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Category:   OS (UNIX)  >   FreeBSD Kernel Vendors:   FreeBSD
FreeBSD crypt(3) Hash Generation Error May Generate Incorrect Hashes
SecurityTracker Alert ID:  1026995
SecurityTracker URL:  http://securitytracker.com/id/1026995
CVE Reference:   CVE-2012-2143   (Links to External Site)
Updated:  May 30 2012
Original Entry Date:  Apr 30 2012
Impact:   Modification of authentication information, Modification of system information
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 7.4, 8.1, 8.2, 8.3, 9.0
Description:   A vulnerability was reported in FreeBSD. The system may generate incorrect hashes.

When the crypt(3) system call is hashing data that contains a character with only the most significant bit set (0x80), that character and all subsequent characters are ignored.

Impact:   The system may generate incorrect hashes.
Solution:   The vendor has issued a fix.

The vendor's advisory is available at:

http://security.FreeBSD.org/advisories/FreeBSD-SA-12:02.crypt.asc

Vendor URL:  security.FreeBSD.org/advisories/FreeBSD-SA-12:02.crypt.asc (Links to External Site)
Cause:   Input validation error, State error

Message History:   This archive entry has one or more follow-up message(s) listed below.
Jun 5 2012 (Check Point Issues Fix for Check Point IPSO) FreeBSD crypt(3) Hash Generation Error May Generate Incorrect Hashes
Check Point has issued a hotfix for Check Point IPSO.
Jun 25 2012 (Red Hat Issues Fix for PostgreSQL) FreeBSD crypt(3) Hash Generation Error May Generate Incorrect Hashes
Red Hat has issued a fix for PostgreSQL for Red Hat Enterprise Linux 5.
Jun 25 2012 (Red Hat Issues Fix for PostgreSQL) FreeBSD crypt(3) Hash Generation Error May Generate Incorrect Hashes
Red Hat has issued a fix for PostgreSQL for Red Hat Enterprise Linux 5 and 6.



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