CVE-2019-18894

Public Exploit

Description

In Avast Premium Security 19.8.2393, attackers can send a specially crafted request to the local web server run by Avast Antivirus on port 27275 to support Bank Mode functionality. A flaw in the processing of a command allows execution of arbitrary OS commands with the privileges of the currently logged in user. This allows for example attackers who compromised a browser extension to escape from the browser sandbox.

Category

7.8
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.32%
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-2019-18894?
CVE-2019-18894 has been scored as a high severity vulnerability.
How to fix CVE-2019-18894?
To fix CVE-2019-18894, 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-2019-18894 being actively exploited in the wild?
It is possible that CVE-2019-18894 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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