CVE-2017-8307

Public Exploit

Description

In Avast Antivirus before v17, using the LPC interface API exposed by the AvastSVC.exe Windows service, it is possible to launch predefined binaries, or replace or delete arbitrary files. This vulnerability is exploitable by any unprivileged user when Avast Self-Defense is disabled. It is also exploitable in conjunction with CVE-2017-8308 when Avast Self-Defense is enabled. The vulnerability allows for Denial of Service attacks and hiding traces of a possible attack.

9.8

CVSS

Severity: Critical

CVSS 3.0 •

CVSS 2.0 •

EPSS 0.99% Top 25%

Third-Party Advisory securityfocus.com Third-Party Advisory trustwave.com

Affected: n/a n/a

References

Link	Tags
http://www.securityfocus.com/bid/98086	third party advisory vdb entry
https://www.trustwave.com/Resources/Security-Advisories/Advisories/Multiple-Vulnerabilities-in-Avast-Antivirus/?fid=9201	third party advisory exploit technical description

Frequently Asked Questions

What is the severity of CVE-2017-8307?: CVE-2017-8307 has been scored as a critical severity vulnerability.
How to fix CVE-2017-8307?: To fix CVE-2017-8307, 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-2017-8307 being actively exploited in the wild?: It is possible that CVE-2017-8307 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.

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