Vulnerability-Lookup

RUSTSEC-2021-0008 (CVE-2021-25905)

Vulnerability from osv_rustsec – Published: 2021-01-02 12:00 – Updated: 2023-06-13 13:10 – Source website

Summary

reading on uninitialized buffer can cause UB (`impl<R> BufRead for GreedyAccessReader<R>`)

Details

Affected versions of this crate creates an uninitialized buffer and passes it to user-provided Read implementation.

This is unsound, because it allows safe Rust code to exhibit an undefined behavior (read from uninitialized memory).

The flaw was corrected in version 0.1.1 by zero-initializing a newly allocated buffer before handing it to a user-provided Read implementation.

Severity

9.1 (Critical)


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

References

URL

Type

	https://crates.io/crates/bra	PACKAGE
	https://rustsec.org/advisories/RUSTSEC-2021-0008.html	ADVISORY
	https://github.com/Enet4/bra-rs/issues/1	REPORT

JSON

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{
  "affected": [
    {
      "database_specific": {
        "categories": [
          "memory-exposure"
        ],
        "cvss": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H",
        "informational": null
      },
      "ecosystem_specific": {
        "affected_functions": null,
        "affects": {
          "arch": [],
          "functions": [],
          "os": []
        }
      },
      "package": {
        "ecosystem": "crates.io",
        "name": "bra",
        "purl": "pkg:cargo/bra"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0.0.0-0"
            },
            {
              "fixed": "0.1.1"
            }
          ],
          "type": "SEMVER"
        }
      ],
      "versions": []
    }
  ],
  "aliases": [
    "CVE-2021-25905",
    "GHSA-j8qq-58cr-8cc7"
  ],
  "database_specific": {
    "license": "CC0-1.0"
  },
  "details": "Affected versions of this crate creates an uninitialized buffer and passes it to user-provided `Read` implementation.\n\nThis is unsound, because it allows safe Rust code to exhibit an undefined behavior (read from uninitialized memory).\n\nThe flaw was corrected in version 0.1.1 by zero-initializing a newly allocated buffer\nbefore handing it to a user-provided `Read` implementation.",
  "id": "RUSTSEC-2021-0008",
  "modified": "2023-06-13T13:10:24Z",
  "published": "2021-01-02T12:00:00Z",
  "references": [
    {
      "type": "PACKAGE",
      "url": "https://crates.io/crates/bra"
    },
    {
      "type": "ADVISORY",
      "url": "https://rustsec.org/advisories/RUSTSEC-2021-0008.html"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/Enet4/bra-rs/issues/1"
    }
  ],
  "related": [],
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "reading on uninitialized buffer can cause UB (`impl\u003cR\u003e BufRead for GreedyAccessReader\u003cR\u003e`)"
}

CVE-2021-25905 (GCVE-0-2021-25905)

Vulnerability from cvelistv5 – Published: 2021-01-22 09:02 – Updated: 2024-08-03 20:11

Summary

An issue was discovered in the bra crate before 0.1.1 for Rust. It lacks soundness because it can read uninitialized memory.

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root Scorecard

References

1 reference

URL	Tags
https://rustsec.org/advisories/RUSTSEC-2021-0008.html	x_refsource_MISC

Show details on NVD website

JSON

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{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T20:11:28.439Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://rustsec.org/advisories/RUSTSEC-2021-0008.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 bra crate before 0.1.1 for Rust. It lacks soundness because it can read uninitialized memory."
        }
      ],
      "problemTypes": [
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              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2021-01-22T09:02:39.000Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://rustsec.org/advisories/RUSTSEC-2021-0008.html"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "cve@mitre.org",
          "ID": "CVE-2021-25905",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
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                      "product_name": "n/a",
                      "version": {
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                          {
                            "version_value": "n/a"
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                      }
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    "datePublished": "2021-01-22T09:02:39.000Z",
    "dateReserved": "2021-01-22T00:00:00.000Z",
    "dateUpdated": "2024-08-03T20:11:28.439Z",
    "state": "PUBLISHED"
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}

GHSA-J8QQ-58CR-8CC7

Vulnerability from github – Published: 2021-08-25 20:52 – Updated: 2022-05-05 00:44

Summary

Out of bounds read in bra

Details

Buffered Random Access (BRA) provides easy random memory access to a sequential source of data in Rust. This is achieved by greedily retaining all memory read from a given source. Buffered Random Access (BRA) provides easy random memory access to a sequential source of data in Rust. An issue was discovered in the bra crate before 0.1.1 for Rust. It lacks soundness because it can read uninitialized memory.

Severity

9.1 (Critical)


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

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "crates.io",
        "name": "bra"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.1.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2021-25905"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-125",
      "CWE-908"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2021-08-19T18:46:05Z",
    "nvd_published_at": "2021-01-26T18:16:00Z",
    "severity": "CRITICAL"
  },
  "details": "Buffered Random Access (BRA) provides easy random memory access to a sequential source of data in Rust. This is achieved by greedily retaining all memory read from a given source. Buffered Random Access (BRA) provides easy random memory access to a sequential source of data in Rust. An issue was discovered in the bra crate before 0.1.1 for Rust. It lacks soundness because it can read uninitialized memory.",
  "id": "GHSA-j8qq-58cr-8cc7",
  "modified": "2022-05-05T00:44:22Z",
  "published": "2021-08-25T20:52:53Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-25905"
    },
    {
      "type": "WEB",
      "url": "https://github.com/Enet4/bra-rs/issues/1"
    },
    {
      "type": "WEB",
      "url": "https://github.com/Enet4/bra-rs/commit/aabf5562f8c6374ab30f615b28e0cff9b5c79e5f"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/Enet4/bra-rs"
    },
    {
      "type": "WEB",
      "url": "https://rustsec.org/advisories/RUSTSEC-2021-0008.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Out of bounds read in bra"
}

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.

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-2021-0008 (CVE-2021-25905)

CVE-2021-25905 (GCVE-0-2021-25905)

GHSA-J8QQ-58CR-8CC7

Tags

Sightings

Nomenclature

Related by attack behaviour