Vulnerability identifier: #VU95567
Vulnerability risk: Low
CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-59
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 user to escalate privileges on the system.
The vulnerability exists dye to incorrect handling of symbolic links within the Avast Service (AvastSvc). A local user can create a symbolic link to a critical folder on the system and delete it, which can result in privilege escalation.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
Avast Antivirus: 1 - 2016.11.1.2262
External links
http://www.zerodayinitiative.com/advisories/ZDI-24-1005/
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.