Vulnerability-Lookup

rustsec-2021-0012

Vulnerability from osv_rustsec

Published

2021-01-02 12:00

Modified

2023-06-13 13:10

Summary

Reading uninitialized memory can cause UB (`Deserializer::read_vec`)

Details

Deserializer::read_vec() created an uninitialized buffer and passes it to a user-provided Read implementation (Deserializer.reader.read_exact()).

Passing an uninitialized buffer to an arbitrary Read implementation is currently defined as undefined behavior in Rust. Official documentation for the Read trait explains the following: "It is your responsibility to make sure that buf is initialized before calling read. Calling read with an uninitialized buf (of the kind one obtains via MaybeUninit) is not safe, and can lead to undefined behavior."

The flaw was corrected in commit ce310f7 by zero-initializing the newly allocated buffer before handing it to Deserializer.reader.read_exact().

JSON

To clipboard

{
  "affected": [
    {
      "database_specific": {
        "categories": [
          "memory-exposure"
        ],
        "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": "cdr",
        "purl": "pkg:cargo/cdr"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0.0.0-0"
            },
            {
              "fixed": "0.2.4"
            }
          ],
          "type": "SEMVER"
        }
      ],
      "versions": []
    }
  ],
  "aliases": [
    "CVE-2021-26305",
    "GHSA-37jj-wp7g-7wj4"
  ],
  "database_specific": {
    "license": "CC0-1.0"
  },
  "details": "`Deserializer::read_vec()` created an uninitialized buffer and passes it to a user-provided `Read` implementation (`Deserializer.reader.read_exact()`).\n\nPassing an uninitialized buffer to an arbitrary `Read` implementation is currently defined as undefined behavior in Rust. Official documentation for the `Read` trait explains the following: \"It is your responsibility to make sure that buf is initialized before calling read. Calling read with an uninitialized buf (of the kind one obtains via MaybeUninit\u003cT\u003e) is not safe, and can lead to undefined behavior.\"\n\nThe flaw was corrected in commit ce310f7 by zero-initializing the newly allocated buffer before handing it to `Deserializer.reader.read_exact()`.",
  "id": "RUSTSEC-2021-0012",
  "modified": "2023-06-13T13:10:24Z",
  "published": "2021-01-02T12:00:00Z",
  "references": [
    {
      "type": "PACKAGE",
      "url": "https://crates.io/crates/cdr"
    },
    {
      "type": "ADVISORY",
      "url": "https://rustsec.org/advisories/RUSTSEC-2021-0012.html"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/hrektts/cdr-rs/issues/10"
    }
  ],
  "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": "Reading uninitialized memory can cause UB (`Deserializer::read_vec`)"
}

GHSA-37JJ-WP7G-7WJ4

Vulnerability from github – Published: 2021-08-25 20:53 – Updated: 2021-08-19 17:53

Summary

Read of uninitialized memory in cdr

Details

An issue was discovered in Deserializer::read_vec in the cdr crate before 0.2.4 for Rust. A user-provided Read implementation can gain access to the old contents of newly allocated heap memory, violating soundness.

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": "cdr"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.2.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2021-26305"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-908"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2021-08-19T17:53:09Z",
    "nvd_published_at": null,
    "severity": "CRITICAL"
  },
  "details": "An issue was discovered in Deserializer::read_vec in the cdr crate before 0.2.4 for Rust. A user-provided Read implementation can gain access to the old contents of newly allocated heap memory, violating soundness.",
  "id": "GHSA-37jj-wp7g-7wj4",
  "modified": "2021-08-19T17:53:09Z",
  "published": "2021-08-25T20:53:12Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-26305"
    },
    {
      "type": "WEB",
      "url": "https://github.com/hrektts/cdr-rs/issues/10"
    },
    {
      "type": "WEB",
      "url": "https://github.com/hrektts/cdr-rs/pull/11"
    },
    {
      "type": "WEB",
      "url": "https://github.com/hrektts/cdr-rs/commit/0e6006de464caa331643f86cd2d9ba3b32b09833"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/hrektts/cdr-rs"
    },
    {
      "type": "WEB",
      "url": "https://rustsec.org/advisories/RUSTSEC-2021-0012.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": "Read of uninitialized memory in cdr"
}

CVE-2021-26305 (GCVE-0-2021-26305)

Vulnerability from cvelistv5 – Published: 2021-01-29 02:27 – Updated: 2024-08-03 20:19

Summary

Severity ?

No CVSS data available.

CWE

Assigner

mitre

References

URL

Tags

https://rustsec.org/advisories/RUSTSEC-2021-0012.html

x_refsource_MISC

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T20:19:20.130Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://rustsec.org/advisories/RUSTSEC-2021-0012.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 Deserializer::read_vec in the cdr crate before 0.2.4 for Rust. A user-provided Read implementation can gain access to the old contents of newly allocated heap memory, violating soundness."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2021-01-29T02:27:42",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://rustsec.org/advisories/RUSTSEC-2021-0012.html"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "cve@mitre.org",
          "ID": "CVE-2021-26305",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "n/a",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "n/a"
                          }
                        ]
                      }
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                },
                "vendor_name": "n/a"
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          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
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        "references": {
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            {
              "name": "https://rustsec.org/advisories/RUSTSEC-2021-0012.html",
              "refsource": "MISC",
              "url": "https://rustsec.org/advisories/RUSTSEC-2021-0012.html"
            }
          ]
        }
      }
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  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2021-26305",
    "datePublished": "2021-01-29T02:27:42",
    "dateReserved": "2021-01-29T00:00:00",
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    "state": "PUBLISHED"
  },
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}

Sightings

Author	Source	Type	Date

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.

Detection rules are retrieved from Rulezet.

Action not permitted

rustsec-2021-0012

Vulnerability from osv_rustsec

GHSA-37JJ-WP7G-7WJ4

CVE-2021-26305 (GCVE-0-2021-26305)

Tags

Sightings

Nomenclature