CVE-2021-27241
Published Mar 29, 2021
Last updated 4 years ago
Overview
- Description
- This vulnerability allows local attackers to delete arbitrary directories on affected installations of Avast Premium Security 20.8.2429 (Build 20.8.5653.561). 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. Was ZDI-CAN-12082.
- Source
- zdi-disclosures@trendmicro.com
- NVD status
- Analyzed
Social media
- Hype score
- Not currently trending
Risk scores
CVSS 3.1
- Type
- Primary
- Base score
- 6.1
- Impact score
- 4.2
- Exploitability score
- 1.8
- Vector string
- CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H
- Severity
- MEDIUM
CVSS 3.0
- Type
- Secondary
- Base score
- 6.1
- Impact score
- 4.2
- Exploitability score
- 1.8
- Vector string
- CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H
- Severity
- MEDIUM
CVSS 2.0
- Type
- Primary
- Base score
- 3.6
- Impact score
- 4.9
- Exploitability score
- 3.9
- Vector string
- AV:L/AC:L/Au:N/C:N/I:P/A:P
Weaknesses
- zdi-disclosures@trendmicro.com
- CWE-59
Configurations
[
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:avast:premium_security:20.8.2429:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "2686D810-4654-4FF3-A785-A2B43139967E"
}
],
"operator": "OR"
}
]
}
]