![]() Kaspersky published a security advisory about the issue on Apand, after waiting a few months for users to update the Kaspersky Password Manager, Bédrune published his report. If the time of account creation is known, there would only be around 100 possible passwords. ![]() He also explained that sites often show the time that an account is created and, if the time is known, brute forcing passwords would be even easier. Brute forcing them takes a few minutes,” said Bédrune. “There are 315,619,200 seconds between 20, so KPM could generate at most 315,619,200 passwords for a given charset. ![]() The problem with this approach is a password generated anywhere in the world by a user of the Kaspersky Password Manager would be the same as the password of all other users who generated a password that same second. Kaspersky used the current time to the second as the seed in a Mersenne Twister pseudorandom number generator. The main issue with the suggested passwords is the single source of entropy used. While this is a good idea, it does mean that if it can be determined that an individual is using Kaspersky Password Manager, it would be possible to deduce the bias and crack passwords more quickly. When an attempt is made to crack a password, it would likely take much longer due to these atypical letter combinations. ![]() To make it harder to guess the randomly generated passwords, Kaspersky made certainly commonly used letters appear less frequently and less frequently used letters appear more often, as well as increasing infrequently used letter combinations. Kaspersky used a complex process to generate passwords, which was intended to make it difficult for hackers to guess passwords however, the method used actually made it easier. Jean-Baptiste Bédrune of the French cybersecurity firm Ledger Donjon has published a technical write-up about several security flaws he discovered in the Kaspersky Password Manager, with one of the most serious in the pseudo random number generator used by the solution. The reason for the update and alert is now clear. Password managers are a vital line of defense in the battle for internet security - which makes it all the more painful when they shit the bed. The problem was resolved by Kaspersky in October 2019 with a Kaspersky Password Manager update and users were sent an alert telling them that they should regenerate their passwords. The Kaspersky Password Manager (Opens in a new tab) (KPM), a free tool used to generate and manage online passwords, has long been a popular alternative to the likes of LastPass or 1Password. Unfortunately for users of the Kaspersky Password Manager, that feature was making it very easy for hackers to brute force those passwords.
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