CVE-2021-41203
Missing validation during checkpoint loading
Description
TensorFlow is an open source platform for machine learning. In affected versions an attacker can trigger undefined behavior, integer overflows, segfaults and `CHECK`-fail crashes if they can change saved checkpoints from outside of TensorFlow. This is because the checkpoints loading infrastructure is missing validation for invalid file formats. The fixes will be included in TensorFlow 2.7.0. We will also cherrypick these commits on TensorFlow 2.6.1, TensorFlow 2.5.2, and TensorFlow 2.4.4, as these are also affected and still in supported range.
How to fix CVE-2021-41203
To remediate CVE-2021-41203, upgrade the affected package to a fixed version below.
- —upgrade to 2.4.4 or later
- —upgrade to 2.6.1 or later
- —upgrade to 368af875869a204b4ac552b9ddda59f6a46a56ec or later
- —upgrade to 368af875869a204b4ac552b9ddda59f6a46a56ec or later
- —upgrade to 2.6.1 or later
- —upgrade to 368af875869a204b4ac552b9ddda59f6a46a56ec or later
- —upgrade to 2.6.1 or later
Is CVE-2021-41203 being exploited?
Low — EPSS is 0.0%, meaning exploitation activity has not been observed at scale.
Affected packages (7)
- from 0, < 2.4.4, >= 2.5.0, < 2.5.2, >= 2.6.0, < 2.6.1
- >= 2.6.0, < 2.6.1
- from 0, < 368af875869a204b4ac552b9ddda59f6a46a56ec, < abcced051cb1bd8fb05046ac3b6023a7ebcc4578, < e8dc63704c88007ee4713076605c90188d66f3d2, < b619c6f865715ca3b15ef1842b5b95edbaa710ad | from 0, < 2.4.4, >= 2.5.0, < 2.5.2, >= 2.6.0, < 2.6.1, >= 2.7.0rc0, < 2.7.0
- from 0, < 368af875869a204b4ac552b9ddda59f6a46a56ec, < abcced051cb1bd8fb05046ac3b6023a7ebcc4578, < e8dc63704c88007ee4713076605c90188d66f3d2, < b619c6f865715ca3b15ef1842b5b95edbaa710ad | from 0, < 2.4.4, >= 2.5.0, < 2.5.2, >= 2.6.0, < 2.6.1, >= 2.7.0rc0, < 2.7.0
- >= 2.6.0, < 2.6.1
- from 0, < 368af875869a204b4ac552b9ddda59f6a46a56ec, < abcced051cb1bd8fb05046ac3b6023a7ebcc4578, < e8dc63704c88007ee4713076605c90188d66f3d2, < b619c6f865715ca3b15ef1842b5b95edbaa710ad | from 0, < 2.4.4, >= 2.5.0, < 2.5.2, >= 2.6.0, < 2.6.1, >= 2.7.0rc0, < 2.7.0
- >= 2.6.0, < 2.6.1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 4.0 | — | CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N |
| osv | CVSS 3.1 | HIGH7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |