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.

CVSS v3.1

6.1 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CVSS v2.0

4.3 MEDIUMAV:N/AC:M/Au:N/C:N/I:P/A:N

EPSS

1.77% chance of exploitation in the next 30 days, 77th percentile

Published

2020-01-13

Updated

2024-08-05

Proof-of-concept exploits (1)

• https://palant.de/2020/01/13/pwning-avast-secure-browser-for-fun-and-profit/

References

• CVE Record
• NVD entry

Related

• CVE-2019-18890
• CVE-2019-18894
• CVE-2019-18889
• CVE-2019-18895
• CVE-2019-18885
• CVE-2019-18898