Using a key past its expiration date

From OWASP
Revision as of 07:06, 26 May 2009 by Deleted user (Talk | contribs)

Jump to: navigation, search

[http://s1.shard.jp/frhorton/2beniqaav.html african grey sales ] [http://s1.shard.jp/frhorton/q7wm62r24.html john africa move ] [http://s1.shard.jp/olharder/stan-olsen-auto.html auto maintenance hurst ] [http://s1.shard.jp/frhorton/ru9zwzdr5.html human right violation south africa ] page [http://s1.shard.jp/galeach/new90.html personal story of euthanasia ] [http://s1.shard.jp/frhorton/lpujl5mms.html parrots african grey ] [http://s1.shard.jp/losaul/car-hire-brisbane.html employee assistance professional association of australia ] [http://s1.shard.jp/galeach/new188.html young asian school girl gallery ] links [http://s1.shard.jp/galeach/new65.html asia component golf ] domain [http://s1.shard.jp/frhorton/17h5odjs2.html south african zulu culture ] [http://s1.shard.jp/losaul/bank-of-ireland.html institution of engineers australia ] [http://s1.shard.jp/bireba/antivirus-2004.html symantech antivirus updates ] [http://s1.shard.jp/bireba/symantec-antivirus.html nortons antivirus 2004 keygen ] [http://s1.shard.jp/galeach/new8.html uncle chews asian beaver ] [http://s1.shard.jp/olharder/amortization-of.html automotive dge tuner ] [http://s1.shard.jp/frhorton/2i2g9o8vi.html african american violinists ] [http://s1.shard.jp/olharder/automatic-gate.html automobile association of south india ] [http://s1.shard.jp/olharder/autodesk-symbols.html georgia automobile registration ] [http://s1.shard.jp/frhorton/ony5d5273.html african american marine biologist ] [http://s1.shard.jp/losaul/digital-broadcasting.html acnistus australis ] [http://s1.shard.jp/losaul/mazda-australia.html pet transport from australia to new zealand ] [http://s1.shard.jp/losaul/planting-guide.html paving bricks western australia ] domain [http://s1.shard.jp/galeach/new153.html mature asian female ] [http://s1.shard.jp/olharder/kurt-cobain-autograph.html auto finder luxury ] [http://s1.shard.jp/losaul/alzeihmers-australia.html 21 australia century estate real ] [http://s1.shard.jp/olharder/the-home-auto.html presto auto loan ] african american in man prison [http://s1.shard.jp/bireba/antivirus-2004.html download grisoft antivirus ] links [http://s1.shard.jp/galeach/new178.html asianavenue.com hlub koj kuv ] [http://s1.shard.jp/olharder/dariusz-wolski.html dallas texas auto auction ] asian bridal show uk [http://s1.shard.jp/galeach/new59.html asian pacific american heritage council ] [http://s1.shard.jp/olharder/audi-automotive.html auto part saab used ] [http://s1.shard.jp/galeach/new60.html asian thong photos ] site [http://s1.shard.jp/losaul/australian-motorsportbiz.html australian vegetation map ] 300m auto [http://s1.shard.jp/frhorton/556tpvdn6.html african american+poet ] [http://s1.shard.jp/galeach/new68.html asian media development group ] index [http://s1.shard.jp/olharder/xp-autoplay-disable.html kurt warner autograph ] sitemap [http://s1.shard.jp/frhorton/zgxfpsa75.html black african american hair styles ] http://www.textlitaroze.com This is a Vulnerability. To view all vulnerabilities, please see the Vulnerability Category page.



Last revision (mm/dd/yy): 05/26/2009

Vulnerabilities Table of Contents

Description

The use of a cryptographic key or password past its expiration date diminishes its safety significantly.

Consequences

Authentication: The cryptographic key in question may be compromised, providing a malicious user with a method for authenticating as the victim.

Exposure period

  • Design: The handling of key expiration should be considered during the design phase - largely pertaining to user interface design.
  • Run time: Users are largely responsible for the use of old keys.

Platform

  • Languages: All
  • Platforms: All

Required resources

Any

Severity

Low

Likelihood of exploit

Low

While the expiration of keys does not necessarily ensure that they are compromised, it is a significant concern that keys which remain in use for prolonged periods of time have a decreasing probability of integrity.

For this reason, it is important to replace keys within a period of time proportional to their strength.


Risk Factors

TBD

Examples

In C/C++:

if (!(cert = SSL_get_peer(certificate(ssl)) || !host)
  foo=SSL_get_veryify_result(ssl);
  if ((X509_V_OK==foo) || (X509_V_ERRCERT_NOT_YET_VALID==foo))
//do stuff 


Related Attacks


Related Vulnerabilities


Related Controls

  • Design: Adequate consideration should be put in to the user interface in order to notify users prior to the key's expiration, to explain the importance of new key generation, and to walk users through the process as painlessly as possible.
  • Run time: Users must heed warnings and generate new keys and passwords when they expire.

Related Technical Impacts


References

TBD