GHSA-r67p-m7g9-gxw6: Csv sniffer `Read` On Uninitialized Memory May Vulnerability

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Advisory Summary

GHSA-r67p-m7g9-gxw6 is a HIGH `read` on uninitialized memory may vulnerability (General Security Weakness) affecting Csv sniffer libraries in the crates.io ecosystem. The issue involves `read` on uninitialized memory may cause ub (fn preamble_skipcount()). Remediation is available by upgrading affected packages to version 0.2.0.

GHSA-r67p-m7g9-gxw6 at a Glance

CVE Identifier N/A
GHSA Identifier GHSA-r67p-m7g9-gxw6
Severity HIGH
CVSS v3.1 Base Score N/A
CWE Classification General Security Weakness
Affected Product Csv sniffer
Package Ecosystem crates.io
Published Date
Last Updated

How to Fix GHSA-r67p-m7g9-gxw6

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

csv-sniffer fixed: 0.2.0 
Upgrade csv-sniffer to 0.2.0
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 csv-sniffer

How to Check if You Are Affected

To determine whether your application is affected by GHSA-r67p-m7g9-gxw6, inspect your project dependencies for Csv sniffer:

inspect dependencies for csv-sniffer

Analyze the terminal output to locate any version of Csv sniffer in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.2.0), 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 Csv sniffer, 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 (within `fn preamble_skipcount()`). 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-r67p-m7g9-gxw6 Affected Csv sniffer Versions

1 component(s)
Fixed Versions:
0.2.0
Product / Package Ecosystem Affected Versions Fixed Version
csv-sniffer
 crates.io
< 0.2.0
0.2.0

References

Csv sniffer Source Repository REPOSITORY
https://github.com/jblondin/csv-sniffer/issues/1
Csv sniffer Source Repository REPOSITORY
https://github.com/jblondin/csv-sniffer/pull/2
rustsec.org/advisories/rustsec-... WEB
https://rustsec.org/advisories/RUSTSEC-2021-0088.html

Frequently Asked Questions

What is GHSA-r67p-m7g9-gxw6?
GHSA-r67p-m7g9-gxw6 is a security vulnerability in Csv sniffer involving `Read` on uninitialized memory may cause UB (fn preamble_skipcount()) under General Security Weakness.
Which Csv sniffer versions are affected?
Affected versions include releases prior to 0.2.0 across affected packages: csv-sniffer.
What version fixes GHSA-r67p-m7g9-gxw6?
Upgrading to 0.2.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is csv-sniffer affected?
Yes, csv-sniffer is affected in releases prior to 0.2.0. Upgrade your dependency to 0.2.0 or later.
What CWE is associated with GHSA-r67p-m7g9-gxw6?
GHSA-r67p-m7g9-gxw6 is classified under General Security Weakness.
How can I check crates.io dependencies for GHSA-r67p-m7g9-gxw6?
Run the dependency tree command: 'inspect dependencies for csv-sniffer'. 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-r67p-m7g9-gxw6",
  "modified" : "2022-06-16T23:51:58Z",
  "published" : "2022-06-16T23:51:58Z",
  "aliases" : [ ],
  "summary" : "`Read` on uninitialized memory may cause UB (fn preamble_skipcount())",
  "details" : "Affected versions of this crate passes an uninitialized buffer to a user-provided `Read` implementation (within `fn preamble_skipcount()`).\n\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" : "csv-sniffer"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "0.2.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/jblondin/csv-sniffer/issues/1"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/jblondin/csv-sniffer/pull/2"
  }, {
    "type" : "WEB",
    "url" : "https://rustsec.org/advisories/RUSTSEC-2021-0088.html"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2022-06-16T23:51:58Z",
    "nvd_published_at" : null
  }
}