GHSA-hv9v-7w3v-rj6f: Acc reader `Read` On Uninitialized Buffer Vulnerability

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Advisory Summary

GHSA-hv9v-7w3v-rj6f is a HIGH `read` on uninitialized buffer vulnerability (General Security Weakness) affecting Acc reader libraries in the crates.io ecosystem. The issue involves `read` on uninitialized buffer in `fill_buf()` and `read_up_to()`. Remediation is available in the latest vendor maintenance releases.

GHSA-hv9v-7w3v-rj6f at a Glance

CVE Identifier N/A
GHSA Identifier GHSA-hv9v-7w3v-rj6f
Severity HIGH
CVSS v3.1 Base Score N/A
CWE Classification General Security Weakness
Affected Product Acc reader
Package Ecosystem crates.io
Published Date
Last Updated

How to Fix GHSA-hv9v-7w3v-rj6f

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

acc_reader fixed: Latest secure release 
Upgrade acc_reader 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 acc_reader

How to Check if You Are Affected

To determine whether your application is affected by GHSA-hv9v-7w3v-rj6f, inspect your project dependencies for Acc reader:

inspect dependencies for acc_reader

Analyze the terminal output to locate any version of Acc reader 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 Acc reader, 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-hv9v-7w3v-rj6f Affected Acc reader Versions

1 component(s)
Product / Package Ecosystem Affected Versions Fixed Version
acc_reader
 crates.io
≤ 2.0.0

References

Acc reader Source Repository REPOSITORY
https://github.com/netvl/acc_reader/issues/1
Acc reader Source Repository REPOSITORY
https://github.com/netvl/acc_reader
rustsec.org/advisories/rustsec-... WEB
https://rustsec.org/advisories/RUSTSEC-2020-0155.html

Frequently Asked Questions

What is GHSA-hv9v-7w3v-rj6f?
GHSA-hv9v-7w3v-rj6f is a security vulnerability in Acc reader involving `Read` on uninitialized buffer in `fill_buf()` and `read_up_to()` under General Security Weakness.
Which Acc reader versions are affected?
Affected versions include releases prior to current release patches across affected packages: acc_reader.
What version fixes GHSA-hv9v-7w3v-rj6f?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
Is acc_reader affected?
Yes, acc_reader is affected in releases prior to Latest secure release. Upgrade your dependency to Latest secure release or later.
What CWE is associated with GHSA-hv9v-7w3v-rj6f?
GHSA-hv9v-7w3v-rj6f is classified under General Security Weakness.
How can I check crates.io dependencies for GHSA-hv9v-7w3v-rj6f?
Run the dependency tree command: 'inspect dependencies for acc_reader'. 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-hv9v-7w3v-rj6f",
  "modified" : "2023-06-13T16:02:49Z",
  "published" : "2022-06-16T23:38:37Z",
  "aliases" : [ ],
  "summary" : "`Read` on uninitialized buffer in `fill_buf()` and `read_up_to()`",
  "details" : "Affected versions of this crate passes an uninitialized buffer to a user-provided `Read` implementation.\n\nArbitrary `Read` implementations can read from the uninitialized buffer (memory exposure) and also can return incorrect number of bytes written to the buffer.\n\nReading from uninitialized memory produces undefined values that can quickly invoke undefined behavior.\n",
  "severity" : [ ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "crates.io",
      "name" : "acc_reader"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "2.0.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/netvl/acc_reader/issues/1"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/netvl/acc_reader"
  }, {
    "type" : "WEB",
    "url" : "https://rustsec.org/advisories/RUSTSEC-2020-0155.html"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2022-06-16T23:38:37Z",
    "nvd_published_at" : null
  }
}