Vulnerability Details : CVE-2021-41211
Potential exploit
TensorFlow is an open source platform for machine learning. In affected versions the shape inference code for `QuantizeV2` can trigger a read outside of bounds of heap allocated array. This occurs whenever `axis` is a negative value less than `-1`. In this case, we are accessing data before the start of a heap buffer. The code allows `axis` to be an optional argument (`s` would contain an `error::NOT_FOUND` error code). Otherwise, it assumes that `axis` is a valid index into the dimensions of the `input` tensor. If `axis` is less than `-1` then this results in a heap OOB read. The fix will be included in TensorFlow 2.7.0. We will also cherrypick this commit on TensorFlow 2.6.1, as this version is the only one that is also affected.
Products affected by CVE-2021-41211
- cpe:2.3:a:google:tensorflow:2.6.0:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-41211
0.04%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 5 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-41211
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
3.6
|
LOW | AV:L/AC:L/Au:N/C:P/I:N/A:P |
3.9
|
4.9
|
NIST | |
7.1
|
HIGH | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H |
1.8
|
5.2
|
NIST | |
7.1
|
HIGH | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H |
1.8
|
5.2
|
GitHub, Inc. |
CWE ids for CVE-2021-41211
-
The product reads data past the end, or before the beginning, of the intended buffer.Assigned by:
- nvd@nist.gov (Primary)
- security-advisories@github.com (Secondary)
References for CVE-2021-41211
-
https://github.com/tensorflow/tensorflow/security/advisories/GHSA-cvgx-3v3q-m36c
Heap OOB in shape inference for `QuantizeV2` · Advisory · tensorflow/tensorflow · GitHubExploit;Third Party Advisory
-
https://github.com/tensorflow/tensorflow/commit/a0d64445116c43cf46a5666bd4eee28e7a82f244
Prevent OOB access in QuantizeV2 shape inference · tensorflow/tensorflow@a0d6444 · GitHubPatch;Third Party Advisory
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