{"id":670,"date":"2008-04-05T11:48:56","date_gmt":"2008-04-05T15:48:56","guid":{"rendered":"http:\/\/wehuberconsultingllc.com\/wordpress\/2008\/04\/05\/iss-x-force-database-icmp-timestamp322-icmp-timestamp-requests\/"},"modified":"2008-04-05T11:48:56","modified_gmt":"2008-04-05T15:48:56","slug":"iss-x-force-database-icmp-timestamp322-icmp-timestamp-requests","status":"publish","type":"post","link":"https:\/\/wehuberconsultingllc.com\/wordpress\/2008\/04\/05\/iss-x-force-database-icmp-timestamp322-icmp-timestamp-requests\/","title":{"rendered":"ISS X-Force Database: icmp-timestamp(322): ICMP timestamp requests"},"content":{"rendered":"<p>A PCI audit point I saw recently recommended that servers not respond to ICMP timestamp requests. For externally based web servers this probably means asking your host provider to implement a rule on their router to block ICMP packets type 13 or 14 with a code of 0. I haven&#8217;t tried this but this should allow normal maintenance packets(e.g. ping) and prevent echo tests using timestamp requests.<\/p>\n<blockquote>\n<p><b>Description:<\/b><\/p>\n<p>The target computer responded to an ICMP timestamp request. By accurately determining the target&#8217;s clock state, an attacker can more effectively attack certain time-based pseudorandom number generators (PRNGs) and the authentication systems that rely on them.<\/p>\n<p><b>Platforms Affected:<\/b><\/p>\n<ul>\n<li>Apple, Mac OS <\/li>\n<li>Cisco, IOS <\/li>\n<li>Data General, DG\/UX <\/li>\n<li>HP, HP-UX <\/li>\n<li>HP, Tru64 UNIX <\/li>\n<li>IBM, AIX <\/li>\n<li>IBM, OS\/2 <\/li>\n<li>Linux, Linux <\/li>\n<li>Microsoft, Windows 98 Second Edition <\/li>\n<li>Microsoft, Windows 2000 <\/li>\n<li>Microsoft, Windows 2003 <\/li>\n<li>Microsoft, Windows 95 <\/li>\n<li>Microsoft, Windows 98 <\/li>\n<li>Microsoft, Windows Me <\/li>\n<li>Microsoft, Windows NT <\/li>\n<li>Microsoft, Windows XP <\/li>\n<li>Novell, Novell NetWare <\/li>\n<li>SCO, SCO Unix <\/li>\n<li>SGI, IRIX <\/li>\n<li>Sun, Solaris <\/li>\n<li>Wind River, BSD <\/li>\n<\/ul>\n<p><b>Remedy:<\/b><\/p>\n<p>Configure your firewall or filtering router to block outgoing ICMP packets. Block ICMP packets of type 13 or 14 and\/or code 0.<\/p>\n<\/blockquote>\n<p><a href=\"http:\/\/xforce.iss.net\/xforce\/xfdb\/322\">ISS X-Force Database: icmp-timestamp(322): ICMP timestamp requests<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>A PCI audit point I saw recently recommended that servers not respond to ICMP timestamp requests. For externally based web servers this probably means asking your host provider to implement a rule on their router to block ICMP packets type 13 or 14 with a code of 0. I haven&#8217;t tried this but this should allow normal maintenance packets(e.g. ping) and prevent echo tests using timestamp requests.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[14],"tags":[131,16],"class_list":["post-670","post","type-post","status-publish","format-standard","hentry","category-security","tag-security","tag-webdesign"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/p4iN3d-aO","jetpack-related-posts":[],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/wehuberconsultingllc.com\/wordpress\/wp-json\/wp\/v2\/posts\/670","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wehuberconsultingllc.com\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/wehuberconsultingllc.com\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/wehuberconsultingllc.com\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/wehuberconsultingllc.com\/wordpress\/wp-json\/wp\/v2\/comments?post=670"}],"version-history":[{"count":0,"href":"https:\/\/wehuberconsultingllc.com\/wordpress\/wp-json\/wp\/v2\/posts\/670\/revisions"}],"wp:attachment":[{"href":"https:\/\/wehuberconsultingllc.com\/wordpress\/wp-json\/wp\/v2\/media?parent=670"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/wehuberconsultingllc.com\/wordpress\/wp-json\/wp\/v2\/categories?post=670"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/wehuberconsultingllc.com\/wordpress\/wp-json\/wp\/v2\/tags?post=670"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}