{"id":"CVE-2007-2765","aliases":["EUVD-2007-2757","GHSA-rjp4-hv4f-vvf6"],"status":"published","title":"blockhosts.py in BlockHosts before 2.0.3 does not properly parse daemon log files, which allows...","description":"blockhosts.py in BlockHosts before 2.0.3 does not properly parse daemon 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 logging in through ssh using a login name containing certain strings with an IP address, which is not properly handled by a regular expression, a related issue to CVE-2006-6301.","severity":{"version":"2.0","score":6.8,"vector":"AV:N/AC:L/Au:S/C:N/I:N/A:C","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.01531,"percentile":0.74935,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"published":"2007-05-18T22:00:00Z","modified":"2026-06-16T22:40:16Z","products":[{"vendor":"ac_zoom","product":"blockhosts"}],"references":[{"url":"http://www.securityfocus.com/bid/24090","tags":["vdb-entry","x_refsource_BID","x_transferred"]},{"url":"http://www.vupen.com/english/advisories/2007/1906","tags":["vdb-entry","x_refsource_VUPEN","x_transferred"]},{"url":"http://osvdb.org/36516","tags":["vdb-entry","x_refsource_OSVDB","x_transferred"]},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/34426","tags":["vdb-entry","x_refsource_XF","x_transferred"]},{"url":"http://www.aczoom.com/tools/blockhosts/CHANGES","tags":["x_refsource_CONFIRM","x_transferred"]},{"url":"http://secunia.com/advisories/25352","tags":["third-party-advisory","x_refsource_SECUNIA","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2007-2765"},{"url":"https://github.com/advisories/GHSA-rjp4-hv4f-vvf6"}],"sources":{"cve":[{"id":"CVE-2007-2765","description":"blockhosts.py in BlockHosts before 2.0.3 does not properly parse daemon 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 logging in through ssh using a login name containing certain strings with an IP address, which is not properly handled by a regular expression, a related issue to CVE-2006-6301.","status":"published","published":"2007-05-18T22:00:00Z","modified":"2024-08-07T13:49:57.31Z","updated_at":"2026-11-02T13:32:23.14582Z"}],"euvd":[{"id":"EUVD-2007-2757","description":"blockhosts.py in BlockHosts before 2.0.3 does not properly parse daemon 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 logging in through ssh using a login name containing certain strings with an IP address, which is not properly handled by a regular expression, a related issue to CVE-2006-6301.","status":"published","published":"2007-05-18T22:00:00Z","modified":"2024-08-07T13:49:57Z","updated_at":"2026-11-03T01:38:19.624156Z"}],"ghsa":[{"id":"GHSA-rjp4-hv4f-vvf6","title":"blockhosts.py in BlockHosts before 2.0.3 does not properly parse daemon log files, which allows...","description":"blockhosts.py in BlockHosts before 2.0.3 does not properly parse daemon 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 logging in through ssh using a login name containing certain strings with an IP address, which is not properly handled by a regular expression, a related issue to CVE-2006-6301.","status":"published","published":"2022-05-01T18:06:57Z","modified":"2023-01-31T05:04:00Z","updated_at":"2026-11-02T14:48:35.347496Z"}],"nvd":[{"id":"CVE-2007-2765","description":"blockhosts.py in BlockHosts before 2.0.3 does not properly parse daemon 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 logging in through ssh using a login name containing certain strings with an IP address, which is not properly handled by a regular expression, a related issue to CVE-2006-6301.","status":"published","published":"2007-05-18T22:30:00Z","modified":"2026-06-16T22:40:16.527Z","cvss":[{"version":"2.0","score":6.8,"vector":"AV:N/AC:L/Au:S/C:N/I:N/A:C","level":"medium","assessor":"primary"}],"updated_at":"2026-11-02T14:01:16.479378Z"}]}}