GHSA-hmx9-jm3v-33hv: InputStream :read_exact : `Read` On Uninitialized Vulnerability

HIGH
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Advisory Summary

GHSA-hmx9-jm3v-33hv is a HIGH :read_exact : `read` on uninitialized vulnerability (General Security Weakness) affecting InputStream libraries in the crates.io ecosystem. The issue involves :read_exact : `read` on uninitialized buffer causes ub. Remediation is available in the latest vendor maintenance releases.

GHSA-hmx9-jm3v-33hv at a Glance

CVE Identifier N/A
GHSA Identifier GHSA-hmx9-jm3v-33hv
Severity HIGH
CVSS v3.1 Base Score N/A
CWE Classification General Security Weakness
Affected Product InputStream
Package Ecosystem crates.io
Published Date
Last Updated

How to Fix GHSA-hmx9-jm3v-33hv

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

buffoon fixed: Latest secure release 
Upgrade buffoon to Latest secure release
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 buffoon

How to Check if You Are Affected

To determine whether your application is affected by GHSA-hmx9-jm3v-33hv, inspect your project dependencies for InputStream:

inspect dependencies for buffoon

Analyze the terminal output to locate any version of InputStream in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than the patched release), 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 General Security Weakness. In InputStream, 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 passes an uninitialized buffer to a user-provided `Read` implementation. Arbitrary `Read` implementations can read from the uninitialized buffer (memory exposure) and also can return incorrect number of bytes written to the buffer. Reading from uninitialized memory produces undefined values that can quickly invoke undefined behavior.

GHSA-hmx9-jm3v-33hv Affected InputStream Versions

1 component(s)
Product / Package Ecosystem Affected Versions Fixed Version
buffoon
 crates.io
≤ 0.5.0

References

InputStream Source Repository REPOSITORY
https://github.com/carllerche/buffoon/issues/2
InputStream Source Repository REPOSITORY
https://github.com/carllerche/buffoon
rustsec.org/advisories/rustsec-... WEB
https://rustsec.org/advisories/RUSTSEC-2020-0154.html

Frequently Asked Questions

What is GHSA-hmx9-jm3v-33hv?
GHSA-hmx9-jm3v-33hv is a security vulnerability in InputStream involving :read_exact : `Read` on uninitialized buffer causes UB under General Security Weakness.
Which InputStream versions are affected?
Affected versions include releases prior to current release patches across affected packages: buffoon.
What version fixes GHSA-hmx9-jm3v-33hv?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
Is buffoon affected?
Yes, buffoon is affected in releases prior to Latest secure release. Upgrade your dependency to Latest secure release or later.
What CWE is associated with GHSA-hmx9-jm3v-33hv?
GHSA-hmx9-jm3v-33hv is classified under General Security Weakness.
How can I check crates.io dependencies for GHSA-hmx9-jm3v-33hv?
Run the dependency tree command: 'inspect dependencies for buffoon'. 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-hmx9-jm3v-33hv",
  "modified" : "2023-06-13T17:07:52Z",
  "published" : "2022-06-16T23:46:08Z",
  "aliases" : [ ],
  "summary" : "InputStream::read_exact : `Read` on uninitialized buffer causes UB",
  "details" : "Affected versions of this crate passes an uninitialized buffer to a user-provided `Read` implementation.\nArbitrary `Read` implementations can read from the uninitialized buffer (memory exposure) and also can return incorrect number of bytes written to the buffer.\nReading from uninitialized memory produces undefined values that can quickly invoke undefined behavior.\n",
  "severity" : [ ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "crates.io",
      "name" : "buffoon"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "0.5.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/carllerche/buffoon/issues/2"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/carllerche/buffoon"
  }, {
    "type" : "WEB",
    "url" : "https://rustsec.org/advisories/RUSTSEC-2020-0154.html"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2022-06-16T23:46:08Z",
    "nvd_published_at" : null
  }
}