Vulnerability-Lookup

RUSTSEC-2021-0032 (CVE-2021-28033)

Vulnerability from osv_rustsec – Published: 2021-03-01 12:00 – Updated: 2023-06-13 13:10 – Source website

Summary

Deserializing an array can drop uninitialized memory on panic

Details

The read_bytes_default_le function for [T; n] arrays, used to deserialize arrays of T from bytes created a [T; n] array with std::mem::uninitialized and then called T's deserialization method.

If T's deserialization method panicked, the uninitialized memory could drop invalid objects.

This flaw was corrected in a535678 by removing the unsafe block and using a .map function to deserialize each element of the array instead.

Severity

9.8 (Critical)


                    
                      CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

URL

Type

	https://crates.io/crates/byte_struct	PACKAGE
	https://rustsec.org/advisories/RUSTSEC-2021-0032.html	ADVISORY
	https://github.com/wwylele/byte-struct-rs/issues/1	REPORT

JSON

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{
  "affected": [
    {
      "database_specific": {
        "categories": [
          "memory-corruption"
        ],
        "cvss": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
        "informational": null
      },
      "ecosystem_specific": {
        "affected_functions": null,
        "affects": {
          "arch": [],
          "functions": [],
          "os": []
        }
      },
      "package": {
        "ecosystem": "crates.io",
        "name": "byte_struct",
        "purl": "pkg:cargo/byte_struct"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0.0.0-0"
            },
            {
              "fixed": "0.6.1"
            }
          ],
          "type": "SEMVER"
        }
      ],
      "versions": []
    }
  ],
  "aliases": [
    "CVE-2021-28033",
    "GHSA-8fgg-5v78-6g76"
  ],
  "database_specific": {
    "license": "CC0-1.0"
  },
  "details": "The `read_bytes_default_le` function for `[T; n]` arrays, used to deserialize\narrays of `T` from bytes created a `[T; n]` array with `std::mem::uninitialized`\nand then called `T`\u0027s deserialization method.\n\nIf `T`\u0027s deserialization method panicked, the uninitialized memory could drop\ninvalid objects.\n\nThis flaw was corrected in `a535678` by removing the unsafe block and using\na `.map` function to deserialize each element of the array instead.",
  "id": "RUSTSEC-2021-0032",
  "modified": "2023-06-13T13:10:24Z",
  "published": "2021-03-01T12:00:00Z",
  "references": [
    {
      "type": "PACKAGE",
      "url": "https://crates.io/crates/byte_struct"
    },
    {
      "type": "ADVISORY",
      "url": "https://rustsec.org/advisories/RUSTSEC-2021-0032.html"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/wwylele/byte-struct-rs/issues/1"
    }
  ],
  "related": [],
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Deserializing an array can drop uninitialized memory on panic"
}

CVE-2021-28033 (GCVE-0-2021-28033)

Vulnerability from cvelistv5 – Published: 2021-03-05 08:38 – Updated: 2024-08-03 21:33

Summary

An issue was discovered in the byte_struct crate before 0.6.1 for Rust. There can be a drop of uninitialized memory if a certain deserialization method panics.

Severity

No CVSS data available.

CWE

Assigner

mitre CNA under the mitre root

CNA scorecard E 29/100 over 2166 records in the last 180 days details

References

1 reference

URL	Tags
https://rustsec.org/advisories/RUSTSEC-2021-0032.html	x_refsource_MISC

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T21:33:17.141Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://rustsec.org/advisories/RUSTSEC-2021-0032.html"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "An issue was discovered in the byte_struct crate before 0.6.1 for Rust. There can be a drop of uninitialized memory if a certain deserialization method panics."
        }
      ],
      "problemTypes": [
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              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2021-03-05T08:38:21.000Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://rustsec.org/advisories/RUSTSEC-2021-0032.html"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "cve@mitre.org",
          "ID": "CVE-2021-28033",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
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                "product": {
                  "product_data": [
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                      "version": {
                        "version_data": [
                          {
                            "version_value": "n/a"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "n/a"
              }
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          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
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  "cveMetadata": {
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    "assignerShortName": "mitre",
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    "datePublished": "2021-03-05T08:38:21.000Z",
    "dateReserved": "2021-03-05T00:00:00.000Z",
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    "state": "PUBLISHED"
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  "dataType": "CVE_RECORD",
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}

GHSA-8FGG-5V78-6G76

Vulnerability from github – Published: 2021-08-25 20:52 – Updated: 2022-05-04 03:04

Summary

Deserializing an array can free uninitialized memory in byte_struct

Details

Byte_struct stack and unpack structure as raw bytes with packed or bit field layout. An issue was discovered in the byte_struct crate before 0.6.1 for Rust. There can be a drop of uninitialized memory if a certain deserialization method panics.

Severity

9.8 (Critical)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "crates.io",
        "name": "byte_struct"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.6.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2021-28033"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-119",
      "CWE-908"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2021-08-19T17:25:30Z",
    "nvd_published_at": "2021-03-05T09:15:00Z",
    "severity": "CRITICAL"
  },
  "details": "Byte_struct stack and unpack structure as raw bytes with packed or bit field layout. An issue was discovered in the byte_struct crate before 0.6.1 for Rust. There can be a drop of uninitialized memory if a certain deserialization method panics.",
  "id": "GHSA-8fgg-5v78-6g76",
  "modified": "2022-05-04T03:04:59Z",
  "published": "2021-08-25T20:52:03Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-28033"
    },
    {
      "type": "WEB",
      "url": "https://github.com/wwylele/byte-struct-rs/issues/1"
    },
    {
      "type": "WEB",
      "url": "https://github.com/wwylele/byte-struct-rs/commit/a535678377de12bc6bc22620c5f59bcc1369f76f"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/wwylele/byte-struct-rs"
    },
    {
      "type": "WEB",
      "url": "https://rustsec.org/advisories/RUSTSEC-2021-0032.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Deserializing an array can free uninitialized memory in byte_struct"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

Order JSON

How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

Publication & reservation Sightings KEV catalogs Other timestamps

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

RUSTSEC-2021-0032 (CVE-2021-28033)

CVE-2021-28033 (GCVE-0-2021-28033)

GHSA-8FGG-5V78-6G76

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Vulnerability timeline

Related by attack behaviour