# RUSTSEC-2025-0006 - Hickory DNS failure to verify self-signed RRSIG for DNSKEYs

Source: https://junglewise.ai/threats/rustsec-2025-0006-hickory-dns-failure-to-verify-self-signed-rrsig-for-2e741307  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2025-02-07  
License: CC BY 4.0 with a link back

Severity: info · Published 2025-02-07

Hickory DNS failure to verify self-signed RRSIG for DNSKEYs

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

## 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 7 February 2025.

**Which products and versions are affected?** hickory-proto (crates.io) SEMVER:introduced=0.8.0,fixed=0.24.3,introduced=0.25.0-0,fixed=0.25.0-alpha.5.

**Is there a fix for This vulnerability?** Yes. hickory-proto (crates.io): upgrade to 0.25.0-alpha.5 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 hickory-proto (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

- hickory-proto (crates.io): upgrade to 0.25.0-alpha.5 or later

  ```sh
  cargo update -p hickory-proto
  ```


## Affected products

- hickory-proto (crates.io) SEMVER:introduced=0.8.0,fixed=0.24.3,introduced=0.25.0-0,fixed=0.25.0-alpha.5

## Related threats

- [hickory-proto vulnerable to CPU exhaustion during message encoding due to O(n²) name compression](https://junglewise.ai/threats/hickory-proto-vulnerable-to-cpu-exhaustion-during-message-encoding-due-a5904f49)
- [hickory-proto: NSEC3 closest-encloser proof validation enters unbounded loop on cross-zone responses](https://junglewise.ai/threats/hickory-proto-nsec3-closest-encloser-proof-validation-enters-unbounded-e7dc6c28)
- [RUSTSEC-2026-0118 - NSEC3 closest-encloser proof validation enters unbounded loop on cross-zone responses](https://junglewise.ai/threats/rustsec-2026-0118-nsec3-closest-encloser-proof-validation-enters-1c6355b8)
- [RUSTSEC-2026-0119 - CPU exhaustion during message encoding due to O(n²) name compression](https://junglewise.ai/threats/rustsec-2026-0119-cpu-exhaustion-during-message-encoding-due-to-o-n-817a4c82)
- [Hickory DNS failure to verify self-signed RRSIG for DNSKEYs](https://junglewise.ai/threats/hickory-dns-failure-to-verify-self-signed-rrsig-for-dnskeys-8cc3be51)