From 1e09642382ef914c5178cedbbf86ac4a9b982a48 Mon Sep 17 00:00:00 2001 From: Kim Kulling Date: Fri, 30 Aug 2024 19:43:39 +0200 Subject: [PATCH] Ply-Importer: Fix vulnerability (#5739) --- code/AssetLib/Ply/PlyLoader.cpp | 3 +++ test/models/PLY/payload_JVN42386607 | 31 +++++++++++++++++++++++++++++ test/unit/utPLYImportExport.cpp | 6 ++++++ 3 files changed, 40 insertions(+) create mode 100644 test/models/PLY/payload_JVN42386607 diff --git a/code/AssetLib/Ply/PlyLoader.cpp b/code/AssetLib/Ply/PlyLoader.cpp index b211818df..5b3d3a699 100644 --- a/code/AssetLib/Ply/PlyLoader.cpp +++ b/code/AssetLib/Ply/PlyLoader.cpp @@ -448,6 +448,9 @@ void PLYImporter::LoadVertex(const PLY::Element *pcElement, const PLY::ElementIn mGeneratedMesh->mNumVertices = pcElement->NumOccur; mGeneratedMesh->mVertices = new aiVector3D[mGeneratedMesh->mNumVertices]; } + if (pos >= mGeneratedMesh->mNumVertices) { + throw DeadlyImportError("Invalid .ply file: Too many vertices"); + } mGeneratedMesh->mVertices[pos] = vOut; diff --git a/test/models/PLY/payload_JVN42386607 b/test/models/PLY/payload_JVN42386607 new file mode 100644 index 000000000..e372bf324 --- /dev/null +++ b/test/models/PLY/payload_JVN42386607 @@ -0,0 +1,31 @@ +ply +format ascii +element vertex 7 +property int x +property int nx +element vertex 9 +property float x +property float y +property float z +element face 3 +property list int8 int vertex_index +end_header +8 8 +8 8 +8 8 +8 8 +8 8 +8 8 +8 8 +9 9 9 +9 9 9 +9 9 9 +9 9 9 +9 9 9 +9 9 9 +9 9 9 +0 2.4902982818549262e-43 0 +-3.418291644037699e+33 4.591734678053128e-41 0 +42 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 +42 4143600380 32767 4143600380 32767 4143600380 32767 4143600380 32767 4143600380 32767 4143600380 32767 4143600380 32767 4143600380 32767 4143600380 32767 4143600380 32767 4143600380 32767 4143600380 32767 4143600380 32767 4143600380 32767 4143600380 32767 4143600380 32767 4143600380 32767 4143600380 32767 4143600380 32767 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\ No newline at end of file diff --git a/test/unit/utPLYImportExport.cpp b/test/unit/utPLYImportExport.cpp index e748a40cf..54d7e4328 100644 --- a/test/unit/utPLYImportExport.cpp +++ b/test/unit/utPLYImportExport.cpp @@ -203,3 +203,9 @@ TEST_F(utPLYImportExport, parseInvalid) { const aiScene *scene = importer.ReadFile(ASSIMP_TEST_MODELS_DIR "/invalid/crash-30d6d0f7c529b3b66b4131700b7a4580cd7082df.ply", 0); EXPECT_EQ(nullptr, scene); } + +TEST_F(utPLYImportExport, payload_JVN42386607) { + Assimp::Importer importer; + const aiScene *scene = importer.ReadFile(ASSIMP_TEST_MODELS_DIR "/PLY/payload_JVN42386607", 0); + EXPECT_EQ(nullptr, scene); +} \ No newline at end of file