CVE-2019-16881: Portaudio rs Use After Free Vulnerability

CRITICAL
Advisory Identifier: GHSA-qpjr-ch72-2qq4
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CVSS 9.8
CWE-416
Published
Advisory Summary

CVE-2019-16881 is a CRITICAL (CVSS 9.8) use after free vulnerability (CWE-416: Use After Free) affecting Portaudio rs libraries in the crates.io ecosystem. The issue involves use after free in portaudio-rs. Remediation is available by upgrading affected packages to version 0.3.2.

CVE-2019-16881 at a Glance

CVE Identifier CVE-2019-16881
GHSA Identifier GHSA-qpjr-ch72-2qq4
Severity CRITICAL
CVSS v3.1 Base Score 9.8
CWE Classification CWE-416: Use After Free
Affected Product Portaudio rs
Package Ecosystem crates.io
Published Date
Last Updated

Security Impact

CVSS: 9.8

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity High (I:H)
Availability High (A:H)

How to Fix CVE-2019-16881

To remediate this vulnerability, upgrade all affected Portaudio rs dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

portaudio-rs fixed: 0.3.2 
Upgrade portaudio-rs to 0.3.2
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

inspect dependencies for portaudio-rs

How to Check if You Are Affected

To determine whether your application is affected by CVE-2019-16881, inspect your project dependencies for Portaudio rs:

inspect dependencies for portaudio-rs

Analyze the terminal output to locate any version of Portaudio rs in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.3.2), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-416: Use After Free, where the product reuses or references memory after it has been freed. at some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer. In Portaudio rs, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

Affected versions of this crate is not panic safe within callback functions stream_callback and stream_finished_callback. The call to user-provided closure might panic before a mem::forget call, which then causes a use after free that grants attacker to control the callback function pointer. This allows an attacker to construct an arbitrary code execution .

CVE-2019-16881 Affected Portaudio rs Versions

1 component(s)
Fixed Versions:
0.3.2
Product / Package Ecosystem Affected Versions Fixed Version
portaudio-rs
 crates.io
< 0.3.2
0.3.2

References

NVD — CVE-2019-16881 NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-16881
Portaudio rs Source Repository REPOSITORY
https://github.com/mvdnes/portaudio-rs/issues/20
Security Fix Commit FIX COMMIT
https://github.com/mvdnes/portaudio-rs/commit/7466df019f6739732fd91401017942c22364ef61
Portaudio rs Source Repository REPOSITORY
https://github.com/mvdnes/portaudio-rs
rustsec.org/advisories/rustsec-... WEB
https://rustsec.org/advisories/RUSTSEC-2019-0022.html

Frequently Asked Questions

What is CVE-2019-16881?
CVE-2019-16881 is a security vulnerability in Portaudio rs involving Use after free in portaudio-rs under CWE-416: Use After Free.
Which Portaudio rs versions are affected?
Affected versions include releases prior to 0.3.2 across affected packages: portaudio-rs.
What version fixes CVE-2019-16881?
Upgrading to 0.3.2 (or the latest patched release for your respective branch) resolves the vulnerability.
Is portaudio-rs affected?
Yes, portaudio-rs is affected in releases prior to 0.3.2. Upgrade your dependency to 0.3.2 or later.
What is the CVSS score of CVE-2019-16881?
CVE-2019-16881 has a CVSS v3.1 base score of 9.8 (CRITICAL) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2019-16881?
CVE-2019-16881 is classified under CWE-416: Use After Free (The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.).
How can I check crates.io dependencies for CVE-2019-16881?
Run the dependency tree command: 'inspect dependencies for portaudio-rs'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-qpjr-ch72-2qq4",
  "modified" : "2023-06-13T20:35:06Z",
  "published" : "2021-08-25T20:45:17Z",
  "aliases" : [ "CVE-2019-16881" ],
  "summary" : "Use after free in portaudio-rs",
  "details" : "Affected versions of this crate is not panic safe within callback functions stream_callback and stream_finished_callback. The call to user-provided closure might panic before a mem::forget call, which then causes a use after free that grants attacker to control the callback function pointer. This allows an attacker to construct an arbitrary code execution .",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "crates.io",
      "name" : "portaudio-rs"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "0.3.2"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2019-16881"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/mvdnes/portaudio-rs/issues/20"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/mvdnes/portaudio-rs/commit/7466df019f6739732fd91401017942c22364ef61"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/mvdnes/portaudio-rs"
  }, {
    "type" : "WEB",
    "url" : "https://rustsec.org/advisories/RUSTSEC-2019-0022.html"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-416" ],
    "severity" : "CRITICAL",
    "github_reviewed" : true,
    "github_reviewed_at" : "2021-08-19T21:21:17Z",
    "nvd_published_at" : null
  }
}