Vulnerability Report

CVE-2021-27241

Title: Avast Premium Security

Other

Proof Of Concept

No public PoC currently indexed for CVE-2021-27241.

CWE Category CWE-59
Published Date Mar 29, 2021
Modified Date Nov 21, 2024
Exploit Status Not Found
Score 6.1 CVSS v3.1
Exploit Probability (EPSS)
0.26%

Vulnerability Summary

CVE-2021-27241: 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.

Impacted Vendors

T
trendmicro 1
A
avast 1

Reference Links

https://www.zerodayinitiative.com/advisories/ZDI-21-208/ https://www.zerodayinitiative.com/advisories/ZDI-21-208/
CVSS v3.1
Source Entity [email protected]
Severity MEDIUM
6.1
Attack Vector
LOCAL
Complexity
LOW
Privileges
N/A
Interaction
NONE
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
UNCHANGED
RAW VECTOR CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H
CVSS v3.0
Source Entity [email protected]
Severity MEDIUM
6.1
Attack Vector
LOCAL
Complexity
LOW
Privileges
N/A
Interaction
NONE
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
UNCHANGED
RAW VECTOR CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H
CVSS v2.0
Source Entity [email protected]
Severity LOW
3.6
Access Vector
N/A
Authentication
N/A
RAW VECTOR AV:L/AC:L/Au:N/C:N/I:P/A:P

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2021-27241 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

MODIFIED

Vulnerability data or affected products updated.

PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector LOCAL
Complexity LOW
Privileges N/A
Interaction NONE
CVSS Vector String CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H

Affected Stack

No specific products linked.