Vulnerability identifier: #VU26540
Vulnerability risk: Low
CVSSv3.1: 7.3 [CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-264
Exploitation vector: Local
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 local attacker to escalate privileges on the system.
The vulnerability exists due to improper permission checks in the aswTask RPC endpoint for the TaskEx library in the Avast Service (AvastSvc.exe). A local attacker can gain elevated privileges via RPC on the target system.
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?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.