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3.6 KiB
JSON
1 line
3.6 KiB
JSON
{"schema_version":"1.9.0","id":"GHSA-3jhf-gxhr-q4cx","published":"2025-07-31T18:31:11Z","modified":"2026-07-07T17:56:48.902834224Z","aliases":["CVE-2025-53010","PYSEC-2026-1606"],"summary":"MaterialX Null Pointer Dereference in getShaderNodes due to Unchecked nodeGraph->getOutput return","details":"### Summary\n\nWhen parsing shader nodes in a MTLX file, the MaterialXCore code accesses a potentially null pointer, which can lead to crashes with maliciously crafted files.\n\n### Details\n\nIn `src/MaterialXCore/Material.cpp`, in function `getShaderNodes`, the following code fetches the output nodes for a given `nodegraph` input node:\n\n```cpp\n// SNIP...\n else if (input->hasNodeGraphString())\n {\n // Check upstream nodegraph connected to the input.\n // If no explicit output name given then scan all outputs on the nodegraph.\n ElementPtr parent = materialNode->getParent();\n NodeGraphPtr nodeGraph = parent->getChildOfType<NodeGraph>(input->getNodeGraphString());\n if (!nodeGraph)\n {\n continue;\n }\n vector<OutputPtr> outputs;\n if (input->hasOutputString())\n {\n outputs.push_back(nodeGraph->getOutput(input->getOutputString())); // <--- null ptr is returned\n }\n else\n {\n outputs = nodeGraph->getOutputs();\n }\n for (OutputPtr output : outputs)\n {\n NodePtr upstreamNode = output->getConnectedNode(); // <--- CRASHES HERE\n if (upstreamNode && !shaderNodeSet.count(upstreamNode))\n {\n if (!target.empty() && !upstreamNode->getNodeDef(target))\n {\n continue;\n }\n shaderNodeVec.push_back(upstreamNode);\n shaderNodeSet.insert(upstreamNode);\n }\n }\n }\n }\n// SNIP...\n```\n\nThe issues arise because the `nodeGraph->getOutput(input->getOutputString())` call can return a null pointer, therefore when trying to call `output->getConnectedNode()`, this results in a crash .\n\n\n### PoC\n\nPlease download `nullptr_getshadernodes.mltx` from the following link:\n\nhttps://github.com/ShielderSec/poc/tree/main/CVE-2025-53010\n\n`build/bin/MaterialXView --material nullptr_getshadernodes.mtlx`\n\n\n### Impact\n\nAn attacker could intentionally crash a target program that uses OpenEXR by sending a malicious MTLX file.","affected":[{"package":{"name":"materialx","ecosystem":"PyPI","purl":"pkg:pypi/materialx"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.39.2"},{"fixed":"1.39.3"}]}],"versions":["1.39.2"],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/07/GHSA-3jhf-gxhr-q4cx/GHSA-3jhf-gxhr-q4cx.json"}}],"references":[{"type":"WEB","url":"https://github.com/AcademySoftwareFoundation/MaterialX/security/advisories/GHSA-3jhf-gxhr-q4cx"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-53010"},{"type":"WEB","url":"https://github.com/AcademySoftwareFoundation/MaterialX/commit/e13344ba13326869d7820b444705f24d56fab73d"},{"type":"PACKAGE","url":"https://github.com/AcademySoftwareFoundation/MaterialX"},{"type":"WEB","url":"https://github.com/ShielderSec/poc/tree/main/CVE-2025-53010"}],"database_specific":{"cwe_ids":["CWE-476"],"github_reviewed":true,"github_reviewed_at":"2025-07-31T18:31:11Z","nvd_published_at":"2025-08-01T18:15:54Z","severity":"LOW"},"severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P"}]} |