High severity · published Oct 23, 2019
CVE-2019-17093
An issue was discovered in Avast antivirus before 19.8 and AVG antivirus before 19.8
7.8
CVSS
0.6%
EPSS
No
On KEV
Description
An issue was discovered in Avast antivirus before 19.8 and AVG antivirus before 19.8. A DLL Preloading vulnerability allows an attacker to implant %WINDIR%\system32\wbemcomn.dll, which is loaded into a protected-light process (PPL) and might bypass some of the self-defense mechanisms. This affects all components that use WMI, e.g., AVGSvc.exe 19.6.4546.0 and TuneupSmartScan.dll 19.1.884.0.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 46% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AN
Anti-virus · Avg
before 19.8 · source: NVD
AN
Antivirus · Avast
before 19.8 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-17093
CVE.org
https://www.cve.org/CVERecord?id=CVE-2019-17093
Exploit
https://safebreach.com/Post/Avast-Antivirus-AVG-Antivirus-DLL-Preloading-into-PPL-and-Potential-Abuses
Third Party Advisory
https://safebreach.com/blog
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