CVE-2024-32481

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Source
https://cve.org/CVERecord?id=CVE-2024-32481
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-32481.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2024-32481
Aliases
Published
2024-04-25T17:00:54.082Z
Modified
2026-07-15T02:11:33.110415581Z
Severity
  • 5.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N CVSS Calculator
Summary
vyper's range(start, start + N) reverts for negative numbers
Details

Vyper is a pythonic Smart Contract Language for the Ethereum virtual machine. Starting in version 0.3.8 and prior to version 0.4.0b1, when looping over a range of the form range(start, start + N), if start is negative, the execution will always revert. This issue is caused by an incorrect assertion inserted by the code generation of the range stmt.parse_For_range(). The issue arises when start is signed, instead of using sle, le is used and start is interpreted as an unsigned integer for the comparison. If it is a negative number, its 255th bit is set to 1 and is hence interpreted as a very large unsigned integer making the assertion always fail. Any contract having a range(start, start + N) where start is a signed integer with the possibility for start to be negative is affected. If a call goes through the loop while supplying a negative start the execution will revert. Version 0.4.0b1 fixes the issue.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/32xxx/CVE-2024-32481.json",
    "cwe_ids": [
        "CWE-681"
    ],
    "cna_assigner": "GitHub_M"
}
References

Affected packages

Git / github.com/vyperlang/vyper

Affected ranges

Type
GIT
Repo
https://github.com/vyperlang/vyper
Events
Introduced
036f153683e0d55b890305eb4c77680a0872fcba
Last affected
9136169468f317a53b4e7448389aa315f90b95ba
Introduced
e9db8d9f7486eae38f5b86531629019ad28f514e
Fixed
3de1415ee77a9244eb04bdb695e249d3ec9ed868
Fixed
5319cfbe14951e007ccdb323257e5ada869b35d5
Database specific 
{
    "extracted_events": [
        {
            "introduced": "0.3.8"
        },
        {
            "last_affected": "0.3.10"
        },
        {
            "introduced": "0.4.0-NA"
        },
        {
            "last_affected": "0.4.0-NA"
        }
    ],
    "source": [
        "CPE_RANGE",
        "CPE_STRING",
        "REFERENCES"
    ],
    "cpe": [
        "cpe:2.3:a:vyperlang:vyper:*:*:*:*:*:python:*:*",
        "cpe:2.3:a:vyperlang:vyper:0.4.0:-:*:*:*:python:*:*"
    ]
}

Affected versions

0.*
0.4.0-NA
v0.*
v0.3.10
v0.3.10rc1
v0.3.10rc2
v0.3.10rc3
v0.3.10rc4
v0.3.10rc5
v0.3.8
v0.3.9

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-32481.json"