# CVE-2024-23342: python-ecdsa vulnerable to Minerva attack on P-256

> The python-ecdsa library is vulnerable to the Minerva attack, potentially leaking private key information through timing side-channels during P-256 operations.

- **Severity:** High 7.4 (`CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 22 Jan 2024
- **Updated:** 30 May 2025
- **Also known as:** DEBIAN-CVE-2024-23342, GHSA-wj6h-64fc-37mp, MINI-3wf8-x8w5-hwvv, MINI-qx8m-xc2v-8ghw, PYSEC-2026-1325, UBUNTU-CVE-2024-23342

## What is CVE-2024-23342?

CVE-2024-23342 is a high-severity vulnerability in tlsfuzzer python-ecdsa, published on 22 Jan 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The `ecdsa` PyPI package is a pure Python implementation of ECC (Elliptic Curve Cryptography) with support for ECDSA (Elliptic Curve Digital Signature Algorithm), EdDSA (Edwards-curve Digital Signature Algorithm) and ECDH (Elliptic Curve Diffie-Hellman). Versions 0.18.0 and prior are vulnerable to the Minerva attack. As of time of publication, no known patched version exists.

Weakness: CWE-385 (Covert Timing Channel), CWE-208 (Observable Timing Discrepancy), CWE-203 (Observable Discrepancy)

## Which versions are affected by CVE-2024-23342?

3 open source packages ship an affected version, including ecdsa. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `ecdsa` | PyPI | All versions | None |
| `ecdsa` | PyPI | All versions | None |
| `ecdsa` | PyPI | All versions | None |

Products: Tlsfuzzer Ecdsa.

## How do I fix CVE-2024-23342?

No fix published yet.

## Is CVE-2024-23342 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-23342 exists.

## Other vulnerabilities in tlsfuzzer python-ecdsa

- [CVE-2026-33936](https://insights.sbomify.com/CVE-2026-33936/): python-ecdsa: Denial of Service via improper DER length validation in crafted private keys (medium 5.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-23342 and fix it if it is affected.

What it is: CVE-2024-23342 is a high-severity vulnerability in tlsfuzzer python-ecdsa, published on 22 Jan 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-23342 exists.

Affected packages and fixed versions:
- ecdsa (PyPI): affected all versions; no fix listed
- ecdsa (PyPI): affected all versions; no fix listed
- ecdsa (PyPI): 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-2024-23342/ (Markdown: https://insights.sbomify.com/CVE-2024-23342/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-23342
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-23342
- OSV: https://osv.dev/vulnerability/CVE-2024-23342

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-23342/
Summaries are generated and may contain mistakes; the official description above is the record.