ZDI-CAN-12082: Avast Premium Security AvastSvc Directory Junction Denial-of-Service Vulnerability
This vulnerability allows local attackers to delete arbitrary directories on affected installations of Avast Premium Security. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The specific flaw exists within the AvastSvc.exe module. By creating a directory junction, an attacker can abuse the service to delete a directory. An attacker can leverage this vulnerability to create a denial-of-service condition on the system.
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Avast Premium Security |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
Frequently Asked Questions
What is the severity of ZDI-CAN-12082?
The severity of ZDI-CAN-12082 is classified as high due to the potential impact of arbitrary directory deletion.
How do I fix ZDI-CAN-12082?
To fix ZDI-CAN-12082, ensure that you are running the latest version of Avast Premium Security, which includes security patches.
Who is affected by ZDI-CAN-12082?
Local attackers with low-privileged code execution capabilities on systems running Avast Premium Security are affected by ZDI-CAN-12082.
What can an attacker do with ZDI-CAN-12082?
An attacker can exploit ZDI-CAN-12082 to delete arbitrary directories on systems using affected versions of Avast Premium Security.
How was ZDI-CAN-12082 discovered?
ZDI-CAN-12082 was discovered as part of ongoing security assessments of Avast Premium Security by the Zero Day Initiative.
- agent/softwarecombine
- collector/zdi-advisory
- source/ZDI
- alias/ZDI-21-208
- alias/ZDI-CAN-12082
- alias/CVE-2021-27241
- agent/software-canonical-lookup
- agent/severity
- agent/title
- agent/references
- agent/type
- agent/description
- agent/event
- agent/tags
- agent/source
- vendor/avast
- canonical/avast premium security