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Data races in generator

Moderate severity GitHub Reviewed Published Aug 25, 2021 to the GitHub Advisory Database • Updated Feb 3, 2023

Package

cargo generator (Rust)

Affected versions

< 0.7.0

Patched versions

0.7.0

Description

The Generator type is an iterable which uses a generator function that yields
values. In affected versions of the crate, the provided function yielding values
had no Send bounds despite the Generator itself implementing Send.

The generator function lacking a Send bound means that types that are
dangerous to send across threads such as Rc could be sent as part of a
generator, potentially leading to data races.

This flaw was fixed in commit f7d120a3b
by enforcing that the generator function be bound by Send.

References

Published by the National Vulnerability Database Aug 8, 2021
Reviewed Aug 18, 2021
Published to the GitHub Advisory Database Aug 25, 2021
Last updated Feb 3, 2023

Severity

Moderate

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
High
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

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:H/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS score

0.117%
(47th percentile)

Weaknesses

CVE ID

CVE-2020-36471

GHSA ID

GHSA-w3g5-2848-2v8r

Source code

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