nescalante urlregex up to 0.5.0 Backtracking index.js redos

CVSS Meta Temp Score
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CTI Interest Score
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5.2$0-$5k0.00

Summaryinfo

A vulnerability was found in nescalante urlregex up to 0.5.0. It has been rated as problematic. This issue affects some unknown processing of the file index.js of the component Backtracking. The manipulation leads to redos. This vulnerability is traded as CVE-2020-36830. It is possible to initiate the attack remotely. Furthermore, there is an exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in nescalante urlregex up to 0.5.0 and classified as problematic. This issue affects an unknown function of the file index.js of the component Backtracking. The manipulation with an unknown input leads to a redos vulnerability. Using CWE to declare the problem leads to CWE-1333. The product uses a regular expression with an inefficient, possibly exponential worst-case computational complexity that consumes excessive CPU cycles. Impacted is availability.

The weakness was shared 08/14/2020. The advisory is shared at github.com. The identification of this vulnerability is CVE-2020-36830. The exploitation is known to be easy. The attack may be initiated remotely. Technical details as well as a public exploit are known. MITRE ATT&CK project uses the attack technique T1449.003 for this issue.

The exploit is available at github.com. It is declared as proof-of-concept.

Upgrading to version 0.5.1 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch e5a085afe6abfaea1d1a78f54c45af9ef43ca1f9 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version. A possible mitigation has been published 2 months after the disclosure of the vulnerability. The advisory contains the following remark:

Security Fix for Regular Expression Denial of Service (ReDoS)

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.4
VulDB Meta Temp Score: 5.2

VulDB Base Score: 4.3
VulDB Temp Score: 3.9
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CNA Base Score: 4.3
CNA Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Redos
CWE: CWE-1333 / CWE-400 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: urlregex 0.5.1
Patch: e5a085afe6abfaea1d1a78f54c45af9ef43ca1f9

Timelineinfo

08/14/2020 🔍
09/16/2020 +33 days 🔍
08/31/2024 +1445 days 🔍
09/06/2024 +6 days 🔍

Sourcesinfo

Product: github.com

Advisory: github.com
Status: Confirmed

CVE: CVE-2020-36830 (🔍)
GCVE (CVE): GCVE-0-2020-36830
GCVE (VulDB): GCVE-100-276269
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 08/31/2024 13:23
Updated: 09/06/2024 06:10
Changes: 08/31/2024 13:23 (62), 09/02/2024 20:24 (18), 09/03/2024 11:08 (1), 09/06/2024 06:10 (11)
Complete: 🔍
Cache ID: 216::103

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