PYSEC-2021-268
Record from OSV · Published August 12, 2021
tensorflow is fixed in c283e542a3f422420cfdb332414543b62fc4e4a5, 2.4.3 and 2.3.4 (PyPI)
TensorFlow is an end-to-end open source platform for machine learning. In affected versions the implementation of `tf.raw_ops.StringNGrams` is vulnerable to an integer overflow issue caused by converting a signed integer value to an unsigned one and then allocating memory based on this value. The [implementation](https://github.com/tensorflow/tensorflow/blob/8d72537c6abf5a44103b57b9c2e22c14f5f49698/tensorflow/core/kernels/string_ngrams_op.cc#L184) calls `reserve` on a `tstring` with a value that sometimes can be negative if user supplies negative `ngram_widths`. The `reserve` method calls `TF_TString_Reserve` which has an `unsigned long` argument for the size of the buffer. Hence, the implicit conversion transforms the negative value to a large integer. We have patched the issue in GitHub commit c283e542a3f422420cfdb332414543b62fc4e4a5. The 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.
Fixed versions
Upgrade to a fixed version or later. Language registries are listed first, then Linux distributions, then vendor products.
| Package | Ecosystem | Fixed in |
|---|---|---|
| tensorflow | PyPI | c283e542a3f422420cfdb332414543b62fc4e4a5, 2.4.3, 2.3.4 |
Risk scores
Affected products
| Vendor | Product | Versions |
|---|---|---|
| PyPI | tensorflow | 0, 2.3.0, 2.4.0 |
Timeline
- Aug 12, 2021 CVE Published
Query this with the API
The same record, from the CLI:
vulnetix vdb vuln PYSEC-2021-268
vulnetix vdb fixes PYSEC-2021-268Or with curl, using the org id and key from your account page:
curl -s -H "Authorization: ApiKey ${VULNETIX_ORG_ID}:${VULNETIX_API_KEY}" \
"https://api.vdb.vulnetix.com/v2/vuln/PYSEC-2021-268/fixes/registry"The Community plan is free and allows 50 queries a day. Get a free API key · API quickstart