{"id":"CVE-2007-4322","aliases":["EUVD-2007-4305","GHSA-h24w-j9mf-mjf2"],"status":"published","title":"BlockHosts before 2.0.4 does not properly parse (1) sshd and (2) vsftpd log files, which allows...","description":"BlockHosts before 2.0.4 does not properly parse (1) sshd and (2) vsftpd log files, which allows remote attackers to add arbitrary deny entries to the /etc/hosts.allow file and cause a denial of service by adding arbitrary IP addresses to a daemon log file, as demonstrated by connecting through ssh with a client protocol version identification containing an IP address string, or connecting through ftp with a username containing an IP address string, different vectors than CVE-2007-2765.","severity":{"version":"2.0","score":6.8,"vector":"AV:N/AC:M/Au:N/C:P/I:P/A:P","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.01153,"percentile":0.67175,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"published":"2007-08-14T00:00:00Z","modified":"2026-06-16T22:43:48Z","products":[{"vendor":"ac_zoom","product":"blockhosts"}],"references":[{"url":"http://www.aczoom.com/tools/blockhosts/CHANGES","tags":["x_refsource_CONFIRM","x_transferred"]},{"url":"http://www.ossec.net/en/attacking-loganalysis.html","tags":["x_refsource_MISC","x_transferred"]},{"url":"http://osvdb.org/36515","tags":["vdb-entry","x_refsource_OSVDB","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2007-4322"},{"url":"https://github.com/advisories/GHSA-h24w-j9mf-mjf2"}],"sources":{"cve":[{"id":"CVE-2007-4322","description":"BlockHosts before 2.0.4 does not properly parse (1) sshd and (2) vsftpd log files, which allows remote attackers to add arbitrary deny entries to the /etc/hosts.allow file and cause a denial of service by adding arbitrary IP addresses to a daemon log file, as demonstrated by connecting through ssh with a client protocol version identification containing an IP address string, or connecting through ftp with a username containing an IP address string, different vectors than CVE-2007-2765.","status":"published","published":"2007-08-14T00:00:00Z","modified":"2024-08-07T14:53:55.64Z","updated_at":"2026-11-02T13:33:30.262137Z"}],"euvd":[{"id":"EUVD-2007-4305","description":"BlockHosts before 2.0.4 does not properly parse (1) sshd and (2) vsftpd log files, which allows remote attackers to add arbitrary deny entries to the /etc/hosts.allow file and cause a denial of service by adding arbitrary IP addresses to a daemon log file, as demonstrated by connecting through ssh with a client protocol version identification containing an IP address string, or connecting through ftp with a username containing an IP address string, different vectors than CVE-2007-2765.","status":"published","published":"2007-08-14T00:00:00Z","modified":"2024-08-07T14:53:55Z","updated_at":"2026-11-03T01:16:22.0225Z"}],"ghsa":[{"id":"GHSA-h24w-j9mf-mjf2","title":"BlockHosts before 2.0.4 does not properly parse (1) sshd and (2) vsftpd log files, which allows...","description":"BlockHosts before 2.0.4 does not properly parse (1) sshd and (2) vsftpd log files, which allows remote attackers to add arbitrary deny entries to the /etc/hosts.allow file and cause a denial of service by adding arbitrary IP addresses to a daemon log file, as demonstrated by connecting through ssh with a client protocol version identification containing an IP address string, or connecting through ftp with a username containing an IP address string, different vectors than CVE-2007-2765.","status":"published","published":"2022-05-01T18:22:32Z","modified":"2023-01-31T05:04:37Z","updated_at":"2026-11-02T14:48:41.999229Z"}],"nvd":[{"id":"CVE-2007-4322","description":"BlockHosts before 2.0.4 does not properly parse (1) sshd and (2) vsftpd log files, which allows remote attackers to add arbitrary deny entries to the /etc/hosts.allow file and cause a denial of service by adding arbitrary IP addresses to a daemon log file, as demonstrated by connecting through ssh with a client protocol version identification containing an IP address string, or connecting through ftp with a username containing an IP address string, different vectors than CVE-2007-2765.","status":"published","published":"2007-08-14T00:17:00Z","modified":"2026-06-16T22:43:48.647Z","cvss":[{"version":"2.0","score":6.8,"vector":"AV:N/AC:M/Au:N/C:P/I:P/A:P","level":"medium","assessor":"primary"}],"updated_at":"2026-11-02T14:01:19.102336Z"}]}}