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Tasklist

FS#45575 - [krb5] CVE-2015-2694: PKINIT requires_preauth bypass leading to possible ciphertext reconstruction

Attached to Project: Arch Linux
Opened by Levente Polyak (anthraxx) - Monday, 06 July 2015, 22:28 GMT
Last edited by Bartłomiej Piotrowski (Barthalion) - Sunday, 12 July 2015, 17:19 GMT
Task Type Bug Report
Category Security
Status Closed
Assigned To Eric Belanger (Snowman)
Architecture All
Severity High
Priority Normal
Reported Version
Due in Version Undecided
Due Date Undecided
Percent Complete 100%
Votes 0
Private No

Details

Description:
It has been reported [0][1] that krb5 before version 1.13.2 is vulnerable to an issues in OTP and PKINIT kdcpreauth modules leading to requires_preauth bypass.
This issue can be used to obtain user password by performing a dictionary-attack on the retrieved ciphertext.

Mitigation:
Upgrade to 1.13.2 (this also fixes a minor severity issue CVE-2014-5355)

[0]: http://krbdev.mit.edu/rt/NoAuth/krb5-1.13/fixed-1.13.2.html
[1]: http://krbdev.mit.edu/rt/Ticket/Display.html?id=8160
This task depends upon

Closed by  BartÅ‚omiej Piotrowski (Barthalion)
Sunday, 12 July 2015, 17:19 GMT
Reason for closing:  Fixed
Additional comments about closing:  krb5 1.13.2-1

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