Vulnerability identifier: #VU26542
Vulnerability risk: Medium
CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-20
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
Avast Antivirus
Client/Desktop applications /
Antivirus software/Personal firewalls
Vendor: Avast Software s.r.o.
Description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of user-supplied input in the aswTask RPC endpoint for the TaskEx library in the Avast Service (AvastSvc.exe). A remote attacker can trigger a reboot via RPC from a Low Integrity process.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
Avast Antivirus: 19.8.2393
External links
http://forum.avast.com/index.php?topic=232420.0
http://forum.avast.com/index.php?topic=232423.0
http://github.com/umarfarook882/Avast_Multiple_Vulnerability_Disclosure/blob/master/README.md
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.