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Golf may allow attacker to bypass CSRF protections due to weak PRNG

High severity GitHub Reviewed Published Dec 28, 2022 to the GitHub Advisory Database • Updated Aug 29, 2023

Package

gomod github.com/dinever/golf (Go)

Affected versions

< 0.3.0

Patched versions

0.3.0

Description

CSRF tokens are generated using math/rand, which is not a cryptographically secure random number generator, allowing an attacker to predict values and bypass CSRF protections with relatively few requests.

References

Published by the National Vulnerability Database Dec 27, 2022
Published to the GitHub Advisory Database Dec 28, 2022
Reviewed Dec 30, 2022
Last updated Aug 29, 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
High
Integrity
High
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:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS score

0.123%
(48th percentile)

Weaknesses

CVE ID

CVE-2016-15005

GHSA ID

GHSA-q9qr-jwpw-3qvv

Source code

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