Use After Free Affecting wasmtime package, versions >=0.19.0 <0.30.0


Severity

Recommended
0.0
medium
0
10

CVSS assessment made by Snyk's Security Team

    Threat Intelligence

    EPSS
    0.05% (16th percentile)

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  • Snyk ID SNYK-RUST-WASMTIME-1586261
  • published 19 Sep 2021
  • disclosed 19 Sep 2021
  • credit alexcrichton, fitzgen, cfallin

How to fix?

Upgrade wasmtime to version 0.30.0 or higher.

Overview

Affected versions of this package are vulnerable to Use After Free when passing multiple externrefs from the host to guest Wasm content.

CVSS Scores

version 3.1
Expand this section

Snyk

Recommended
6.8 medium
  • Attack Vector (AV)
    Network
  • Attack Complexity (AC)
    High
  • Privileges Required (PR)
    Low
  • User Interaction (UI)
    None
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    None
  • Integrity (I)
    High
  • Availability (A)
    High
Expand this section

NVD

6.3 medium