pysec-2024-207
Vulnerability from pysec
Published
2024-04-25 18:15
Modified
2025-01-19 19:19
Severity ?
Details
Vyper is a pythonic Smart Contract Language for the Ethereum virtual machine. In versions 0.3.10 and prior, using the slice builtin can result in a double eval vulnerability when the buffer argument is either msg.data, self.code or <address>.code and either the start or length arguments have side-effects. It can be easily triggered only with the versions <0.3.4 as 0.3.4 introduced the unique symbol fence. No vulnerable production contracts were found. Additionally, double evaluation of side-effects should be easily discoverable in client tests. As such, the impact is low. As of time of publication, no fixed versions are available.
Impacted products
| Name | purl | vyper | pkg:pypi/vyper |
|---|
Aliases
{
"affected": [
{
"package": {
"ecosystem": "PyPI",
"name": "vyper",
"purl": "pkg:pypi/vyper"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "0.4.0"
}
],
"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",
"0.3.10",
"0.3.10rc1",
"0.3.10rc2",
"0.3.10rc3",
"0.3.10rc4",
"0.3.10rc5",
"0.3.2",
"0.3.3",
"0.3.4",
"0.3.5",
"0.3.6",
"0.3.7",
"0.3.8",
"0.3.9",
"0.4.0b1",
"0.4.0b2",
"0.4.0b3",
"0.4.0b4",
"0.4.0b5",
"0.4.0b6",
"0.4.0rc1",
"0.4.0rc2",
"0.4.0rc3",
"0.4.0rc4",
"0.4.0rc5",
"0.4.0rc6"
]
}
],
"aliases": [
"CVE-2024-32646"
],
"details": "Vyper is a pythonic Smart Contract Language for the Ethereum virtual machine. In versions 0.3.10 and prior, using the `slice` builtin can result in a double eval vulnerability when the buffer argument is either `msg.data`, `self.code` or `\u003caddress\u003e.code` and either the `start` or `length` arguments have side-effects. It can be easily triggered only with the versions `\u003c0.3.4` as `0.3.4` introduced the unique symbol fence. No vulnerable production contracts were found. Additionally, double evaluation of side-effects should be easily discoverable in client tests. As such, the impact is low. As of time of publication, no fixed versions are available.\n\n",
"id": "PYSEC-2024-207",
"modified": "2025-01-19T19:19:01.605918+00:00",
"published": "2024-04-25T18:15:08+00:00",
"references": [
{
"type": "ADVISORY",
"url": "https://github.com/vyperlang/vyper/security/advisories/GHSA-r56x-j438-vw5m"
}
],
"related": [
"GHSA-r56x-j438-vw5m",
"GHSA-r56x-j438-vw5m"
],
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
"type": "CVSS_V3"
}
]
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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