---
id: CVE-2024-34063
aliases:
  - RUSTSEC-2024-0342
  - GHSA-c3hm-hxwf-g5c6
title: Degraded secret zeroization capabilities
summary: Degraded secret zeroization capabilities
severity: none
vendor: vodozemac
product: vodozemac
ecosystem: rust
affected:
  - 'vodozemac >= 0.5.0, < 0.6.0'
patched:
  - vodozemac 0.6.0
published: '2024-05-02'
updated: '2026-10-12'
sourceUpdated: '2026-10-12T18:00:11.503195545Z'
source: OSV
sourceUrl: 'https://osv.dev/vulnerability/RUSTSEC-2024-0342'
references:
  - url: 'https://crates.io/crates/vodozemac'
  - url: 'https://rustsec.org/advisories/RUSTSEC-2024-0342.html'
  - url: >-
      https://github.com/matrix-org/vodozemac/commit/297548cad4016ce448c4b5007c54db7ee39489d9
tags:
  - osv
  - rust
epss: 0.00135
epssPercentile: 0.02946
ingestedAt: '2026-10-13T11:45:30.168Z'
---

## Overview

Versions 0.5.0 and 0.5.1 of vodozemac have degraded secret zeroization capabilities,
due to changes in third-party cryptographic dependencies (the Dalek crates),
which moved secret zeroization capabilities behind a feature flag while
vodozemac disabled the default feature set.

## Impact

The degraded zeroization capabilities could result in the production of more
memory copies of encryption secrets and secrets could linger in memory longer
than necessary. This marginally increases the risk of sensitive data exposure.

Overall, we consider the impact of this issue to be low. Although cryptographic
best practices recommend the clearing of sensitive information from memory once
it's no longer needed, the inherent limitations of Rust regarding absolute
zeroization reduce the practical severity of this lapse.

## Affected packages

- `vodozemac >= 0.5.0, < 0.6.0`

## Remediation

Upgrade to a patched release:

- `vodozemac 0.6.0`