Vulnerability · Published May 14, 2021 · Assigned by GitHub_M
CVE-2021-29581Segfault in `CTCBeamSearchDecoder`
Low 2.5
In plain English
A low-severity security flaw in tensorflow from tensorflow. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 9% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
TensorFlow is an end-to-end open source platform for machine learning. Due to lack of validation in `tf.raw_ops.CTCBeamSearchDecoder`, an attacker can trigger denial of service via segmentation faults. The implementation(https://github.com/tensorflow/tensorflow/blob/a74768f8e4efbda4def9f16ee7e13cf3922ac5f7/tensorflow/core/kernels/ctc_decoder_ops.cc#L68-L79) fails to detect cases when the input tensor is empty and proceeds to read data from a null buffer. The fix will be included in TensorFlow 2.5.0. We will also cherrypick this commit on TensorFlow 2.4.2, TensorFlow 2.3.3, TensorFlow 2.2.3 and TensorFlow 2.1.4, as these are also affected and still in supported range.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| PyPI | tensorflow | 2.3.3 | GHSA-vq2r-5xvm-3hc3 |
| PyPI | tensorflow | 2.4.2 | GHSA-vq2r-5xvm-3hc3 |
| PyPI | tensorflow | 2.1.4 | GHSA-vq2r-5xvm-3hc3 |
| PyPI | tensorflow | 2.1.4, 2.2.3, 2.3.3, 2.4.2 | PYSEC-2021-218 |
| PyPI | tensorflow | 2.2.3 | GHSA-vq2r-5xvm-3hc3 |
| PyPI | tensorflow-cpu | 2.4.2 | GHSA-vq2r-5xvm-3hc3 |
| PyPI | tensorflow-cpu | 2.1.4 | GHSA-vq2r-5xvm-3hc3 |
| PyPI | tensorflow-cpu | 2.2.3 | GHSA-vq2r-5xvm-3hc3 |
| PyPI | tensorflow-cpu | 2.3.3 | GHSA-vq2r-5xvm-3hc3 |
| PyPI | tensorflow-cpu | 2.1.4, 2.2.3, 2.3.3, 2.4.2 | PYSEC-2021-509 |
| PyPI | tensorflow-gpu | 2.3.3 | GHSA-vq2r-5xvm-3hc3 |
| PyPI | tensorflow-gpu | 2.4.2 | GHSA-vq2r-5xvm-3hc3 |
| PyPI | tensorflow-gpu | 2.1.4 | GHSA-vq2r-5xvm-3hc3 |
| PyPI | tensorflow-gpu | 2.1.4, 2.2.3, 2.3.3, 2.4.2 | PYSEC-2021-707 |
| PyPI | tensorflow-gpu | 2.2.3 | GHSA-vq2r-5xvm-3hc3 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| tensorflow | tensorflow | < 2.1.4>= 2.2.0, < 2.2.3>= 2.3.0, < 2.3.3>= 2.4.0, < 2.4.2 |
Weakness: CWE-908 · Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L