# CVE-2022-47931: Collision of hash values in github.com/bnb-chain/tss-lib


- **Severity:** Medium 6.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N`)
- **Exploited in the wild:** Not known
- **Fix available:** Yes
- **Published:** 22 Dec 2022
- **Updated:** 15 Apr 2025
- **Also known as:** GHSA-cvcx-g7wh-x8rf, GO-2023-1904

## What is CVE-2022-47931?

CVE-2022-47931 is a medium-severity vulnerability in n/a, published on 22 Dec 2022. 

### Official description

IO FinNet tss-lib before 2.0.0 allows a collision of hash values.

Weakness: CWE-326 (Inadequate Encryption Strength)

## Which versions are affected by CVE-2022-47931?

4 open source packages ship an affected version, including github.com/bnb-chain/tss-lib and github.com/binance-chain/tss-lib. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `github.com/bnb-chain/tss-lib` | Go | All versions | 1.3.6-0.20230324145555-bb6fb30bd3eb |
| `github.com/bnb-chain/tss-lib` | Go | All versions | 1.3.6-0.20230324145555-bb6fb30bd3eb |
| `github.com/bnb-chain/tss-lib` | Go | All versions | 1.3.6-0.20230324145555-bb6fb30bd3eb |
| `github.com/binance-chain/tss-lib` | Go | All versions | None |

Products: Iofinnet Tss-Lib.

## How do I fix CVE-2022-47931?

Upgrade github.com/bnb-chain/tss-lib to 1.3.6-0.20230324145555-bb6fb30bd3eb or later.

## Is CVE-2022-47931 being exploited?

There is no known exploitation of CVE-2022-47931 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2023-26556](https://insights.sbomify.com/CVE-2023-26556/): IO FinNet tss-lib vulnerable to timing attack from non-constant time scalar multiplication (critical 9.1)
- [CVE-2023-26557](https://insights.sbomify.com/CVE-2023-26557/): IO FinNet tss-lib vulnerable to timing attack from non-constant time scalar arithmetic (high 7.5)
- [CVE-2022-47930](https://insights.sbomify.com/CVE-2022-47930/): IO FinNet tss-lib vulnerable to replay attacks involving proofs (medium 6.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-47931 and fix it if it is affected.

What it is: CVE-2022-47931 is a medium-severity vulnerability in n/a, published on 22 Dec 2022. 
Exploitation: There is no known exploitation of CVE-2022-47931 in the wild and no public exploit code.

Affected packages and fixed versions:
- github.com/bnb-chain/tss-lib (Go): affected all versions; fixed in 1.3.6-0.20230324145555-bb6fb30bd3eb
- github.com/bnb-chain/tss-lib (Go): affected all versions; fixed in 1.3.6-0.20230324145555-bb6fb30bd3eb
- github.com/bnb-chain/tss-lib (Go): affected all versions; fixed in 1.3.6-0.20230324145555-bb6fb30bd3eb
- github.com/binance-chain/tss-lib (Go): affected all versions; no fix listed

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2022-47931/ (Markdown: https://insights.sbomify.com/CVE-2022-47931/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-47931
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-47931
- OSV: https://osv.dev/vulnerability/CVE-2022-47931

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-47931/
Summaries are generated and may contain mistakes; the official description above is the record.