CVE-2019-18893

Public Exploit

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.

Category

6.1
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.33%
Third-Party Advisory palant.de
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://palant.de/2020/01/13/pwning-avast-secure-browser-for-fun-and-profit/ third party advisory exploit

Frequently Asked Questions

What is the severity of CVE-2019-18893?
CVE-2019-18893 has been scored as a medium severity vulnerability.
How to fix CVE-2019-18893?
To fix CVE-2019-18893, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2019-18893 being actively exploited in the wild?
It is possible that CVE-2019-18893 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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