Vulnerability-Lookup

RUSTSEC-2021-0048 (CVE-2021-29939)

Vulnerability from osv_rustsec – Published: 2021-02-19 12:00 – Updated: 2023-06-13 13:10 – Source website

Summary

StackVec::extend can write out of bounds when size_hint is incorrect

Details

StackVec::extend used the lower and upper bounds from an Iterator's size_hint to determine how many items to push into the stack based vector.

If the size_hint implementation returned a lower bound that was larger than the upper bound, StackVec would write out of bounds and overwrite memory on the stack. As mentioned by the size_hint documentation, size_hint is mainly for optimization and incorrect implementations should not lead to memory safety issues.

Severity

7.3 (High)


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

References

URL

Type

	https://crates.io/crates/stackvector	PACKAGE
	https://rustsec.org/advisories/RUSTSEC-2021-0048.html	ADVISORY
	https://github.com/Alexhuszagh/rust-stackvector/i…	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:L/I:L/A:L",
        "informational": null
      },
      "ecosystem_specific": {
        "affected_functions": null,
        "affects": {
          "arch": [],
          "functions": [],
          "os": []
        }
      },
      "package": {
        "ecosystem": "crates.io",
        "name": "stackvector",
        "purl": "pkg:cargo/stackvector"
      },
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        {
          "events": [
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              "introduced": "0.0.0-0"
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          ],
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        }
      ],
      "versions": []
    }
  ],
  "aliases": [
    "CVE-2021-29939",
    "GHSA-9frf-r7c7-j2vg"
  ],
  "database_specific": {
    "license": "CC0-1.0"
  },
  "details": "`StackVec::extend` used the lower and upper bounds from an Iterator\u0027s\n`size_hint` to determine how many items to push into the stack based vector.\n\nIf the `size_hint` implementation returned a lower bound that was larger than\nthe upper bound, `StackVec` would write out of bounds and overwrite memory\non the stack. As mentioned by the [size_hint](https://doc.rust-lang.org/std/iter/trait.Iterator.html#provided-methods)\ndocumentation, `size_hint` is mainly for optimization and incorrect\nimplementations should not lead to memory safety issues.",
  "id": "RUSTSEC-2021-0048",
  "modified": "2023-06-13T13:10:24Z",
  "published": "2021-02-19T12:00:00Z",
  "references": [
    {
      "type": "PACKAGE",
      "url": "https://crates.io/crates/stackvector"
    },
    {
      "type": "ADVISORY",
      "url": "https://rustsec.org/advisories/RUSTSEC-2021-0048.html"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/Alexhuszagh/rust-stackvector/issues/2"
    }
  ],
  "related": [],
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L",
      "type": "CVSS_V3"
    }
  ],
  "summary": "StackVec::extend can write out of bounds when size_hint is incorrect"
}

CVE-2021-29939 (GCVE-0-2021-29939)

Vulnerability from cvelistv5 – Published: 2021-04-01 04:23 – Updated: 2024-11-19 16:11

Summary

An issue was discovered in the stackvector crate through 2021-02-19 for Rust. There is an out-of-bounds write in StackVec::extend if size_hint provides certain anomalous data.

Severity

No CVSS data available.

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-11-19 16:11 UTC

CWE

Assigner

mitre mitre root

References

1 reference

URL	Tags
https://rustsec.org/advisories/RUSTSEC-2021-0048.html	x_refsource_MISC

Show details on NVD website

JSON

To clipboard

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                "timestamp": "2024-11-19T16:11:10.891834Z",
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GHSA-9FRF-R7C7-J2VG

Vulnerability from github – Published: 2021-08-25 20:54 – Updated: 2023-06-13 20:54

Summary

Out of bounds write in stackvector

Details

StackVec::extend used the lower and upper bounds from an Iterator's size_hint to determine how many items to push into the stack based vector. If the size_hint implementation returned a lower bound that was larger than the upper bound, StackVec would write out of bounds and overwrite memory on the stack. As mentioned by the size_hint documentation, size_hint is mainly for optimization and incorrect implementations should not lead to memory safety issues.

Severity

7.3 (High)


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

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "crates.io",
        "name": "stackvector"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.0.9"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2021-29939"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-787"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2021-08-19T17:15:11Z",
    "nvd_published_at": "2021-04-01T05:15:00Z",
    "severity": "HIGH"
  },
  "details": "StackVec::extend used the lower and upper bounds from an Iterator\u0027s size_hint to determine how many items to push into the stack based vector. If the size_hint implementation returned a lower bound that was larger than the upper bound, StackVec would write out of bounds and overwrite memory on the stack. As mentioned by the size_hint documentation, size_hint is mainly for optimization and incorrect implementations should not lead to memory safety issues.",
  "id": "GHSA-9frf-r7c7-j2vg",
  "modified": "2023-06-13T20:54:15Z",
  "published": "2021-08-25T20:54:14Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-29939"
    },
    {
      "type": "WEB",
      "url": "https://github.com/Alexhuszagh/rust-stackvector/issues/2"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/Alexhuszagh/rust-stackvector"
    },
    {
      "type": "WEB",
      "url": "https://rustsec.org/advisories/RUSTSEC-2021-0048.html"
    }
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  "schema_version": "1.4.0",
  "severity": [
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      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Out of bounds write in stackvector"
}

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.

Detection rules are retrieved from Rulezet.

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-2021-0048 (CVE-2021-29939)

CVE-2021-29939 (GCVE-0-2021-29939)

GHSA-9FRF-R7C7-J2VG

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Nomenclature

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