CVE-2019-18894

CVSS V2 High 9.3 CVSS V3 High 7.8
Description
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.
Overview
  • CVE ID
  • CVE-2019-18894
  • Assigner
  • cve@mitre.org
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2020-01-13T17:15:11
  • Last Modified Date
  • 2020-01-21T20:30:39
Weakness Enumerations
CWE URL
CWE-78 http://cwe.mitre.org/data/definitions/78.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:a:avast:premium_security:19.8.2393:*:*:*:*:*:*:* 1 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:M/Au:N/C:C/I:C/A:C
  • Access Vector
  • NETWORK
  • Access Compatibility
  • MEDIUM
  • Authentication
  • NONE
  • Confidentiality Impact
  • COMPLETE
  • Integrity Impact
  • COMPLETE
  • Availability Impact
  • COMPLETE
  • Base Score
  • 9.3
  • Severity
  • HIGH
  • Exploitability Score
  • 8.6
  • Impact Score
  • 10
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
  • Attack Vector
  • LOCAL
  • Attack Compatibility
  • LOW
  • Privileges Required
  • NONE
  • User Interaction
  • REQUIRED
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • HIGH
  • Availability Impact
  • HIGH
  • Base Score
  • 7.8
  • Base Severity
  • HIGH
  • Exploitability Score
  • 1.8
  • Impact Score
  • 5.9
References
Reference URL Reference Tags
https://palant.de/2020/01/13/pwning-avast-secure-browser-for-fun-and-profit/ Exploit Third Party Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2019-18894
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-18894
History
Created Old Value New Value Data Type Notes
2022-05-10 16:52:52 Added to TrackCVE
2022-12-04 09:19:35 2020-01-13T17:15Z 2020-01-13T17:15:11 CVE Published Date updated
2022-12-04 09:19:35 2020-01-21T20:30:39 CVE Modified Date updated
2022-12-04 09:19:35 Analyzed Vulnerability Status updated