Vulnerability Details : CVE-2019-18893
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.
Vulnerability category: Cross site scripting (XSS)
Products affected by CVE-2019-18893
- cpe:2.3:a:avg:secure_browser:77.0.1790.77:*:*:*:*:*:*:*
- cpe:2.3:a:avast:secure_browser:77.1.1831.91:*:*:*:*:*:*:*
- cpe:2.3:a:video_downloader_project:video_downloader:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2019-18893
0.13%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 48 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2019-18893
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
4.3
|
MEDIUM | AV:N/AC:M/Au:N/C:N/I:P/A:N |
8.6
|
2.9
|
NIST | |
|
6.1
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
2.8
|
2.7
|
NIST |
CWE ids for CVE-2019-18893
-
The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.Assigned by: nvd@nist.gov (Primary)
References for CVE-2019-18893
-
https://palant.de/2020/01/13/pwning-avast-secure-browser-for-fun-and-profit/
Pwning Avast Secure Browser for fun and profitExploit;Third Party Advisory
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