CVE-2021-42836 : GJSON before 1.9.3 allows a ReDoS (regular expression denial of service) attack.

GJSON before 1.9.3 allows a ReDoS (regular expression denial of service) attack.

Published 2021-10-22 18:15:15

Updated 2022-05-03 16:04:40

Source MITRE

View at NVD, CVE.org

Vulnerability category: Denial of service

Products affected by CVE-2021-42836

Gjson Project » Gjson
Versions before (<) 1.9.3
cpe:2.3:a:gjson_project:gjson:*:*:*:*:*:*:*:*
Matching versions

EPSS FAQ

0.35%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 72 %

Percentile, the proportion of vulnerabilities that are scored at or less

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
5.0	MEDIUM	AV:N/AC:L/Au:N/C:N/I:N/A:P	10.0	2.9	NIST
Access Vector: Network Access Complexity: Low Authentication: None Confidentiality Impact: None Integrity Impact: None Availability Impact: Partial
7.5	HIGH	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	3.9	3.6	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: None Integrity: None Availability: High

CWE-400 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.

Assigned by: nvd@nist.gov (Primary)

https://github.com/tidwall/gjson/commit/590010fdac311cc8990ef5c97448d4fec8f29944

Update match dependency · tidwall/gjson@590010f · GitHub
Patch;Third Party Advisory
https://github.com/tidwall/gjson/commit/77a57fda87dca6d0d7d4627d512a630f89a91c96

Limit the complexity of "like" queries that match on a pattern. · tidwall/gjson@77a57fd · GitHub
Patch;Third Party Advisory
https://github.com/tidwall/gjson/compare/v1.9.2...v1.9.3

Comparing v1.9.2...v1.9.3 · tidwall/gjson · GitHub
Release Notes;Third Party Advisory
https://github.com/tidwall/gjson/issues/236

gjson.Get can cause DoS attacks. GJSON <= 1.9.1 allows attackers to cause a redos via crafted JSON input. · Issue #236 · tidwall/gjson · GitHub
Exploit;Issue Tracking;Third Party Advisory
https://github.com/tidwall/gjson/issues/237

gjson.Get can cause DoS attacks. GJSON <= 1.9.2 allows attackers to cause a redos via crafted JSON input. · Issue #237 · tidwall/gjson · GitHub
Exploit;Issue Tracking;Patch;Third Party Advisory

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