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Denial of service in GJSON

High severity GitHub Reviewed Published Jun 23, 2021 to the GitHub Advisory Database • Updated Aug 30, 2023

Package

gomod github.com/tidwall/gjson (Go)

Affected versions

< 1.6.4

Patched versions

1.6.4

Description

GJSON before 1.6.4 allows attackers to cause a denial of service via crafted JSON. Due to improper bounds checking, maliciously crafted JSON objects can cause an out-of-bounds panic. If parsing user input, this may be used as a denial of service vector.

References

Reviewed May 12, 2021
Published to the GitHub Advisory Database Jun 23, 2021
Last updated Aug 30, 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
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:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS score

Exploit Prediction Scoring System (EPSS)

This score estimates the probability of this vulnerability being exploited within the next 30 days. Data provided by FIRST.
(64th percentile)

Weaknesses

Uncontrolled Resource Consumption

The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources. Learn more on MITRE.

CVE ID

CVE-2020-35380

GHSA ID

GHSA-w942-gw6m-p62c

Source code

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