Vulnerability-Lookup

GHSA-MMC9-PWM7-QJ5W

Vulnerability from github – Published: 2021-08-25 20:56 – Updated: 2021-08-18 20:45

Summary

Unaligned memory access in rand_core

Details

Impact

Affected versions of this crate violated alignment when casting byte slices to integer slices, resulting in undefined behavior. rand_core::BlockRng::next_u64 and rand_core::BlockRng::fill_bytes are affected.

Patches

The flaw was corrected by Ralf Jung and Diggory Hardy for rand_core >= 0.4.2.

Workarounds

None.

References

See Rand's changelog.

For more information

If you have any questions or comments about this advisory, open an issue in the Rand repository.

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

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{
  "affected": [
    {
      "package": {
        "ecosystem": "crates.io",
        "name": "rand_core"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0.4.0"
            },
            {
              "fixed": "0.4.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "crates.io",
        "name": "rand_core"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.3.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2020-25576"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-704"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2021-08-18T20:45:24Z",
    "nvd_published_at": null,
    "severity": "CRITICAL"
  },
  "details": "### Impact\nAffected versions of this crate violated alignment when casting byte slices to integer slices, resulting in undefined behavior. `rand_core::BlockRng::next_u64` and `rand_core::BlockRng::fill_bytes` are affected.\n\n### Patches\nThe flaw was corrected by Ralf Jung and Diggory Hardy for `rand_core \u003e= 0.4.2`.\n\n### Workarounds\nNone.\n\n### References\nSee [Rand\u0027s changelog](https://github.com/rust-random/rand/blob/master/rand_core/CHANGELOG.md#050---2019-06-06).\n\n### For more information\nIf you have any questions or comments about this advisory, [open an issue in the Rand repository](https://github.com/rust-random/rand/issues/new/choose).\n\n",
  "id": "GHSA-mmc9-pwm7-qj5w",
  "modified": "2021-08-18T20:45:24Z",
  "published": "2021-08-25T20:56:50Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/rust-random/rand/security/advisories/GHSA-mmc9-pwm7-qj5w"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/rust-random/rand"
    },
    {
      "type": "WEB",
      "url": "https://github.com/rust-random/rand/blob/master/rand_core/CHANGELOG.md#050---2019-06-06"
    },
    {
      "type": "WEB",
      "url": "https://rustsec.org/advisories/RUSTSEC-2019-0035.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": "Unaligned memory access in rand_core"
}

CVE-2020-25576 (GCVE-0-2020-25576)

Vulnerability from cvelistv5 – Published: 2020-09-14 18:16 – Updated: 2024-08-04 15:33

Summary

An issue was discovered in the rand_core crate before 0.4.2 for Rust. Casting of byte slices to integer slices mishandles alignment constraints.

Severity

No CVSS data available.

CWE

Assigner

mitre CNA under the mitre root

CNA scorecard E 28/100 over 2325 records in the last 180 days details

References

1 reference

URL	Tags
https://rustsec.org/advisories/RUSTSEC-2019-0035.html	x_refsource_MISC

Show details on NVD website

JSON

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        "providerMetadata": {
          "dateUpdated": "2024-08-04T15:33:05.759Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://rustsec.org/advisories/RUSTSEC-2019-0035.html"
          }
        ],
        "title": "CVE Program Container"
      }
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          "vendor": "n/a",
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      "descriptions": [
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          "lang": "en",
          "value": "An issue was discovered in the rand_core crate before 0.4.2 for Rust. Casting of byte slices to integer slices mishandles alignment constraints."
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      "providerMetadata": {
        "dateUpdated": "2020-09-14T18:16:00.000Z",
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      },
      "references": [
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          "url": "https://rustsec.org/advisories/RUSTSEC-2019-0035.html"
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RUSTSEC-2019-0035 (GHSA-MMC9-PWM7-QJ5W)

Vulnerability from osv_rustsec – Published: 2019-04-19 12:00 – Updated: 2021-10-19 22:14 – Source website

Summary

Unaligned memory access

Details

Affected versions of this crate violated alignment when casting byte slices to integer slices, resulting in undefined behavior.

The flaw was corrected by Ralf Jung and Diggory Hardy.

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/rand_core	PACKAGE
	https://rustsec.org/advisories/RUSTSEC-2019-0035.html	ADVISORY
	https://github.com/rust-random/rand/blob/master/r…	WEB

JSON

To clipboard

{
  "affected": [
    {
      "database_specific": {
        "categories": [],
        "cvss": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
        "informational": "unsound"
      },
      "ecosystem_specific": {
        "affected_functions": null,
        "affects": {
          "arch": [],
          "functions": [
            "rand_core::BlockRng::fill_bytes",
            "rand_core::BlockRng::next_u64"
          ],
          "os": []
        }
      },
      "package": {
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            },
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  "aliases": [
    "GHSA-mmc9-pwm7-qj5w",
    "CVE-2020-25576"
  ],
  "database_specific": {
    "license": "CC0-1.0"
  },
  "details": "Affected versions of this crate violated alignment when casting byte slices to\ninteger slices, resulting in undefined behavior.\n\nThe flaw was corrected by Ralf Jung and Diggory Hardy.",
  "id": "RUSTSEC-2019-0035",
  "modified": "2021-10-19T22:14:35Z",
  "published": "2019-04-19T12:00:00Z",
  "references": [
    {
      "type": "PACKAGE",
      "url": "https://crates.io/crates/rand_core"
    },
    {
      "type": "ADVISORY",
      "url": "https://rustsec.org/advisories/RUSTSEC-2019-0035.html"
    },
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      "type": "WEB",
      "url": "https://github.com/rust-random/rand/blob/master/rand_core/CHANGELOG.md#050---2019-06-06"
    }
  ],
  "related": [],
  "severity": [
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      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Unaligned memory access"
}

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

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GHSA-MMC9-PWM7-QJ5W

Impact

Patches

Workarounds

References

For more information

CVE-2020-25576 (GCVE-0-2020-25576)

RUSTSEC-2019-0035 (GHSA-MMC9-PWM7-QJ5W)

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Sightings

Nomenclature

Vulnerability timeline

Related by attack behaviour