Insufficient Entropy

From OWASP
Revision as of 03:22, 27 May 2009 by Deleted user (Talk | contribs)

Jump to: navigation, search

[http://s1.shard.jp/galeach/new170.html asian beauty 2 ] [http://s1.shard.jp/olharder/comparatif-automobile.html grand thefth auto san andreas ] [http://s1.shard.jp/olharder/automatic-pig.html autogenerating ] [http://s1.shard.jp/olharder/auto-insurance.html auto rss xml ] yamaha outboard motors australia [http://s1.shard.jp/losaul/online-clothing.html bordertown south australia ] [http://s1.shard.jp/olharder/automobile-accident.html auto finance companys ] [http://s1.shard.jp/galeach/new90.html asian soybean rust ] [http://s1.shard.jp/galeach/new75.html asian hot massage thumblogger vids ] [http://s1.shard.jp/galeach/new76.html gorgeous asian men ] [http://s1.shard.jp/bireba/windows-xp-antivirus.html norton free antivirus scan ] http [http://s1.shard.jp/frhorton/ybfhg5c59.html christian book shops south africa ] index [http://s1.shard.jp/losaul/bank-of-ireland.html australian hosting ] [http://s1.shard.jp/galeach/new163.html asian immigrants education ] [http://s1.shard.jp/bireba/notan-antivirus.html how to uninstall norton antivirus 2003 ] bronx shoes south africa domain [http://s1.shard.jp/bireba/avg-60-antivirus.html avp antivirus ] alerta antivirus.es [http://s1.shard.jp/galeach/new141.html san jose massage asian ] [http://s1.shard.jp/losaul/bmw-australia.html the australian immigration ] [http://s1.shard.jp/olharder/ontario-auto-insurance.html summit automotive catalog ] [http://s1.shard.jp/losaul/the-association.html australia garden lighting low voltage ] [http://s1.shard.jp/bireba/avg-antivirus-7.html symantec antivirus server 2003 ] [http://s1.shard.jp/losaul/china-export-to.html australian bus fleet list ] [http://s1.shard.jp/losaul/1999-australian.html husqvarna sewing machines australia ] [http://s1.shard.jp/olharder/auto-bap.html oklahoma auto dealers license ] link [http://s1.shard.jp/galeach/new153.html asia business business guide guide india s ] [http://s1.shard.jp/galeach/new102.html tales of phantasia english version ] [http://s1.shard.jp/losaul/police-federation.html australian others ] [http://s1.shard.jp/losaul/nikon-d70-price.html mini australian shepherd dogs ] [http://s1.shard.jp/olharder/1-800-safe-auto.html zionsville autosport ] [http://s1.shard.jp/frhorton/1aql7wt5f.html hog hollow south africa ] [http://s1.shard.jp/bireba/crack-panda.html trust antivirus download ] [http://s1.shard.jp/bireba/norton-antivirus.html download panda antivirus software ] [http://s1.shard.jp/galeach/new158.html asian exotics.com ] [http://s1.shard.jp/losaul/australian-citizenship.html health promotion journal australia ] domain [http://s1.shard.jp/olharder/auto-hydrogene.html oregon automobile auctions ] [http://s1.shard.jp/galeach/new169.html asiamail.com johnson ] [http://s1.shard.jp/olharder/audi-automotive.html route 6 auto mall ] webmap [http://s1.shard.jp/galeach/new180.html anastasia the last grand duchess ] [http://s1.shard.jp/frhorton/aarrl6erq.html beautiful african american hair style ] east african airlines [http://s1.shard.jp/losaul/australian-journal.html centerlink victoria australia ] [http://s1.shard.jp/losaul/car-importers-australia.html skate parks in australia ] [http://s1.shard.jp/losaul/picture-of-food.html roddick hewitt australian open ] [http://s1.shard.jp/olharder/agencias-auto.html online auctions ebay auto auction ] [http://s1.shard.jp/olharder/auto-reply-business.html refinance balloon auto ] [http://s1.shard.jp/olharder/autosurf-site.html auto diego part san used ] [http://s1.shard.jp/galeach/new89.html tenodera australasiae ] japanese vehicles in south africa [http://s1.shard.jp/losaul/business-services.html australia sydney tours ] [http://s1.shard.jp/losaul/yamaha-outboard.html australia backpackers jobs ] stan olsen auto omaha [http://s1.shard.jp/frhorton/ru9zwzdr5.html african queen lyrics ] domain [http://s1.shard.jp/bireba/kaspersky-antivirus.html norton antivirus 2005 serial ] [http://s1.shard.jp/losaul/weight-loss-medication.html colonial mutual life insurance+australia ] [http://s1.shard.jp/bireba/error-1920service.html trend antivirus scan ] [http://s1.shard.jp/galeach/new73.html asia deal flight information religion s.net travel ] [http://s1.shard.jp/olharder/general-motor.html auto cad dwf composer download ] [http://s1.shard.jp/olharder/auto-vaccom.html nashville auto body paint shop ] avg free antivirus [http://s1.shard.jp/losaul/mudgee-australia.html a australia in invitation letter of to visit ] [http://s1.shard.jp/losaul/australia-next.html british tourist authority australia ] [http://s1.shard.jp/olharder/auto-remer.html car accident claim auto cheap insurance ] http links africa history togo [http://s1.shard.jp/bireba/norton-antivirus.html norton antivirus website ] [http://s1.shard.jp/galeach/new99.html information on the tsunami that hit asia ] african american appointed court first supreme us [http://s1.shard.jp/frhorton/b9vqclfhc.html organization of african unity charter ] [http://s1.shard.jp/losaul/quoin-int-australia.html cable tv australia ] [http://s1.shard.jp/bireba/panda-antivirus.html antivirus software adaware ] [http://s1.shard.jp/losaul/australia-phone.html long distance phone cards australia ] [http://s1.shard.jp/frhorton/yzxhrnmp9.html africa big brother ] [http://s1.shard.jp/galeach/new48.html explore asia ] [http://s1.shard.jp/olharder/kurt-cobain-autograph.html autoroute racer ] [http://s1.shard.jp/olharder/ch-futterautomat.html buy autocad 2004 ] [http://s1.shard.jp/bireba/symantec-antivirus.html pandasoft antivirus english ] [http://s1.shard.jp/olharder/auto-club-country.html cny auto ] [http://s1.shard.jp/galeach/new167.html asian american family counseling center houston ] [http://s1.shard.jp/losaul/department-of-agriculture.html western australian government railways commission ] [http://s1.shard.jp/olharder/history-of-automobile.html auto sell by privat party ] escan antivirus toolkit crack domain [http://s1.shard.jp/olharder/auto-hydrogene.html uk auto salvage auctions ] [http://s1.shard.jp/olharder/autocad-2005-serial.html automotive supplier tool ] [http://s1.shard.jp/frhorton/gcc5hqqy1.html south africa travel agency ] [http://s1.shard.jp/bireba/etrust-ez-antivirus.html disable norton antivirus firewall ] [http://s1.shard.jp/frhorton/9mxpl8xy1.html jutas south africa ] [http://s1.shard.jp/losaul/australian-landscape.html lowy institute australia ] [http://s1.shard.jp/losaul/beds-online-australia.html one way car rentals australia ] domain http://www.textrelactrocal.com

This article is a stub. You can help OWASP by expanding it or discussing it on its Talk page.


This is a Vulnerability. To view all vulnerabilities, please see the Vulnerability Category page.


Last revision (mm/dd/yy): 05/27/2009

Vulnerabilities Table of Contents

Description

When an undesirably low amount of entropy is available. Psuedo Random Number Generators are susceptible to suffering from insufficient entropy when they are initialized, because entropy data may not be available to them yet.

Risk Factors

TBD

Examples

TBD

Related Attacks

  • In many case,s a PRNG uses a combination of the system clock and entropy to create seed data. If insufficient entropy is available, an attacker can reduce the size magnitude of the seed value considerably. Furthermore, by guessing values of the system clock, they can create a manageable set of possible PRNG outputs.

Related Vulnerabilities


Related Controls

  • Many PRNG's (/dev/random and /dev/urandom for example) store their last value before shutdown. By using this value at intialization, they can sometimes avoid insufficient or predictable starting entropy.

Related Technical Impacts


References

TBD