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.
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.005 (43.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 43rd percentile — 43.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
Weakness classification (CWE)
References
- www.mcerlane.co.uk/CVE-2019-11230/ (Exploit, Third Party Advisory)
- www.securityfocus.com/bid/109344 (Third Party Advisory, vdb-entry)
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.