{"id":113594,"date":"2024-02-14T22:02:42","date_gmt":"2024-02-14T20:02:42","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/uyazvimosti-keytrap-i-nsec3-zatragivayushhie-bolshinstvo-realizaczij-dnssec"},"modified":"2024-02-14T22:02:42","modified_gmt":"2024-02-14T20:02:42","slug":"uyazvimosti-keytrap-i-nsec3-zatragivayushhie-bolshinstvo-realizaczij-dnssec","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sq\/blog\/novosti-interneta\/uyazvimosti-keytrap-i-nsec3-zatragivayushhie-bolshinstvo-realizaczij-dnssec","title":{"rendered":"Vulnerabilitetet KeyTrap dhe NSEC3, q\u00eb prekin shumic\u00ebn e implementimeve t\u00eb DNSSEC","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>N\u00eb implementime t\u00eb ndryshme t\u00eb protokollit DNSSEC jan\u00eb identifikuar dy vulnerabilitete q\u00eb prekin DNS-resolver\u00ebt BIND, PowerDNS, dnsmasq, Knot Resolver dhe Unbound. Vulgaritetet lejojn\u00eb q\u00eb t\u00eb arrihet nj\u00eb nd\u00ebrprerje n\u00eb sh\u00ebrbim t\u00eb DNS-resolver\u00ebve q\u00eb kryejn\u00eb validimin p\u00ebrmes DNSSEC, p\u00ebr shkak t\u00eb ngarkes\u00ebs s\u00eb lart\u00eb n\u00eb CPU, q\u00eb pengon p\u00ebrpunimin e k\u00ebrkesave t\u00eb tjera. P\u00ebr t\u00eb kryer nj\u00eb sulm, mjafton t\u00eb d\u00ebrgoni n\u00eb nj\u00eb DNS-resolver q\u00eb p\u00ebrdor DNSSEC nj\u00eb k\u00ebrkes\u00eb q\u00eb \u00e7on n\u00eb referenc\u00ebn e nj\u00eb zone DNS t\u00eb ve\u00e7uar n\u00eb serverin e sulmuesit.      <\/p>\n<p>Problemet e identifikuara:  <\/p>\n<ul>\n<li class=\"l\"> CVE-2023-50387 (\u043a\u043e\u0434\u043e\u0432\u043e\u0435 \u0438\u043c\u044f KeyTrap) &#8212; \u043f\u0440\u0438 \u043e\u0431\u0440\u0430\u0449\u0435\u043d\u0438\u0438 \u043a \u0441\u043f\u0435\u0446\u0438\u0430\u043b\u044c\u043d\u043e \u043e\u0444\u043e\u0440\u043c\u043b\u0435\u043d\u043d\u044b\u043c  DNS-\u0437\u043e\u043d\u0430\u043c \u043f\u0440\u0438\u0432\u043e\u0434\u0438\u0442 \u043a \u043e\u0442\u043a\u0430\u0437\u0443 \u0432 \u043e\u0431\u0441\u043b\u0443\u0436\u0438\u0432\u0430\u043d\u0438\u0438 \u0438\u0437-\u0437\u0430 \u0441\u043e\u0437\u0434\u0430\u043d\u0438\u044f \u0437\u043d\u0430\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u0439 \u043d\u0430\u0433\u0440\u0443\u0437\u043a\u0438 \u043d\u0430 CPU \u0438 \u0434\u043b\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u0433\u043e \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f \u043f\u0440\u043e\u0432\u0435\u0440\u043a\u0438 DNSSEC. \u0414\u043b\u044f \u0441\u043e\u0432\u0435\u0440\u0448\u0435\u043d\u0438\u044f \u0430\u0442\u0430\u043a\u0438 \u043d\u0435\u043e\u0431\u0445\u043e\u0434\u0438\u043c\u043e \u0440\u0430\u0437\u043c\u0435\u0441\u0442\u0438\u0442\u044c \u043d\u0430 \u043f\u043e\u0434\u043a\u043e\u043d\u0442\u0440\u043e\u043b\u044c\u043d\u043e\u043c \u0430\u0442\u0430\u043a\u0443\u044e\u0449\u0435\u043c\u0443 DNS-\u0441\u0435\u0440\u0432\u0435\u0440\u0435 \u0434\u043e\u043c\u0435\u043d\u043d\u0443\u044e \u0437\u043e\u043d\u0443 \u0441 \u0432\u0440\u0435\u0434\u043e\u043d\u043e\u0441\u043d\u044b\u043c\u0438 \u043d\u0430\u0441\u0442\u0440\u043e\u0439\u043a\u0430\u043c\u0438, \u0430 \u0442\u0430\u043a\u0436\u0435 \u0434\u043e\u0431\u0438\u0442\u044c\u0441\u044f \u043e\u0431\u0440\u0430\u0449\u0435\u043d\u0438\u044f \u044d\u0442\u043e\u0439 \u0437\u043e\u043d\u0435 \u0440\u0435\u043a\u0443\u0440\u0441\u0438\u0432\u043d\u043e\u0433\u043e DNS-\u0441\u0435\u0440\u0432\u0435\u0440\u0430, \u043e\u0442\u043a\u0430\u0437\u0430 \u0432 \u043e\u0431\u0441\u043b\u0443\u0436\u0438\u0432\u0430\u043d\u0438\u0438 \u043a\u043e\u0442\u043e\u0440\u043e\u0433\u043e \u0434\u043e\u0431\u0438\u0432\u0430\u0435\u0442\u0441\u044f \u0430\u0442\u0430\u043a\u0443\u044e\u0449\u0438\u0439.\n<p>Parametrat e d\u00ebmsh\u00ebm konsistojn\u00eb n\u00eb p\u00ebrdorimin p\u00ebr zon\u00ebn e nj\u00eb kombinimi t\u00eb \u00e7el\u00ebsave q\u00eb jan\u00eb n\u00eb konflikt me nj\u00ebri-tjetrin, regjistrimeve RRSET dhe n\u00ebnshkrimeve digjitale. P\u00ebrpjekja p\u00ebr verifikim me k\u00ebta \u00e7el\u00ebsa \u00e7on n\u00eb realizimin e operacioneve t\u00eb zgjatura dhe intensive p\u00ebr burimet q\u00eb mund t\u00eb ngarkojn\u00eb plot\u00ebsisht CPU-n\u00eb dhe t\u00eb bllokojn\u00eb p\u00ebrpunimin e k\u00ebrkesave t\u00eb tjera (p.sh., raportohet se gjat\u00eb sulmit ndaj BIND-it, \u00ebsht\u00eb arritur q\u00eb t\u00eb ndalet p\u00ebrpunimi i k\u00ebrkesave t\u00eb tjera p\u00ebr 16 or\u00eb).      <\/p>\n<li class=\"l\"> CVE-2023-50868 (\u043a\u043e\u0434\u043e\u0432\u043e\u0435 \u0438\u043c\u044f NSEC3) &#8212; \u043e\u0442\u043a\u0430\u0437 \u0432 \u043e\u0431\u0441\u043b\u0443\u0436\u0438\u0432\u0430\u043d\u0438\u0438 \u0438\u0437-\u0437\u0430 \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f \u0437\u043d\u0430\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u044b\u0445 \u0432\u044b\u0447\u0438\u0441\u043b\u0435\u043d\u0438\u0439 \u043f\u0440\u0438 \u0432\u044b\u0447\u0438\u0441\u043b\u0435\u043d\u0438\u0438 \u0445\u044d\u0448\u0435\u0439 \u0432 \u0437\u0430\u043f\u0438\u0441\u044f\u0445 NSEC3 (Next Secure v3) \u043f\u0440\u0438 \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0435 \u0441\u043f\u0435\u0446\u0438\u0430\u043b\u044c\u043d\u043e \u043e\u0444\u043e\u0440\u043c\u043b\u0435\u043d\u043d\u044b\u0445 \u043e\u0442\u0432\u0435\u0442\u043e\u0432 DNSSEC. \u041c\u0435\u0442\u043e\u0434 \u0430\u0442\u0430\u043a\u0438 \u043d\u0430\u043f\u043e\u043c\u0438\u043d\u0430\u0435\u0442 \u043f\u0435\u0440\u0432\u0443\u044e \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c, \u0437\u0430 \u0438\u0441\u043a\u043b\u044e\u0447\u0435\u043d\u0438\u0435\u043c \u0442\u043e\u0433\u043e ,\u0447\u0442\u043e \u043d\u0430 DNS-\u0441\u0435\u0440\u0432\u0435\u0440\u0435 \u0437\u043b\u043e\u0443\u043c\u044b\u0448\u043b\u0435\u043d\u043d\u0438\u043a\u0430 \u0441\u043e\u0437\u0434\u0430\u0451\u0442\u0441\u044f \u0441\u043f\u0435\u0446\u0438\u0430\u043b\u044c\u043d\u043e \u043e\u0444\u043e\u0440\u043c\u043b\u0435\u043d\u043d\u044b\u0439 \u043d\u0430\u0431\u043e\u0440 \u0437\u0430\u043f\u0438\u0441\u0435\u0439 NSEC3 RRSET.      <\/ul>\n<p>K\u00ebto vulnerabilitete rezultojn\u00eb nga p\u00ebrcaktimi n\u00eb specifikimin e DNSSEC t\u00eb mund\u00ebsis\u00eb q\u00eb serveri DNS t\u00eb d\u00ebrgoj\u00eb t\u00eb gjith\u00eb \u00e7el\u00ebsat kriptografik\u00eb t\u00eb disponuesh\u00ebm, nd\u00ebrkoh\u00eb q\u00eb resolver\u00ebt duhet t\u00eb p\u00ebrpunojn\u00eb \u00e7do \u00e7el\u00ebs t\u00eb marr\u00eb derisa verifikimi t\u00eb p\u00ebrfundoj\u00eb me sukses ose t\u00eb gjith\u00eb \u00e7el\u00ebsat e marr\u00eb t\u00eb jen\u00eb verifikuar.    <\/p>\n<p>Si masa p\u00ebr t\u00eb bllokuar vulnerabilitetet n\u00eb resolver\u00eb, \u00ebsht\u00eb kufizuar numri maksimal i \u00e7el\u00ebsave DNSSEC t\u00eb implikuar n\u00eb procesin e nd\u00ebrtimit t\u00eb zinxhirit t\u00eb besimit, dhe numri maksimal i llogaritjeve t\u00eb hash-eve p\u00ebr NSEC3, si dhe jan\u00eb kufizuar p\u00ebrpjekjet e p\u00ebrs\u00ebritura p\u00ebr verifikim p\u00ebr \u00e7do RRSET (kombinime \u00e7el\u00ebsash dhe n\u00ebnshkrimesh) dhe \u00e7do p\u00ebrgjigjeje. <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/sq\/server\/dts-los-angeles\/\"   title=\"server\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"3614\">server<\/a>.     <\/p>\n<p>Vulnerabilitetet jan\u00eb eliminuar n\u00eb p\u00ebrdit\u00ebsimet Unbound (1.19.1), PowerDNS Recursor (4.8.6, 4.9.3, 5.0.2), Knot Resolver (5.7.1), dnsmasq (2.90) dhe BIND (9.16.48, 9.18.24 dhe 9.19.21). Statusi i eliminimit t\u00eb vulnerabiliteteve n\u00eb distribucionet mund t\u00eb vler\u00ebsohet n\u00eb k\u00ebto faqe: Debian, Ubuntu, SUSE, RHEL, Fedora, Arch Linux, Gentoo, Slackware, NetBSD, FreeBSD.            <\/p>\n<p>N\u00eb versionet e DNS-serverit BIND 9.16.48, 9.18.24 dhe 9.19.21 jan\u00eb eliminuar gjithashtu disa vulnerabilitete t\u00eb tjera:  <\/p>\n<ul>\n<li class=\"l\"> CVE-2023-4408 &#8212; \u0440\u0430\u0437\u0431\u043e\u0440 \u0431\u043e\u043b\u044c\u0448\u0438\u0445 DNS-\u0441\u043e\u043e\u0431\u0449\u0435\u043d\u0438\u0439 \u043c\u043e\u0436\u0435\u0442 \u043f\u0440\u0438\u0432\u0435\u0441\u0442\u0438 \u043a \u0441\u043e\u0437\u0434\u0430\u043d\u0438\u044e \u0432\u044b\u0441\u043e\u043a\u043e\u0439 \u043d\u0430\u0433\u0440\u0443\u0437\u043a\u0438 \u043d\u0430 CPU.\n<li class=\"l\"> CVE-2023-5517 &#8212; \u0437\u0430\u043f\u0440\u043e\u0441 \u0441\u043f\u0435\u0446\u0438\u0430\u043b\u044c\u043d\u043e \u043e\u0444\u043e\u0440\u043c\u043b\u0435\u043d\u043d\u043e\u0439 \u043e\u0431\u0440\u0430\u0442\u043d\u043e\u0439 \u0437\u043e\u043d\u044b \u043c\u043e\u0436\u0435\u0442 \u043f\u0440\u0438\u0432\u0435\u0441\u0442\u0438 \u043a \u0430\u0432\u0430\u0440\u0438\u0439\u043d\u043e\u043c\u0443 \u0437\u0430\u0432\u0435\u0440\u0448\u0435\u043d\u0438\u044e \u0438\u0437-\u0437\u0430 \u0441\u0440\u0430\u0431\u0430\u0442\u044b\u0432\u0430\u043d\u0438\u044f assert-\u043f\u0440\u043e\u0432\u0435\u0440\u043a\u0438. \u041f\u0440\u043e\u0431\u043b\u0435\u043c\u0430 \u043f\u0440\u043e\u044f\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u0442\u043e\u043b\u044c\u043a\u043e \u0432 \u043a\u043e\u043d\u0444\u0438\u0433\u0443\u0440\u0430\u0446\u0438\u044f\u0445 \u0441 \u0432\u043a\u043b\u044e\u0447\u0451\u043d\u043d\u043e\u0439 \u043d\u0430\u0441\u0442\u0440\u043e\u0439\u043a\u043e\u0439 &#171;nxdomain-redirect&#187;.\n<li class=\"l\"> CVE-2023-5679 &#8212; \u0440\u0435\u043a\u0443\u0440\u0441\u0438\u0432\u043d\u043e\u0435 \u043e\u043f\u0440\u0435\u0434\u0435\u043b\u0435\u043d\u0438\u0435 \u0445\u043e\u0441\u0442\u0430 \u043c\u043e\u0436\u0435\u0442 \u043f\u0440\u0438\u0432\u0435\u0441\u0442\u0438 \u043a \u0430\u0432\u0430\u0440\u0438\u0439\u043d\u043e\u043c\u0443 \u0437\u0430\u0432\u0435\u0440\u0448\u0435\u043d\u0438\u044e \u0438\u0437-\u0437\u0430 \u0441\u0440\u0430\u0431\u0430\u0442\u044b\u0432\u0430\u043d\u0438\u044f assert-\u043f\u0440\u043e\u0432\u0435\u0440\u043a\u0438 \u043d\u0430 \u0441\u0438\u0441\u0442\u0435\u043c\u0430\u0445 \u0441 \u0432\u043a\u043b\u044e\u0447\u0451\u043d\u043d\u043e\u0439 \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u043e\u0439 DNS64 \u0438  &#171;serve-stale&#187; (\u043d\u0430\u0441\u0442\u0440\u043e\u0439\u043a\u0438, stale-cache-enable \u0438 stale-answer-enable) .\n<li class=\"l\"> CVE-2023-6516 &#8212; \u0441\u043f\u0435\u0446\u0438\u0430\u043b\u044c\u043d\u043e \u043e\u0444\u043e\u0440\u043c\u043b\u0435\u043d\u043d\u044b\u0439 \u0440\u0435\u043a\u0443\u0440\u0441\u0438\u0432\u043d\u044b\u0435 \u0437\u0430\u043f\u0440\u043e\u0441\u044b \u043c\u043e\u0433\u0443\u0442 \u043f\u0440\u0438\u0432\u0435\u0441\u0442\u0438 \u043a \u0438\u0441\u0447\u0435\u0440\u043f\u0430\u043d\u0438\u044e \u0434\u043e\u0441\u0442\u0443\u043f\u043d\u043e\u0439 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u0443 \u043f\u0430\u043c\u044f\u0442\u0438.    <\/ul>\n<p>Burimi: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=60599\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0412 \u0440\u0430\u0437\u043b\u0438\u0447\u043d\u044b\u0445 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u044f\u0445 \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b\u0430 DNSSEC \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u044b \u0434\u0432\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438, \u0437\u0430\u0442\u0440\u0430\u0433\u0438\u0432\u0430\u044e\u0449\u0438\u0435 DNS-\u0440\u0435\u0437\u043e\u043b\u0432\u0435\u0440\u044b BIND, PowerDNS, dnsmasq, Knot Resolver \u0438 Unbound. \u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0442 \u0434\u043e\u0431\u0438\u0442\u044c\u0441\u044f \u043e\u0442\u043a\u0430\u0437\u0430 \u0432 \u043e\u0431\u0441\u043b\u0443\u0436\u0438\u0432\u0430\u043d\u0438\u0438 DNS-\u0440\u0435\u0437\u043e\u043b\u0432\u0435\u0440\u043e\u0432, \u0432\u044b\u043f\u043e\u043b\u043d\u044f\u044e\u0449\u0438\u0445 \u0432\u0430\u043b\u0438\u0434\u0430\u0446\u0438\u044e \u043f\u0440\u0438 \u043f\u043e\u043c\u043e\u0449\u0438 DNSSEC, \u0438\u0437-\u0437\u0430 \u0432\u043e\u0437\u043d\u0438\u043a\u043d\u043e\u0432\u0435\u043d\u0438\u044f \u0432\u044b\u0441\u043e\u043a\u043e\u0439 \u043d\u0430\u0433\u0440\u0443\u0437\u043a\u0438 \u043d\u0430 CPU, \u043c\u0435\u0448\u0430\u044e\u0449\u0435\u0439 \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0435 \u0434\u0440\u0443\u0433\u0438\u0445 \u0437\u0430\u043f\u0440\u043e\u0441\u043e\u0432. \u0414\u043b\u044f \u0441\u043e\u0432\u0435\u0440\u0448\u0435\u043d\u0438\u044f \u0430\u0442\u0430\u043a\u0438 \u0434\u043e\u0441\u0442\u0430\u0442\u043e\u0447\u043d\u043e \u043e\u0442\u043f\u0440\u0430\u0432\u0438\u0442\u044c \u043d\u0430 DNS-\u0440\u0435\u0437\u043e\u043b\u0432\u0435\u0440, \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u044e\u0449\u0438\u0439 DNSSEC, \u0437\u0430\u043f\u0440\u043e\u0441, \u043f\u0440\u0438\u0432\u043e\u0434\u044f\u0449\u0438\u0439 \u043a \u043e\u0431\u0440\u0430\u0449\u0435\u043d\u0438\u044e \u043a \u0441\u043f\u0435\u0446\u0438\u0430\u043b\u044c\u043d\u043e \u043e\u0444\u043e\u0440\u043c\u043b\u0435\u043d\u043d\u043e\u0439 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