Multiple vulnerabilities in Avast Antivirus and AVG Antivirus



Published: 2022-05-05
Risk Low
Patch available YES
Number of vulnerabilities 2
CVE-ID CVE-2022-26522
CVE-2022-26523
CWE-ID CWE-264
Exploitation vector Local
Public exploit N/A
Vulnerable software
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Avast Antivirus
Client/Desktop applications / Antivirus software/Personal firewalls

AVG Antivirus
Client/Desktop applications / Antivirus software/Personal firewalls

Vendor

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU62828

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: CVE-2022-26522

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to application does not properly impose security restrictions in the "Anti Rootkit" driver within the kernel driver "aswArPot.sys" in aswArPot+0xc4a3, which leads to security restrictions bypass and privilege escalation.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Avast Antivirus: before 22.1

AVG Antivirus: before 22.1


CPE2.3 External links

http://www.sentinelone.com/labs/10-year-old-vulnerabilities-in-avast-and-avg-put-millions-at-risk/

Q & A

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.

2) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU62829

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: CVE-2022-26523

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to application does not properly impose security restrictions in the "Anti Rootkit" driver in aswArPot+0xc4a3, which leads to security restrictions bypass and privilege escalation.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Avast Antivirus: before 22.1

AVG Antivirus: before 22.1


CPE2.3 External links

http://www.sentinelone.com/labs/10-year-old-vulnerabilities-in-avast-and-avg-put-millions-at-risk/

Q & A

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.



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