chbrown rfc6902 pointer.ts prototype pollution

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.

A vulnerability classified as problematic has been found in chbrown rfc6902 (the affected version unknown). This affects an unknown part of the file pointer.ts. The manipulation with an unknown input leads to a prototype pollution vulnerability. CWE is classifying the issue as CWE-1321. The software receives input from an upstream component that specifies attributes that are to be initialized or updated in an object, but it does not properly control modifications of attributes of the object prototype. This is going to have an impact on confidentiality, integrity, and availability.

The weakness was presented 12/15/2022 as 76. It is possible to read the advisory at This vulnerability is uniquely identified as CVE-2021-4245. Technical details and a public exploit are known. The attack technique deployed by this issue is T1059 according to MITRE ATT&CK.

The exploit is shared for download at It is declared as proof-of-concept.

Applying the patch c006ce9faa43d31edb34924f1df7b79c137096cf is able to eliminate this problem. The bugfix is ready for download at





  • open-source

CPE 2.3info

CPE 2.2info


VulDB Meta Base Score: 6.9
VulDB Meta Temp Score: 6.8

VulDB Base Score: 5.5
VulDB Temp Score: 5.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔒

CNA Base Score: 5.5
CNA Vector (VulDB): 🔒



VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍


Class: Prototype pollution
CWE: CWE-1321 / CWE-94 / CWE-74
ATT&CK: T1059

Local: No
Remote: Partially

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

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒


Threat Intelligenceinfo

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


Recommended: Patch
Status: 🔍

0-Day Time: 🔒

Patch: c006ce9faa43d31edb34924f1df7b79c137096cf


12/15/2022 Advisory disclosed
12/15/2022 +0 days CVE reserved
12/15/2022 +0 days VulDB entry created
01/13/2023 +29 days VulDB last update


Advisory: 76
Status: Confirmed

CVE: CVE-2021-4245 (🔒)
scip Labs:


Created: 12/15/2022 10:39 AM
Updated: 01/13/2023 02:40 AM
Changes: 12/15/2022 10:39 AM (43), 01/13/2023 02:32 AM (2), 01/13/2023 02:40 AM (21)
Complete: 🔍


No comments yet. Languages: en.

Please log in to comment.

Do you need the next level of professionalism?

Upgrade your account now!