CVE-2017-8307

moderate-risk
Published 2017-04-27

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.

Do I need to act?

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0.99% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
9
CVSS 9.8/10 Critical
NETWORK / LOW complexity

Affected Products (1)

Affected Vendors

Avast

References (4)

Third Party Advisory http://www.securityfocus.com/bid/98086
Exploit https://www.trustwave.com/Resources/Security-Advisories/Advisories/Multiple-Vuln...
Third Party Advisory http://www.securityfocus.com/bid/98086
Exploit https://www.trustwave.com/Resources/Security-Advisories/Advisories/Multiple-Vuln...
40
/ 100
moderate-risk
Severity 32/34 · Critical
Exploitability 3/34 · Minimal
Exposure 5/34 · Minimal