|
Openwall crypt_blowfish Salt Generation Weakness
|
|
Secunia Advisory:
|
SA18772
|
|
|
Release Date:
|
2006-02-08
|
|
Last Update:
|
2006-02-20
|
|
Popularity:
|
6,616 views
|
|
|
Critical:
|
Not critical
|
|
Impact:
|
Security Bypass
|
|
Where:
|
Local system
|
|
Solution Status:
|
Vendor Patch
|
|
| Software: | Openwall crypt_blowfish 0.x
|
|
|
Subscribe:
|
Instant alerts on relevant vulnerabilities 
|
|
| CVE reference: | CVE-2006-0591
|
|
Description:
A weakness has been reported in Openwall crypt_blowfish, which potentially can be exploited by malicious, local users to bypass certain security restrictions.
The weakness is caused due to signedness errors in crypt_gensalt.c. This increases the probability that certain extended-DES-based and MD5-based password hashes are generated using the same salt.
Successful exploitation allows the hashes to be tested against candidate passwords at a faster effective rate but requires access to the password file.
The weakness has been reported in version 0.4.7 and prior.
Solution:
Update to version 1.0
http://www.openwall.com/crypt/
Provided and/or discovered by:
The vendor credits Marko Kreen.
Changelog:
2006-02-09: Added CVE reference.
2006-02-20: Updated Advisory.
Original Advisory:
http://cvsweb.openwall.com/cgi/cvsweb...lt.c?only_with_tag=CRYPT_BLOWFISH_1_0
http://article.gmane.org/gmane.comp.security.bugtraq/21754
|
|
|
Track this Secunia Advisory
|
Customers of the Secunia Vulnerability Intelligence solutions will automatically receive updates when new information regarding this advisory is released.
Read more about our Vulnerability Intelligence solutions and what they can do for you and your company.
|
|
|
About this Secunia Advisory
|
Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
Secunia collects, validates, and verifies all vulnerability reports issued by security research groups, vendors, and others.
|
