Bug 805551 - (CVE-2012-1572) CVE-2012-1572 openstack-keystone: extremely long passwords can crash Keystone
CVE-2012-1572 openstack-keystone: extremely long passwords can crash Keystone
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
All Linux
medium Severity medium
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Assigned To: Red Hat Product Security
: Security
Depends On: 807336 807340 807346
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Reported: 2012-03-21 11:02 EDT by Vincent Danen
Modified: 2016-11-08 11:00 EST (History)
6 users (show)

See Also:
Fixed In Version:
Doc Type: Bug Fix
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Last Closed: 2013-08-09 00:33:03 EDT
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RHEL 7.3 requirements from Atomic Host:
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Attachments (Terms of Use)
preliminary patch to fix the flaw (3.15 KB, patch)
2012-03-21 11:18 EDT, Vincent Danen
no flags Details | Diff

  None (edit)
Description Vincent Danen 2012-03-21 11:02:47 EDT
A vulnerability in how Keystone handles extremely long passwords was discovered.  When Keystone is validating a password, glibc allocated space on the stack for the entire password.  If the password is long enough, stack space can be exhausted which will lead to a crash.  A remote attacker could use this to cause a crash in Keystone by submitting a long password when attempting to log into an existing account; an attacker must know an existing account name to attempt the login with for this attack to be successful.
Comment 1 Vincent Danen 2012-03-21 11:12:41 EDT
This flaw is embargoed until 20120327.
Comment 2 Vincent Danen 2012-03-21 11:18:31 EDT
Created attachment 571739 [details]
preliminary patch to fix the flaw
Comment 3 Pádraig Brady 2012-03-27 11:08:03 EDT
Hi Vincent. Distro bugs have been created and block this one.
Corresponding updates have been pushed.
I can't make this public.
Can you please?


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