| CVE-2019-18894 | Date: (C)2020-01-14 (M)2023-12-22 |
In Avast Premium Security 19.8.2393, attackers can send a specially crafted request to the local web server run by Avast Antivirus on port 27275 to support Bank Mode functionality. A flaw in the processing of a command allows execution of arbitrary OS commands with the privileges of the currently logged in user. This allows for example attackers who compromised a browser extension to escape from the browser sandbox.
CVSS Score and Metrics +CVSS Score and Metrics -| CVSS V3 Severity: | CVSS V2 Severity: |
| CVSS Score : 7.8 | CVSS Score : 9.3 |
| Exploit Score: 1.8 | Exploit Score: 8.6 |
| Impact Score: 5.9 | Impact Score: 10.0 |
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| CVSS V3 Metrics: | CVSS V2 Metrics: |
| Attack Vector: LOCAL | Access Vector: NETWORK |
| Attack Complexity: LOW | Access Complexity: MEDIUM |
| Privileges Required: NONE | Authentication: NONE |
| User Interaction: REQUIRED | Confidentiality: COMPLETE |
| Scope: UNCHANGED | Integrity: COMPLETE |
| Confidentiality: HIGH | Availability: COMPLETE |
| Integrity: HIGH | |
| Availability: HIGH | |
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