# GO-2023-2003 - Group signature validation bypass in github.com/supranational/blst

Source: https://junglewise.ai/threats/go-2023-2003-group-signature-validation-bypass-in-github-com-fdec5c2d  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2023-08-10  
License: CC BY 4.0 with a link back

Severity: info · Published 2023-08-10

Group signature validation bypass in github.com/supranational/blst

Technologies: [github.com/supranational/blst (Go)](https://junglewise.ai/threats/technologies/github-com-supranational-blst). Vendors: [Go](https://junglewise.ai/threats/vendors/go).

## Quick answers

**Is This vulnerability exploited in the wild?** No. Junglewise Threat Intelligence has no report of This vulnerability being exploited in the wild.

**How severe is This vulnerability?** Informational severity, published 10 August 2023.

**Which products and versions are affected?** github.com/supranational/blst (Go) SEMVER:introduced=0.3.0,fixed=0.3.11.

**Is there a fix for This vulnerability?** Yes. github.com/supranational/blst (Go): upgrade to 0.3.11 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**Am I affected?** Check whether you run github.com/supranational/blst (Go) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- github.com/supranational/blst (Go): upgrade to 0.3.11 or later

  ```sh
  go get github.com/supranational/blst@v0.3.11
  ```


## Affected products

- github.com/supranational/blst (Go) SEMVER:introduced=0.3.0,fixed=0.3.11

## Related threats

- [Blst has logical error in SigValidate in Go bindings](https://junglewise.ai/threats/blst-has-logical-error-in-sigvalidate-in-go-bindings-d9e03725)
- [GO-2022-1053 - Incorrect signatures in github.com/supranational/blst](https://junglewise.ai/threats/go-2022-1053-incorrect-signatures-in-github-com-supranational-blst-e0ae20ee)
- [Blst vulnerable to incorrect results for some inputs in blst_fp_eucl_inverse function](https://junglewise.ai/threats/blst-vulnerable-to-incorrect-results-for-some-inputs-in-blst-fp-eucl-46a63a60)