DenyHosts 2.6 does not properly parse sshd log files, which allows remote attackers to add arbitrary hosts to the /etc/hosts.deny file and cause a denial of service by adding arbitrary IP addresses to the sshd log file, as demonstrated by logging in via ssh with a client protocol version identification containing an IP address string, a different vector than CVE-2006-6301.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Denyhosts | Denyhosts | 2.6 (including) | 2.6 (including) |
| Denyhosts | Ubuntu | devel | * |
| Denyhosts | Ubuntu | edgy | * |
| Denyhosts | Ubuntu | feisty | * |
| Denyhosts | Ubuntu | gutsy | * |
| Denyhosts | Ubuntu | upstream | * |
References
- http://bugs.gentoo.org/show_bug.cgi?id=181213
- http://osvdb.org/42482
- http://secunia.com/advisories/27254
- http://security.gentoo.org/glsa/glsa-200710-14.xml
- http://www.ossec.net/en/attacking-loganalysis.html
- http://www.securityfocus.com/bid/26061
- https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=244943
- https://exchange.xforce.ibmcloud.com/vulnerabilities/37199
- http://bugs.gentoo.org/show_bug.cgi?id=181213
- http://osvdb.org/42482
- http://secunia.com/advisories/27254
- http://security.gentoo.org/glsa/glsa-200710-14.xml
- http://www.ossec.net/en/attacking-loganalysis.html
- http://www.securityfocus.com/bid/26061
- https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=244943
- https://exchange.xforce.ibmcloud.com/vulnerabilities/37199