CVE-2020-36830 : A vulnerability was found in nescalante urlregex up to 0.5.0 and classified as p

A vulnerability was found in nescalante urlregex up to 0.5.0 and classified as problematic. This issue affects some unknown processing of the file index.js of the component Backtracking. The manipulation leads to inefficient regular expression complexity. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. Upgrading to version 0.5.1 is able to address this issue. The identifier of the patch is e5a085afe6abfaea1d1a78f54c45af9ef43ca1f9. It is recommended to upgrade the affected component.

Published 2024-09-02 16:00:06

Updated 2024-09-05 21:47:09

Source VulDB

View at NVD, CVE.org

Products affected by CVE-2020-36830

Nescalante » Urlregex
Versions before (<) 0.5.1
cpe:2.3:a:nescalante:urlregex:*:*:*:*:*:*:*:*
Matching versions

Exploit prediction scoring system (EPSS) score for CVE-2020-36830

EPSS FAQ

0.07%

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

~ 21 %

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

CVSS scores for CVE-2020-36830

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source	First Seen
4.0		AV:N/AC:L/Au:S/C:N/I:N/A:P	N/A	N/A	VulDB	2024-09-02
Access Vector: Network Access Complexity: Low Authentication: Single Confidentiality Impact: None Integrity Impact: None Availability Impact: Partial
4.0	MEDIUM	AV:N/AC:L/Au:S/C:N/I:N/A:P	8.0	2.9	VulDB	2024-09-02
Access Vector: Network Access Complexity: Low Authentication: Single Confidentiality Impact: None Integrity Impact: None Availability Impact: Partial
4.3	MEDIUM	CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L	N/A	N/A	VulDB	2024-09-02
Attack Vector: Network Attack Complexity: Low Privileges Required: Low User Interaction: None Scope: Unchanged Confidentiality: None Integrity: None Availability: Low
4.3	MEDIUM	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L	N/A	N/A	VulDB	2024-09-02
Attack Vector: Network Attack Complexity: Low Privileges Required: Low User Interaction: None Scope: Unchanged Confidentiality: None Integrity: None Availability: Low
4.3	MEDIUM	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L	2.8	1.4	VulDB	2024-09-02
Attack Vector: Network Attack Complexity: Low Privileges Required: Low User Interaction: None Scope: Unchanged Confidentiality: None Integrity: None Availability: Low
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	2024-09-05
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: None Integrity: None Availability: High
5.3	MEDIUM	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/V...	N/A	N/A	VulDB	2024-09-02
Attack Vector: Network Attack Complexity: Low Attack Requirements: None Privileges Required: Low User Interaction: None Confidentiality (VC): None Integrity (VI): None Availability (VA): Low
5.3	MEDIUM	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/V...	N/A	N/A	VulDB	2024-09-02
Attack Vector: Network Attack Complexity: Low Attack Requirements: None Privileges Required: Low User Interaction: None Confidentiality (VC): None Integrity (VI): None Availability (VA): Low

CWE ids for CVE-2020-36830

CWE-1333 Inefficient Regular Expression Complexity

The product uses a regular expression with an inefficient, possibly exponential worst-case computational complexity that consumes excessive CPU cycles.
Assigned by:
- 1af790b2-7ee1-4545-860a-a788eba489b5 (Primary)
- cna@vuldb.com (Primary)

References for CVE-2020-36830

https://vuldb.com/?id.276269

CVE-2020-36830 nescalante urlregex Backtracking index.js redos
Third Party Advisory
https://vuldb.com/?ctiid.276269

CVE-2020-36830 nescalante urlregex Backtracking index.js redos
Permissions Required
https://github.com/nescalante/urlregex/pull/8

Security Fix for Regular Expression Denial of Service (ReDoS) - huntr.dev by huntr-helper · Pull Request #8 · nescalante/urlregex · GitHub
Exploit
https://github.com/nescalante/urlregex/releases/tag/v0.5.1

Release v0.5.1 · nescalante/urlregex · GitHub
Release Notes
https://github.com/nescalante/urlregex/commit/e5a085afe6abfaea1d1a78f54c45af9ef43ca1f9

Security Fix for Regular Expression Denial of Service (ReDoS) - huntr… · nescalante/urlregex@e5a085a · GitHub
Patch

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Vulnerability Details : CVE-2020-36830

Products affected by CVE-2020-36830

Exploit prediction scoring system (EPSS) score for CVE-2020-36830

CVSS scores for CVE-2020-36830

CWE ids for CVE-2020-36830

References for CVE-2020-36830