 13 Jan 2020 17:44:31 +0530 +Subject: [PATCH] slirp: tftp: restrict relative path access + +tftp restricts relative or directory path access on Linux systems. +Apply same restrictions on Windows systems too. It helps to avoid +directory traversal issue. + +Fixes: https://bugs.launchpad.net/qemu/+bug/1812451 +Reported-by: Peter Maydell <peter.mayd...@linaro.org> +Signed-off-by: Prasad J Pandit <p...@fedoraproject.org> +Reviewed-by: Samuel Thibault <samuel.thiba...@ens-lyon.org> +Message-Id: <20200113121431.156708-1-ppan...@redhat.com> + +Upstream-Status: Backport [https://gitlab.freedesktop.org/slirp/libslirp/-/commit/14ec36e107a8c9af7d0a80c3571fe39b291ff1d4.patch] +CVE: CVE-2020-7211 +Signed-off-by: Chee Yang Lee <chee.yang....@intel.com> + +--- + slirp/src/tftp.c | 9 +++++++-- + 1 file changed, 7 insertions(+), 2 deletions(-) + +diff --git a/slirp/src/tftp.c b/slirp/src/tftp.c +index 093c2e0..e52e71b 100644 +--- a/slirp/src/tftp.c ++++ b/slirp/src/tftp.c +@@ -344,8 +344,13 @@ static void tftp_handle_rrq(Slirp *slirp, struct sockaddr_storage *srcsas, + k += 6; /* skipping octet */ + + /* do sanity checks on the filename */ +- if (!strncmp(req_fname, "../", 3) || +- req_fname[strlen(req_fname) - 1] == '/' || strstr(req_fname, "/../")) { ++ if ( ++#ifdef G_OS_WIN32 ++ strstr(req_fname, "..\\") || ++ req_fname[strlen(req_fname) - 1] == '\\' || ++#endif ++ strstr(req_fname, "../") || ++ req_fname[strlen(req_fname) - 1] == '/') { + tftp_send_error(spt, 2, "Access violation", tp); + return; + } +-- +2.24.1 + -- 2.17.1
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