8.8
HIGH
CVE-2021-20089
Adobe purl Prototype Pollution Vulnerability
Description

Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') in purl 2.3.2 allows a malicious user to inject properties into Object.prototype.

INFO

Published Date :

April 23, 2021, 7:15 p.m.

Last Modified :

Aug. 8, 2023, 2:22 p.m.

Remotely Exploitable :

Yes !

Impact Score :

5.9

Exploitability Score :

2.8
Public PoC/Exploit Available at Github

CVE-2021-20089 has a 4 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

Affected Products

The following products are affected by CVE-2021-20089 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Purl_project purl
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2021-20089.

URL Resource
https://github.com/BlackFan/client-side-prototype-pollution/blob/master/pp/purl.md Exploit Third Party Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

None

Updated: 1 month ago
0 stars 2 fork 2 watcher
Born at : Aug. 17, 2024, 7:42 p.m. This repo has been linked 7 different CVEs too.

CSPP - Prototype Pollution and useful Scripts for CTF-BBP

Updated: 3 months, 1 week ago
1 stars 0 fork 0 watcher
Born at : June 12, 2024, 11:56 a.m. This repo has been linked 7 different CVEs too.

None

Updated: 2 years, 5 months ago
1 stars 1 fork 1 watcher
Born at : March 10, 2022, 12:06 p.m. This repo has been linked 7 different CVEs too.

Prototype Pollution and useful Script Gadgets

Updated: 2 weeks ago
1368 stars 188 fork 188 watcher
Born at : Sept. 29, 2020, 12:52 p.m. This repo has been linked 7 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2021-20089 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2021-20089 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • Reanalysis by [email protected]

    May. 04, 2021

    Action Type Old Value New Value
    Removed CVSS V2 NIST (AV:N/AC:L/Au:N/C:P/I:P/A:P)
    Added CVSS V2 NIST (AV:N/AC:L/Au:S/C:P/I:P/A:P)
    Removed CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    Added CVSS V3.1 NIST AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  • Initial Analysis by [email protected]

    May. 01, 2021

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:P/I:P/A:P)
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    Changed Reference Type https://github.com/BlackFan/client-side-prototype-pollution/blob/master/pp/purl.md No Types Assigned https://github.com/BlackFan/client-side-prototype-pollution/blob/master/pp/purl.md Exploit, Third Party Advisory
    Added CWE NIST NVD-CWE-Other
    Added CPE Configuration OR *cpe:2.3:a:purl_project:purl:2.3.2:*:*:*:*:*:*:*
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2021-20089 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.11 }} 0.01%

score

0.44579

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability