6.1
MEDIUM
CVE-2019-18893
Avast Secure Browser & AVG Secure Browser Cross-Site Scripting
Description

XSS in the Video Downloader component before 1.5 of Avast Secure Browser 77.1.1831.91 and AVG Secure Browser 77.0.1790.77 allows websites to execute their code in the context of this component. While Video Downloader is technically a browser extension, it is granted a very wide set of privileges and can for example access cookies and browsing history, spy on the user while they are surfing the web, and alter their surfing experience in almost arbitrary ways.

INFO

Published Date :

Jan. 13, 2020, 5:15 p.m.

Last Modified :

Nov. 21, 2024, 4:33 a.m.

Remotely Exploitable :

Yes !

Impact Score :

2.7

Exploitability Score :

2.8
Affected Products

The following products are affected by CVE-2019-18893 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 Avast secure_browser
1 Avg secure_browser
1 Video_downloader_project video_downloader
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-2019-18893.

URL Resource
https://palant.de/2020/01/13/pwning-avast-secure-browser-for-fun-and-profit/ Exploit Third Party Advisory
https://palant.de/2020/01/13/pwning-avast-secure-browser-for-fun-and-profit/ 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).

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

The following list is the news that have been mention CVE-2019-18893 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2019-18893 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 af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference https://palant.de/2020/01/13/pwning-avast-secure-browser-for-fun-and-profit/
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • Initial Analysis by [email protected]

    Jan. 22, 2020

    Action Type Old Value New Value
    Added CVSS V2 Metadata Victim must voluntarily interact with attack mechanism
    Added CVSS V2 NIST (AV:N/AC:M/Au:N/C:N/I:P/A:N)
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
    Changed Reference Type https://palant.de/2020/01/13/pwning-avast-secure-browser-for-fun-and-profit/ No Types Assigned https://palant.de/2020/01/13/pwning-avast-secure-browser-for-fun-and-profit/ Exploit, Third Party Advisory
    Added CWE NIST CWE-79
    Added CPE Configuration OR *cpe:2.3:a:avast:secure_browser:77.1.1831.91:*:*:*:*:*:*:* *cpe:2.3:a:avg:secure_browser:77.0.1790.77:*:*:*:*:*:*:* *cpe:2.3:a:video_downloader_project:video_downloader:*:*:*:*:*:*:*:* versions up to (excluding) 1.5
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-2019-18893 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2019-18893 weaknesses.

Exploit Prediction

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

0.13 }} 0.04%

score

0.48464

percentile

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