# CVE-2019-15545: RUSTSEC-2019-0004 - Failure to properly verify ed25519 signatures makes any signature valid

Source: https://junglewise.ai/threats/cve-2019-15545-failure-to-properly-verify-ed25519-signatures-in-libp2p-core  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2019-05-15  
License: CC BY 4.0 with a link back

CVE-2019-15545 · Severity: low · CVSS 3 · Published 2019-05-15

Failure to properly verify ed25519 signatures makes any signature valid

Technologies: [libp2p-core (crates.io)](https://junglewise.ai/threats/technologies/libp2p-core). Vendors: [crates.io](https://junglewise.ai/threats/vendors/crates-io).

## Quick answers

**Is CVE-2019-15545 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2019-15545 being exploited in the wild.

**How severe is CVE-2019-15545?** Low severity, with a CVSS score of 3, published 15 May 2019.

**Which products and versions are affected?** libp2p-core (crates.io) SEMVER:introduced=0,fixed=0.8.1, SEMVER:introduced=0.3.0,fixed=0.7.1,introduced=0.8.0-0,fixed=0.8.1.

**Is there a fix for CVE-2019-15545?** Yes. libp2p-core (crates.io): upgrade to 0.8.1 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**Am I affected by CVE-2019-15545?** Check whether you run libp2p-core (crates.io) 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

- libp2p-core (crates.io): upgrade to 0.8.1 or later

  ```sh
  cargo update -p libp2p-core
  ```


## Affected products

- libp2p-core (crates.io) SEMVER:introduced=0,fixed=0.8.1, SEMVER:introduced=0.3.0,fixed=0.7.1,introduced=0.8.0-0,fixed=0.8.1

## Identifiers

- CVE-2019-15545
- GHSA-4q4x-67hx-5mpg
- RUSTSEC-2019-0004

## Related threats

- [Failure to verify the public key of a `SignedEnvelope` against the `PeerId` in a `PeerRecord`](https://junglewise.ai/threats/failure-to-verify-the-public-key-of-a-signedenvelope-against-the-peerid-b70dcb92)
- [RUSTSEC-2022-0009 - Failure to verify the public key of a `SignedEnvelope` against the `PeerId` in a `PeerRecord`](https://junglewise.ai/threats/rustsec-2022-0009-failure-to-verify-the-public-key-of-a-signedenvelope-9ccee126)