CVE-2021-37687
TensorFlow GatherNd/Arbitrary Heap Read
Description
TensorFlow is an end-to-end open source platform for machine learning. In affected versions TFLite'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. Hence, an attacker can read arbitrary data from the heap by carefully crafting a model with negative values in `indices`. Similar issue exists in [`Gather` implementation](https://github.com/tensorflow/tensorflow/blob/149562d49faa709ea80df1d99fc41d005b81082a/tensorflow/lite/kernels/gather.cc). We have patched the issue in GitHub commits bb6a0383ed553c286f87ca88c207f6774d5c4a8f and eb921122119a6b6e470ee98b89e65d721663179d. 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.
INFO
Published Date :
Aug. 12, 2021, 11:15 p.m.
Last Modified :
Nov. 21, 2024, 6:15 a.m.
Remotely Exploit :
No
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 2.0 | LOW | [email protected] | ||||
| CVSS 3.1 | MEDIUM | [email protected] | ||||
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Update the affected packages.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2021-37687.
| URL | Resource |
|---|---|
| https://github.com/tensorflow/tensorflow/commit/bb6a0383ed553c286f87ca88c207f6774d5c4a8f | Patch Third Party Advisory |
| https://github.com/tensorflow/tensorflow/commit/eb921122119a6b6e470ee98b89e65d721663179d | Third Party Advisory |
| https://github.com/tensorflow/tensorflow/security/advisories/GHSA-jwf9-w5xm-f437 | Third Party Advisory |
| https://github.com/tensorflow/tensorflow/commit/bb6a0383ed553c286f87ca88c207f6774d5c4a8f | Patch Third Party Advisory |
| https://github.com/tensorflow/tensorflow/commit/eb921122119a6b6e470ee98b89e65d721663179d | Third Party Advisory |
| https://github.com/tensorflow/tensorflow/security/advisories/GHSA-jwf9-w5xm-f437 | Third Party Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-37687 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2021-37687
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-37687 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-37687 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference https://github.com/tensorflow/tensorflow/commit/bb6a0383ed553c286f87ca88c207f6774d5c4a8f Added Reference https://github.com/tensorflow/tensorflow/commit/eb921122119a6b6e470ee98b89e65d721663179d Added Reference https://github.com/tensorflow/tensorflow/security/advisories/GHSA-jwf9-w5xm-f437 -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Initial Analysis by [email protected]
Aug. 18, 2021
Action Type Old Value New Value Added CVSS V2 NIST (AV:L/AC:L/Au:N/C:P/I:N/A:N) Added CVSS V3.1 NIST AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N Changed Reference Type https://github.com/tensorflow/tensorflow/commit/bb6a0383ed553c286f87ca88c207f6774d5c4a8f No Types Assigned https://github.com/tensorflow/tensorflow/commit/bb6a0383ed553c286f87ca88c207f6774d5c4a8f Patch, Third Party Advisory Changed Reference Type https://github.com/tensorflow/tensorflow/commit/eb921122119a6b6e470ee98b89e65d721663179d No Types Assigned https://github.com/tensorflow/tensorflow/commit/eb921122119a6b6e470ee98b89e65d721663179d Third Party Advisory Changed Reference Type https://github.com/tensorflow/tensorflow/security/advisories/GHSA-jwf9-w5xm-f437 No Types Assigned https://github.com/tensorflow/tensorflow/security/advisories/GHSA-jwf9-w5xm-f437 Third Party Advisory Added CPE Configuration OR *cpe:2.3:a:google:tensorflow:*:*:*:*:*:*:*:* versions from (including) 2.3.0 up to (excluding) 2.3.4 *cpe:2.3:a:google:tensorflow:*:*:*:*:*:*:*:* versions from (including) 2.4.0 up to (excluding) 2.4.3 *cpe:2.3:a:google:tensorflow:2.5.0:*:*:*:*:*:*:* *cpe:2.3:a:google:tensorflow:2.6.0:rc0:*:*:*:*:*:* *cpe:2.3:a:google:tensorflow:2.6.0:rc1:*:*:*:*:*:* *cpe:2.3:a:google:tensorflow:2.6.0:rc2:*:*:*:*:*:* -
CPE Deprecation Remap by [email protected]
Aug. 17, 2021
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:a:tensorflow:tensorflow:*:*:*:*:*:*:*:* versions from (including) 2.5.0 from (including) 2.5.1 OR *cpe:2.3:a:google:tensorflow:*:*:*:*:*:*:*:* versions from (including) 2.5.0 from (including) 2.5.1 -
CPE Deprecation Remap by [email protected]
Aug. 17, 2021
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:a:tensorflow:tensorflow:*:*:*:*:*:*:*:* versions from (including) 2.4.0 from (including) 2.4.3 OR *cpe:2.3:a:google:tensorflow:*:*:*:*:*:*:*:* versions from (including) 2.4.0 from (including) 2.4.3 -
CPE Deprecation Remap by [email protected]
Aug. 17, 2021
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:a:tensorflow:tensorflow:*:*:*:*:*:*:*:* versions from (including) 2.3.0 from (including) 2.3.4 OR *cpe:2.3:a:google:tensorflow:*:*:*:*:*:*:*:* versions from (including) 2.3.0 from (including) 2.3.4 -
CPE Deprecation Remap by [email protected]
Aug. 17, 2021
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:a:tensorflow:tensorflow:2.6.0:rc0:*:*:*:*:*:* OR *cpe:2.3:a:google:tensorflow:2.6.0:rc0:*:*:*:*:*:* -
CPE Deprecation Remap by [email protected]
Aug. 17, 2021
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:a:tensorflow:tensorflow:2.6.0:rc1:*:*:*:*:*:* OR *cpe:2.3:a:google:tensorflow:2.6.0:rc1:*:*:*:*:*:* -
CPE Deprecation Remap by [email protected]
Aug. 17, 2021
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:a:tensorflow:tensorflow:2.6.0:rc2:*:*:*:*:*:* OR *cpe:2.3:a:google:tensorflow:2.6.0:rc2:*:*:*:*:*:*
Vulnerability Scoring Details
Base CVSS Score: 5.5
Base CVSS Score: 2.1
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.04 }} 0.01%
score
0.13092
percentile