| |
Vulnerability CVE-2019-3973
Published: 2019-07-17
Description: |
Comodo Antivirus versions 11.0.0.6582 and below are vulnerable to Denial of Service affecting CmdGuard.sys via its filter port "cmdServicePort". A low privileged process can crash CmdVirth.exe to decrease the port's connection count followed by process hollowing a CmdVirth.exe instance with malicious code to obtain a handle to "cmdServicePort". Once this occurs, a specially crafted message can be sent to "cmdServicePort" using "FilterSendMessage" API. This can trigger an out-of-bounds write if lpOutBuffer parameter in FilterSendMessage API is near the end of specified buffer bounds. The crash occurs when the driver performs a memset operation which uses a size beyond the size of buffer specified, causing kernel crash. |
Type:
CWE-787
CVSS2 => (AV:L/AC:L/Au:N/C:N/I:N/A:C)
CVSS Base Score |
Impact Subscore |
Exploitability Subscore |
4.9/10 |
6.9/10 |
3.9/10 |
Exploit range |
Attack complexity |
Authentication |
Local |
Low |
No required |
Confidentiality impact |
Integrity impact |
Availability impact |
None |
None |
Complete |
References: |
https://www.tenable.com/security/research/tra-2019-34
|
|
|
closedb();
?>
Copyright 2024, cxsecurity.com
|
|
|