{"cve":"CVE-2007-4322","nvd":{"published":"2007-08-14T00:17:00.000","modified":"2026-06-16T22:43:48.647","status":"Modified","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.","cvss_v4":null,"cvss_v3":null,"cwes":[],"references":["http://osvdb.org/36515","http://www.aczoom.com/tools/blockhosts/CHANGES","http://www.ossec.net/en/attacking-loganalysis.html","http://osvdb.org/36515","http://www.aczoom.com/tools/blockhosts/CHANGES"],"products":["ac_zoom:blockhosts"],"source":"nvd","synced_at":"2026-10-19T19:48:28.501292361+00:00"},"epss":{"cve":"CVE-2007-4322","score":0.01153,"percentile":0.66971,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}