CVE-2017-5567

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.

CVSS v3.0 6.7 MEDIUM
CVSS v2.0 7.2 HIGH

6.7^/10

CVSS v3.0 : MEDIUM

Vector : AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Exploitability : 0.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required HIGH

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

7.2^/10

CVSS v2.0 : HIGH

Vector : AV:L/AC:L/Au:N/C:C/I:C/A:C

Exploitability : 3.9 / Impact : 10.0

Access Vector LOCAL

Access Complexity LOW

Authentication NONE

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

References

Link	Resource
http://cybellum.com/doubleagentzero-day-code-injection-and-persistence-technique/	Technical Description Third Party Advisory
http://cybellum.com/doubleagent-taking-full-control-antivirus/	Third Party Advisory
http://www.securityfocus.com/bid/97017	Third Party Advisory VDB Entry

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Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:avast:pro_antivirus::::::::
	cpe:2.3:a:avast:internet_security::::::::
	cpe:2.3:a:avast:free_antivirus::::::::
	cpe:2.3:a:avast:premier::::::::

Information

Published : 2017-03-21 09:59

Updated : 2019-10-02 17:03

NVD link : CVE-2017-5567

Mitre link : CVE-2017-5567

JSON object : View

CWE

CWE-427

Uncontrolled Search Path Element

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Products Affected

avast

premier
internet_security
pro_antivirus
free_antivirus

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