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Buffer Overflow in vyper

High severity GitHub Reviewed Published Apr 13, 2022 in vyperlang/vyper • Updated Jan 27, 2023

Package

pip vyper (pip)

Affected versions

< 0.3.2

Patched versions

0.3.2

Description

Impact

Importing a function from a JSON interface which returns bytes generates bytecode which does not clamp bytes length, potentially resulting in a buffer overrun.

Patches

0.3.2 (as of vyperlang/vyper@049dbdc)

Workarounds

Use .vy interfaces.

References

@charles-cooper charles-cooper published to vyperlang/vyper Apr 13, 2022
Published by the National Vulnerability Database Apr 13, 2022
Published to the GitHub Advisory Database Apr 20, 2022
Reviewed Apr 20, 2022
Last updated Jan 27, 2023

Severity

High

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
Required
Scope
Unchanged
Confidentiality
Low
Integrity
High
Availability
None

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:N

EPSS score

0.154%
(53rd percentile)

CVE ID

CVE-2022-24788

GHSA ID

GHSA-4mrx-6fxm-8jpg

Source code

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