[Buildroot] [git commit branch/2019.02.x] package/qt5base: add upstream security patch for LTS variant

[Peter Korsgaard]

commit: https://git.buildroot.net/buildroot/commit/?id=14d3aba2e3840dfe4784d854eba9300f8091f5dc
branch: https://git.buildroot.net/buildroot/commit/?id=refs/heads/2019.02.x

Fixed the following security issue:

- CVE-2020-0569: QPluginLoader in Qt versions 5.0.0 through 5.13.2 would
  search for certain plugins first on the current working directory of the
  application, which allows an attacker that can place files in the file
  system and influence the working directory of Qt-based applications to
  load and execute malicious code.  This issue was verified on macOS and
  Linux and probably affects all other Unix operating systems.  This issue
  does not affect Windows.

For details, see the advisory:
https://www.openwall.com/lists/oss-security/2020/01/30/1

Signed-off-by: Peter Seiderer <ps.report at gmx.net>
[Peter: extend commit message]
Signed-off-by: Peter Korsgaard <peter at korsgaard.com>
(cherry picked from commit c0607b38c862a6bd556d6f8c1a7d503bab9ede75)
Signed-off-by: Peter Korsgaard <peter at korsgaard.com>
---
 .../0005-Do-not-load-plugin-from-the-PWD.patch     | 32 ++++++++++++++++++++++
 1 file changed, 32 insertions(+)

diff --git a/package/qt5/qt5base/5.6.3/0005-Do-not-load-plugin-from-the-PWD.patch b/package/qt5/qt5base/5.6.3/0005-Do-not-load-plugin-from-the-PWD.patch
new file mode 100644
index 0000000000..4acd42f005
--- /dev/null
+++ b/package/qt5/qt5base/5.6.3/0005-Do-not-load-plugin-from-the-PWD.patch
@@ -0,0 +1,32 @@
+From bf131e8d2181b3404f5293546ed390999f760404 Mon Sep 17 00:00:00 2001
+From: Olivier Goffart <ogoffart at woboq.com>
+Date: Fri, 8 Nov 2019 11:30:40 +0100
+Subject: [PATCH] Do not load plugin from the $PWD
+
+I see no reason why this would make sense to look for plugins in the current
+directory. And when there are plugins there, it may actually be wrong
+
+Change-Id: I5f5aa168021fedddafce90effde0d5762cd0c4c5
+Reviewed-by: Thiago Macieira <thiago.macieira at intel.com>
+
+Upstream: https://code.qt.io/cgit/qt/qtbase.git/commit/?id=bf131e8d2181b3404f5293546ed390999f760404
+Signed-off-by: Peter Seiderer <ps.report at gmx.net>
+---
+ src/corelib/plugin/qpluginloader.cpp | 1 -
+ 1 file changed, 1 deletion(-)
+
+diff --git a/src/corelib/plugin/qpluginloader.cpp b/src/corelib/plugin/qpluginloader.cpp
+index cadff4f32b..c2443dbdda 100644
+--- a/src/corelib/plugin/qpluginloader.cpp
++++ b/src/corelib/plugin/qpluginloader.cpp
+@@ -305,7 +305,6 @@ static QString locatePlugin(const QString& fileName)
+         paths.append(fileName.left(slash)); // don't include the '/'
+     } else {
+         paths = QCoreApplication::libraryPaths();
+-        paths.prepend(QStringLiteral(".")); // search in current dir first
+     }
+ 
+     for (const QString &path : qAsConst(paths)) {
+-- 
+2.25.0
+