Kaspersky password manager fixes that bruteforced

#Kaspersky password manager fixes that bruteforced generator#
#Kaspersky password manager fixes that bruteforced update#
#Kaspersky password manager fixes that bruteforced code#
#Kaspersky password manager fixes that bruteforced Pc#

In addition, on the KPM screen, an animation was adopted in which a large number of character strings flowed when the password was generated.

#Kaspersky password manager fixes that bruteforced Pc#

The fact that the system time of the PC was used as the seed value for pseudo-random number generation means that the password generated by KPM was the same if the system time was the same. Then, the seed value is set as the initial state, and if the seed value is the same, the same number is always generated for the pseudo-random number.

#Kaspersky password manager fixes that bruteforced generator#

Return generateRandomPassword (policy, mtrand) ДЄs the name implies, the pseudo-random number generator looks random at first glance, but it calculates the number with a certain algorithm. Seed = ft.dwLowDateTime + ft.dwHighDateTime ДЄuto mtrand = std :: bind (std :: uniform_real_distribution (0,1), mt19937 (seed)) std :: string pwlib :: generatePassword (pwdlib :: Policy policy, int seed) The seed is defined as the sum of the lower 32 bits (ft.dwLowDateTime) and the upper 32 bits (ft.dwHighDateTime) of the system time.

#Kaspersky password manager fixes that bruteforced code#

The code for the KPM password generation function is below. The most serious problem was that they used a pseudo-random number generator (PRNG) called the 'Mersenne Twister.' And we used the device's system time for that seed value. 'There are some problems with the password generator included in KPM,' said Ledger Donjon's research team. The character set used for the password is customizable and can be set from the password generation UI. KPM's password generation function creates a 12-character password by default from uppercase letters, lowercase letters, numbers, and special characters. In 2019, Ledger Donjon investigated the password generation features built into KPM. In this way, what is important in random generation is that 'characters are selected from a specified range with a uniform probability.' If the probabilities are biased, the password will inevitably be less secure.

It is said that a method similar to this is adopted for random generation of passwords in KeePass, a password manager developed in open source. Therefore, it is necessary to modify it so that it ignores the time when 31 and 32 appear in 'GetRandom32 ()'. Since the flow is to randomly select a number from 0 to 31 with 'GetRandom32 ()' and return the remainder after dividing by 10 to charset, the probability that 0 and 1 will be returned will be a little higher if this is left as it is. There are many ways to generate a password, but KPM combines randomly selected letters, numbers, and symbols to generate a password.ДЇor example, if you want to output characters from a set of 10 characters with a random number generation method called GetRandom32, you can write with the following code. Kaspersky Password Manager's random password generator was about as random as your wall clock Kaspersky Password Manager: All your passwords are belong to us | Donjon

#Kaspersky password manager fixes that bruteforced update#

A message prompting KPM users to update their password has already been sent, and it is said that the problem has already been fixed at the time of writing the article. Security research company Ledger Donjon had a problem with the program of password manager 'Kaspersky Password Manager (KPM) ' developed by security company Kaspersky, and the generated password was very vulnerable to brute force attacks. 21:00:00 The password generated by Kaspersky's password manager turned out to be able to break through the detonation velocity with a brute force attack, why?