Podatność CVE-2017-5567


Publikacja: 2017-03-21

Opis:
Code injection vulnerability in Avast Premier 12.3 (and earlier), Internet Security 12.3 (and earlier), Pro Antivirus 12.3 (and earlier), and Free Antivirus 12.3 (and earlier) allows a local attacker to bypass a self-protection mechanism, inject arbitrary code, and take full control of any Avast process via a "DoubleAgent" attack. One perspective on this issue is that (1) these products do not use the Protected Processes feature, and therefore an attacker can enter an arbitrary Application Verifier Provider DLL under Image File Execution Options in the registry; (2) the self-protection mechanism is intended to block all local processes (regardless of privileges) from modifying Image File Execution Options for these products; and (3) this mechanism can be bypassed by an attacker who temporarily renames Image File Execution Options during the attack.

Typ:

CWE-427

(Uncontrolled Search Path Element)

CVSS2 => (AV:L/AC:L/Au:N/C:C/I:C/A:C)

Ogólna skala CVSS
Znaczenie
Łatwość wykorzystania
7.2/10
10/10
3.9/10
Wymagany dostęp
Złożoność ataku
Autoryzacja
Lokalny
Niska
Nie wymagana
Wpływ na poufność
Wpływ na integralność
Wpływ na dostępność
Pełny
Pełny
Pełny
Affected software
Avast -> Pro antivirus 
Avast -> Premier 
Avast -> Free antivirus 
Avast -> Internet security 

 Referencje:
http://cybellum.com/doubleagent-taking-full-control-antivirus/
http://cybellum.com/doubleagentzero-day-code-injection-and-persistence-technique/
http://www.securityfocus.com/bid/97017

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