Vulnerability Details : CVE-2019-11230
Potential exploit
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.
Products affected by CVE-2019-11230
- cpe:2.3:a:avast:antivirus:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2019-11230
0.11%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 27 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2019-11230
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
3.6
|
LOW | AV:L/AC:L/Au:N/C:N/I:P/A:P |
3.9
|
4.9
|
NIST | |
|
4.4
|
MEDIUM | CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N |
0.8
|
3.6
|
NIST |
CWE ids for CVE-2019-11230
-
The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource.Assigned by: nvd@nist.gov (Primary)
References for CVE-2019-11230
-
http://www.securityfocus.com/bid/109344
Avast! Antivirus CVE-2019-11230 Local Denial of Service VulnerabilityThird Party Advisory
-
http://www.mcerlane.co.uk/CVE-2019-11230/
CVE 2019 11230 – Conor McErlane – Bug Bounty HunterExploit;Third Party Advisory
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