The crypt_gensalt functions for BSDI-style extended DES-based and FreeBSD-sytle MD5-based password hashes in crypt_blowfish 0.4.7 and earlier do not evenly and randomly distribute salts, which makes it easier for attackers to guess passwords from a stolen password file due to the increased number of collisions.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Crypt_blowfish | Solar_designer | 0.4.7 (including) | 0.4.7 (including) |
| Red Hat Enterprise Linux 3 | RedHat | rh-postgresql-0:7.3.15-2 | * |
| Red Hat Enterprise Linux 4 | RedHat | postgresql-0:7.4.13-2.RHEL4.1 | * |
References
- ftp://patches.sgi.com/support/free/security/advisories/20060602-01-U.asc
- http://cvsweb.openwall.com/cgi/cvsweb.cgi/Owl/packages/glibc/crypt_blowfish/crypt_gensalt.c?only_with_tag=CRYPT_BLOWFISH_1_0
- http://secunia.com/advisories/18772
- http://secunia.com/advisories/20232
- http://secunia.com/advisories/20653
- http://secunia.com/advisories/20782
- http://support.avaya.com/elmodocs2/security/ASA-2006-113.htm
- http://www.osvdb.org/23005
- http://www.redhat.com/support/errata/RHSA-2006-0526.html
- http://www.securityfocus.com/archive/1/424260/100/0/threaded
- http://www.vupen.com/english/advisories/2006/0477
- https://exchange.xforce.ibmcloud.com/vulnerabilities/24590
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11502
- ftp://patches.sgi.com/support/free/security/advisories/20060602-01-U.asc
- http://cvsweb.openwall.com/cgi/cvsweb.cgi/Owl/packages/glibc/crypt_blowfish/crypt_gensalt.c?only_with_tag=CRYPT_BLOWFISH_1_0
- http://secunia.com/advisories/18772
- http://secunia.com/advisories/20232
- http://secunia.com/advisories/20653
- http://secunia.com/advisories/20782
- http://support.avaya.com/elmodocs2/security/ASA-2006-113.htm
- http://www.osvdb.org/23005
- http://www.redhat.com/support/errata/RHSA-2006-0526.html
- http://www.securityfocus.com/archive/1/424260/100/0/threaded
- http://www.vupen.com/english/advisories/2006/0477
- https://exchange.xforce.ibmcloud.com/vulnerabilities/24590
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11502