pysec - pysec-2022-198

PYSEC-2022-198

Vulnerability from pysec - Published: 2022-04-13 22:15 - Updated: 2022-05-17 23:28

Details

Vyper is a pythonic Smart Contract Language for the ethereum virtual machine. In affected versions, the return of <iface>.returns_int128() is not validated to fall within the bounds of int128. This issue can result in a misinterpretation of the integer value and lead to incorrect behavior. As of v0.3.0, <iface>.returns_int128() is validated in simple expressions, but not complex expressions. Users are advised to upgrade. There is no known workaround for this issue.

Impacted products

Name	purl
vyper	pkg:pypi/vyper

Aliases

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "vyper",
        "purl": "pkg:pypi/vyper"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "049dbdc647b2ce838fae7c188e6bb09cf16e470b"
            }
          ],
          "repo": "https://github.com/vyperlang/vyper",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.3.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.1.0b1",
        "0.1.0b10",
        "0.1.0b11",
        "0.1.0b12",
        "0.1.0b13",
        "0.1.0b14",
        "0.1.0b15",
        "0.1.0b16",
        "0.1.0b17",
        "0.1.0b2",
        "0.1.0b3",
        "0.1.0b4",
        "0.1.0b5",
        "0.1.0b6",
        "0.1.0b7",
        "0.1.0b8",
        "0.1.0b9",
        "0.2.1",
        "0.2.10",
        "0.2.11",
        "0.2.12",
        "0.2.13",
        "0.2.14",
        "0.2.15",
        "0.2.16",
        "0.2.2",
        "0.2.3",
        "0.2.4",
        "0.2.5",
        "0.2.6",
        "0.2.7",
        "0.2.8",
        "0.2.9",
        "0.3.0",
        "0.3.1"
      ]
    }
  ],
  "aliases": [
    "CVE-2022-24845",
    "GHSA-j2x6-9323-fp7h"
  ],
  "details": "Vyper is a pythonic Smart Contract Language for the ethereum virtual machine. In affected versions, the return of `\u003ciface\u003e.returns_int128()` is not validated to fall within the bounds of `int128`. This issue can result in a misinterpretation of the integer value and lead to incorrect behavior. As of v0.3.0, `\u003ciface\u003e.returns_int128()` is validated in simple expressions, but not complex expressions. Users are advised to upgrade. There is no known workaround for this issue.",
  "id": "PYSEC-2022-198",
  "modified": "2022-05-17T23:28:35.566517Z",
  "published": "2022-04-13T22:15:00Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/vyperlang/vyper/security/advisories/GHSA-j2x6-9323-fp7h"
    },
    {
      "type": "FIX",
      "url": "https://github.com/vyperlang/vyper/commit/049dbdc647b2ce838fae7c188e6bb09cf16e470b"
    }
  ]
}

CVE-2022-24845 (GCVE-0-2022-24845)

Vulnerability from cvelistv5 – Published: 2022-04-13 21:15 – Updated: 2025-04-22 18:15

Summary

Vyper is a pythonic Smart Contract Language for the ethereum virtual machine. In affected versions, the return of `<iface>.returns_int128()` is not validated to fall within the bounds of `int128`. This issue can result in a misinterpretation of the integer value and lead to incorrect behavior. As of v0.3.0, `<iface>.returns_int128()` is validated in simple expressions, but not complex expressions. Users are advised to upgrade. There is no known workaround for this issue.

Severity ?

8.8 (High)


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

CWE

CWE-190 - Integer Overflow or Wraparound

Assigner

GitHub_M

References

URL

Tags

	https://github.com/vyperlang/vyper/commit/049dbdc…	x_refsource_MISC
	https://github.com/vyperlang/vyper/security/advis…	x_refsource_CONFIRM

Impacted products

	Vendor	Product	Version
	vyperlang	vyper	Affected: < 0.3.2

Show details on NVD website

JSON

To clipboard

{
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            "url": "https://github.com/vyperlang/vyper/commit/049dbdc647b2ce838fae7c188e6bb09cf16e470b"
          },
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            ],
            "url": "https://github.com/vyperlang/vyper/security/advisories/GHSA-j2x6-9323-fp7h"
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        ],
        "title": "CVE Program Container"
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        "metrics": [
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                "id": "CVE-2022-24845",
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                  },
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                  },
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                "role": "CISA Coordinator",
                "timestamp": "2025-04-22T15:43:42.992287Z",
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GHSA-J2X6-9323-FP7H

Vulnerability from github – Published: 2022-04-22 20:24 – Updated: 2022-04-22 20:24

Summary

Integer bounds error in Vyper

Details

Impact

in the following code, the return of <iface>.returns_int128() is not validated to fall within the bounds of int128. as of v0.3.0, <iface>.returns_int128() is validated in simple expressions, but not complex expressions.

interface iface:
    def returns_int128() -> int128: view
    def returns_Bytes33() -> Bytes[33]: view

x: iface

@external
def call_out():
    x: int128 = self.x.returns_int128()  # affected, <0.3.0
    y: uint256 = convert(self.x.returns_int128(), uint256)  # affected, <0.3.2
    z: Bytes[33] = concat(self.x.returns_Bytes33(), b"")  # affected >= 0.3.0, <0.3.2

Patches

0.3.2 (as of https://github.com/vyperlang/vyper/commit/049dbdc647b2ce838fae7c188e6bb09cf16e470b)

Workarounds

Break up operations involving external calls into multiple statements. For instance, instead of the example above, use

x: int128 = self.x.returns_int128()
y: uint256 = convert(x, uint256)

Severity ?

8.8 (High)


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

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "vyper"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.3.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2022-24845"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-190"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2022-04-22T20:24:13Z",
    "nvd_published_at": "2022-04-13T22:15:00Z",
    "severity": "HIGH"
  },
  "details": "### Impact\nin the following code, the return of `\u003ciface\u003e.returns_int128()` is not validated to fall within the bounds of `int128`. as of v0.3.0, `\u003ciface\u003e.returns_int128()` is validated in simple expressions, but not complex expressions.\n```vyper\ninterface iface:\n    def returns_int128() -\u003e int128: view\n    def returns_Bytes33() -\u003e Bytes[33]: view\n\nx: iface\n \n@external\ndef call_out():\n    x: int128 = self.x.returns_int128()  # affected, \u003c0.3.0\n    y: uint256 = convert(self.x.returns_int128(), uint256)  # affected, \u003c0.3.2\n    z: Bytes[33] = concat(self.x.returns_Bytes33(), b\"\")  # affected \u003e= 0.3.0, \u003c0.3.2\n```\n\n### Patches\n0.3.2 (as of https://github.com/vyperlang/vyper/commit/049dbdc647b2ce838fae7c188e6bb09cf16e470b)\n\n### Workarounds\nBreak up operations involving external calls into multiple statements. For instance, instead of the example above, use\n```\nx: int128 = self.x.returns_int128()\ny: uint256 = convert(x, uint256)\n```",
  "id": "GHSA-j2x6-9323-fp7h",
  "modified": "2022-04-22T20:24:13Z",
  "published": "2022-04-22T20:24:13Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/vyperlang/vyper/security/advisories/GHSA-j2x6-9323-fp7h"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-24845"
    },
    {
      "type": "WEB",
      "url": "https://github.com/vyperlang/vyper/commit/049dbdc647b2ce838fae7c188e6bb09cf16e470b"
    },
    {
      "type": "WEB",
      "url": "https://github.com/pypa/advisory-database/tree/main/vulns/vyper/PYSEC-2022-198.yaml"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/vyperlang/vyper"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Integer bounds error in Vyper"
}

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

PYSEC-2022-198

CVE-2022-24845 (GCVE-0-2022-24845)

GHSA-J2X6-9323-FP7H

Impact

Patches

Workarounds

Tags

Sightings

Nomenclature