BlockHosts Remote Denial of Service Vulnerability

BID:24090

Info

BlockHosts Remote Denial of Service Vulnerability

Bugtraq ID: 24090
Class: Design Error
CVE: CVE-2007-2765
Remote: Yes
Local: No
Published: May 22 2007 12:00AM
Updated: Jun 07 2007 03:10AM
Credit: The vendor reported this issue.
Vulnerable: ACZoom BlockHosts 2.0.2
Not Vulnerable: ACZoom BlockHosts 2.0.3

Discussion

BlockHosts Remote Denial of Service Vulnerability

BlockHosts is prone to a remote denial-of-service vulnerability because the application fails to properly validate the source of authentication failure messages.

Successfully exploiting this issue allows remote attackers to add arbitrary IP addresses to the block list used by the application. This allows attackers to deny further SSH network access to arbitrary IP addresses, denying service to legitimate users.

Versions of BlockHosts prior to 2.0.3 are vulnerable to this issue.

Exploit / POC

BlockHosts Remote Denial of Service Vulnerability

Attackers use standard SSH-client software to exploit this issue.

Solution / Fix

BlockHosts Remote Denial of Service Vulnerability

Solution:
The vendor released an update to address this issue. Please see the references for more information.


ACZoom BlockHosts 2.0.2

References

BlockHosts Remote Denial of Service Vulnerability

References:
© CVE.report 2026 |

Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. It is the responsibility of user to evaluate the accuracy, completeness or usefulness of any information, opinion, advice or other content. EACH USER WILL BE SOLELY RESPONSIBLE FOR ANY consequences of his or her direct or indirect use of this web site. ALL WARRANTIES OF ANY KIND ARE EXPRESSLY DISCLAIMED. This site will NOT BE LIABLE FOR ANY DIRECT, INDIRECT or any other kind of loss.

CVE, CWE, and OVAL are registred trademarks of The MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. This site includes MITRE data granted under the following license.

Free CVE JSON API cve.report/api

CVE.report and Source URL Uptime Status status.cve.report