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TorchServe Server-Side Request Forgery vulnerability

Critical severity GitHub Reviewed Published Sep 28, 2023 in pytorch/serve • Updated Nov 10, 2023

Package

pip torchserve (pip)

Affected versions

>= 0.1.0, < 0.8.2

Patched versions

0.8.2

Description

Impact

Remote Server-Side Request Forgery (SSRF)
Issue: TorchServe default configuration lacks proper input validation, enabling third parties to invoke remote HTTP download requests and write files to the disk. This issue could be taken advantage of to compromise the integrity of the system and sensitive data. This issue is present in versions 0.1.0 to 0.8.1.
Mitigation: The user is able to load the model of their choice from any URL that they would like to use. The user of TorchServe is responsible for configuring both the allowed_urls and specifying the model URL to be used. A pull request to warn the user when the default value for allowed_urls is used has been merged - pytorch/serve#2534. TorchServe release 0.8.2 includes this change.

Patches

TorchServe release 0.8.2 includes fixes to address the previously listed issue:

https://github.com/pytorch/serve/releases/tag/v0.8.2

Tags for upgraded DLC release
User can use the following new image tags to pull DLCs that ship with patched TorchServe version 0.8.2:
x86 GPU

  • v1.9-pt-ec2-2.0.1-inf-gpu-py310
  • v1.8-pt-sagemaker-2.0.1-inf-gpu-py310

x86 CPU

  • v1.8-pt-ec2-2.0.1-inf-cpu-py310
  • v1.7-pt-sagemaker-2.0.1-inf-cpu-py310

Graviton

  • v1.7-pt-graviton-ec2-2.0.1-inf-cpu-py310
  • v1.5-pt-graviton-sagemaker-2.0.1-inf-cpu-py310

Neuron

  • 1.13.1-neuron-py310-sdk2.13.2-ubuntu20.04
  • 1.13.1-neuronx-py310-sdk2.13.2-ubuntu20.04
  • 1.13.1-neuronx-py310-sdk2.13.2-ubuntu20.04

The full DLC image URI details can be found at: https://github.com/aws/deep-learning-containers/blob/master/available_images.md#available-deep-learning-containers-images

References

https://github.com/pytorch/serve/blob/b3eced56b4d9d5d3b8597aa506a0bcf954d291bc/docs/configuration.md?plain=1#L296
pytorch/serve#2534
https://github.com/pytorch/serve/releases/tag/v0.8.2
https://github.com/aws/deep-learning-containers/blob/master/available_images.md#available-deep-learning-containers-images

Credit

We would like to thank Oligo Security for responsibly disclosing this issue and working with us on its resolution.
If you have any questions or comments about this advisory, we ask that you contact AWS/Amazon Security via our vulnerability reporting page](https://aws.amazon.com/security/vulnerability-reporting)) or directly via email to [email protected]. Please do not create a public GitHub issue.

References

@namannandan namannandan published to pytorch/serve Sep 28, 2023
Published by the National Vulnerability Database Sep 28, 2023
Published to the GitHub Advisory Database Oct 2, 2023
Reviewed Oct 2, 2023
Last updated Nov 10, 2023

Severity

Critical

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS score

Exploit Prediction Scoring System (EPSS)

This score estimates the probability of this vulnerability being exploited within the next 30 days. Data provided by FIRST.
(95th percentile)

Weaknesses

CVE ID

CVE-2023-43654

GHSA ID

GHSA-8fxr-qfr9-p34w

Source code

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