user/exiv2: patch CVE-2019-17402

1 files changed, 73 insertions, 0 deletions

diff --git a/user/exiv2/CVE-2019-17402.patch b/user/exiv2/CVE-2019-17402.patch
new file mode 100644
index 000000000..f54b511b0
--- /dev/null
+++ b/user/exiv2/CVE-2019-17402.patch
@@ -0,0 +1,73 @@
+From 683451567284005cd24e1ccb0a76ca401000968b Mon Sep 17 00:00:00 2001
+From: Jens Georg <mail@jensge.org>
+Date: Sun, 6 Oct 2019 15:05:20 +0200
+Subject: [PATCH 1/2] crwimage: Check offset and size against total size
+
+Corrupted or specially crafted CRW images might exceed the overall
+buffersize.
+
+Fixes #1019
+---
+ src/crwimage_int.cpp | 3 +++
+ 1 file changed, 3 insertions(+)
+
+diff --git a/src/crwimage_int.cpp b/src/crwimage_int.cpp
+index 2474baace..3315b86d7 100644
+--- a/src/crwimage_int.cpp
++++ b/src/crwimage_int.cpp
+@@ -270,6 +270,9 @@ namespace Exiv2 {
+ #ifdef EXIV2_DEBUG_MESSAGES
+         std::cout << "Reading directory 0x" << std::hex << tag() << "\n";
+ #endif
++        if (this->offset() + this->size() > size)
++            throw Error(kerOffsetOutOfRange);
++
+         readDirectory(pData + offset(), this->size(), byteOrder);
+ #ifdef EXIV2_DEBUG_MESSAGES
+         std::cout << "<---- 0x" << std::hex << tag() << "\n";
+
+From 73b874fb14d02578f876aa7dd404cf7c07b6dc4e Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Dan=20=C4=8Cerm=C3=A1k?= <dan.cermak@cgc-instruments.com>
+Date: Mon, 7 Oct 2019 23:25:00 +0200
+Subject: [PATCH 2/2] [tests] Add regression test for #1019
+
+---
+ test/data/POC-file_issue_1019            | Bin 0 -> 10078 bytes
+ tests/bugfixes/github/test_issue_1019.py |  14 ++++++++++++++
+ tests/suite.conf                         |   1 +
+ 3 files changed, 15 insertions(+)
+ create mode 100755 test/data/POC-file_issue_1019
+ create mode 100644 tests/bugfixes/github/test_issue_1019.py
+
+diff --git a/tests/bugfixes/github/test_issue_1019.py b/tests/bugfixes/github/test_issue_1019.py
+new file mode 100644
+index 000000000..c2682f901
+--- /dev/null
++++ b/tests/bugfixes/github/test_issue_1019.py
+@@ -0,0 +1,14 @@
++from system_tests import CaseMeta, path
++
++
++class OverreadInCiffDirectoryReadDirectory(metaclass=CaseMeta):
++
++    filename = path("$data_path/POC-file_issue_1019")
++    commands = ["$exiv2 -pv $filename"]
++    stdout = [""]
++    stderr = [
++        """$exiv2_exception_message $filename:
++$kerOffsetOutOfRange
++"""
++    ]
++    retval = [1]
+diff --git a/tests/suite.conf b/tests/suite.conf
+index 5b31930c1..dab7427b3 100644
+--- a/tests/suite.conf
++++ b/tests/suite.conf
+@@ -19,6 +19,7 @@ largeiptc_test: ${ENV:exiv2_path}/largeiptc-test${ENV:binary_extension}
+ easyaccess_test: ${ENV:exiv2_path}/easyaccess-test${ENV:binary_extension}
+ 
+ [variables]
++kerOffsetOutOfRange: Offset out of range
+ kerFailedToReadImageData: Failed to read image data
+ kerCorruptedMetadata: corrupted image metadata
+ kerInvalidMalloc: invalid memory allocation request