Vulnerability in Avast Antivirus
CVE-2019-11230
In Avast Antivirus before 19.4, a local administrator can trick the product into renaming arbitrary files by replacing the Logs\Update.log file with a symlink. The next time the product attempts to write to the log file, the target of the symlink is renamed. This defect can be exploited to rename a critical product file (e.g., AvastSvc.exe), causing the product to fail to start on the next system restart.
EPSS: 0.005 (42.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 4.4 (Medium). Vector: CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N.
Affected products
- Avast Antivirus
- N/a — versions n/a
Weakness classification (CWE)
References
- cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC)
- cve@mitre.org (Third Party Advisory, vdb-entry, x_refsource_BID)
Frequently asked questions
- What is CVE-2019-11230?
- CVE-2019-11230 is a medium-severity vulnerability in Avast Antivirus, classified under Improper Link Resolution Before File Access. CVSS score: 4.4/10. Published 2019-07-18.
- How severe is CVE-2019-11230?
- Medium severity. CVSS v3 base score is 4.4 out of 10.