{"id":421,"date":"2015-08-05T03:30:27","date_gmt":"2015-08-05T01:30:27","guid":{"rendered":"https:\/\/www.modserv.com\/blog\/?p=421"},"modified":"2016-02-13T21:42:18","modified_gmt":"2016-02-13T19:42:18","slug":"%d8%ab%d8%ba%d8%b1%d8%a9-%d8%ae%d8%b7%d9%8a%d8%b1%d8%a9-%d8%ac%d8%af%d8%a7%d9%8b-%d8%aa%d8%b3%d9%85%d8%ad-%d8%a8%d8%aa%d9%86%d9%81%d9%8a%d8%b0-%d9%87%d8%ac%d9%85%d8%a7%d8%aa-dos-%d9%81%d9%8a-bind","status":"publish","type":"post","link":"https:\/\/www.modserv.com\/blog\/%d8%af%d8%b1%d9%88%d8%b3-%d8%a7%d9%84%d8%b3%d9%8a%d8%b1%d9%81%d8%b1%d8%a7%d8%aa\/%d8%ab%d8%ba%d8%b1%d8%a9-%d8%ae%d8%b7%d9%8a%d8%b1%d8%a9-%d8%ac%d8%af%d8%a7%d9%8b-%d8%aa%d8%b3%d9%85%d8%ad-%d8%a8%d8%aa%d9%86%d9%81%d9%8a%d8%b0-%d9%87%d8%ac%d9%85%d8%a7%d8%aa-dos-%d9%81%d9%8a-bind","title":{"rendered":"\u062b\u063a\u0631\u0629 \u062e\u0637\u064a\u0631\u0629 \u062c\u062f\u0627\u064b \u062a\u0633\u0645\u062d \u0628\u062a\u0646\u0641\u064a\u0630 \u0647\u062c\u0645\u0627\u062a DoS \u0641\u064a BIND"},"content":{"rendered":"

\u0628\u0633\u0645 \u0627\u0644\u0644\u0647 \u0627\u0644\u0631\u062d\u0645\u0646 \u0627\u0644\u0631\u062d\u064a\u0645<\/p>\n

\u0638\u0647\u0631\u062a \u0645\u0646\u0630 \u0623\u064a\u0627\u0645 \u0642\u0644\u064a\u0644\u0629 \u062b\u063a\u0631\u0629 \u062e\u0637\u064a\u0631\u0629 \u0641\u064a BIND \u0627\u0644\u0645\u0633\u0626\u0648\u0644 \u0639\u0646 \u0627\u0644\u0640DNS \u0641\u064a \u0627\u0644\u0633\u064a\u0631\u0641\u0631\u0627\u062a \u0648\u0627\u0644\u062a\u064a \u062a\u062a\u064a\u062d \u0644\u0644\u0645\u062e\u062a\u0631\u0642 \u062a\u0646\u0641\u064a\u0630 \u0647\u062c\u0645\u0629 \u0645\u0646 \u0646\u0648\u0639 DoS \u0648\u0627\u0644\u062a\u064a \u062a\u0642\u0648\u0645 \u0628\u0634\u0644 \u062e\u062f\u0645\u0629 BIND \u0639\u0644\u064a \u0627\u0644\u0633\u064a\u0631\u0641\u0631 \u0627\u0644\u0645\u062e\u062a\u0631\u0642<\/p>\n

\u0627\u0644\u062b\u063a\u0631\u0629 \u062a\u0645 \u0628\u0631\u0645\u062c\u062a\u0647\u0627 \u0628\u0644\u063a\u0629 C<\/strong> \u0648\u062a\u0645 \u0625\u0635\u062f\u0627\u0631 \u0646\u0633\u062e\u0629 \u0623\u062e\u0631\u064a \u0645\u0646\u0647\u0627 \u0628\u0644\u063a\u0629 Python<\/strong><\/p>\n

\u062a\u0645\u00a0\u0638\u0647\u0648\u0631 \u0627\u0644\u062b\u063a\u0631\u0629 \u0645\u0646\u0630 5 \u0623\u064a\u0627\u0645<\/strong><\/p>\n

\u0648\u062a\u0645 \u0625\u0635\u062f\u0627\u0631 \u0643\u0648\u062f \u0627\u0644\u0625\u0633\u062a\u063a\u0644\u0627\u0644 PoC<\/strong> \u0628\u0634\u0643\u0644 \u0639\u0627\u0645 \u0645\u062a\u0627\u062d \u0644\u0644\u062c\u0645\u064a\u0639 (\u0644\u0644\u0623\u0633\u0641)<\/p>\n

\u062a\u0645 \u062a\u062c\u0631\u0628\u0629 \u0627\u0644\u0625\u0633\u062a\u063a\u0644\u0627\u0644 \u0648\u0642\u0627\u0645 \u0628\u0625\u064a\u0642\u0627\u0641 BIND \u0628\u0634\u0643\u0644 \u0643\u0627\u0645\u0644 \u0641\u064a 1 \u062b\u0627\u0646\u064a\u0629 \u0641\u0642\u0637!!<\/p>\n

\u0644\u0646 \u0623\u0642\u0648\u0645 \u0628\u0627\u0644\u062f\u062e\u0648\u0644 \u0641\u064a \u062a\u0641\u0627\u0635\u064a\u0644 \u062f\u0642\u064a\u0642\u0629 \u062a\u0641\u0627\u062f\u064a\u0627\u064b \u0644\u0636\u0639\u0627\u0641 \u0627\u0644\u0646\u0641\u0648\u0633 \u0627\u0644\u0630\u064a\u0646 \u064a\u0636\u0631\u0648\u0646 \u0627\u0644\u063a\u064a\u0631 \u0628\u062f\u0648\u0646 \u0633\u0628\u0628<\/p>\n

\u0627\u0644\u062b\u063a\u0631\u0629 \u0641\u064a \u0627\u0644\u0625\u0635\u062f\u0627\u0631\u0627\u062a 9.1.0 \u0625\u0644\u064a 9.8.x \u0648\u0627\u0644\u0625\u0635\u062f\u0627\u0631\u0627\u062a 9.9.0 \u0625\u0644\u064a 9.9.7-P1 \u0648\u0627\u0644\u0625\u0635\u062f\u0627\u0631\u0627\u062a 9.10.0 \u0625\u0644\u064a 9.10.2-P2<\/p>\n

\u062a\u0645 \u0625\u0635\u062f\u0627\u0631\u00a0\u0627\u0644\u062a\u0631\u0642\u064a\u0639 \u0644\u0644\u062b\u063a\u0631\u0629 \u0641\u064a \u0643\u0627\u0641\u0629 \u0627\u0644\u062a\u0648\u0632\u064a\u0639\u0627\u062a \u0648\u0644\u0643\u0646 \u0641\u064a \u0627\u0644\u062a\u0648\u0632\u064a\u0639\u0629 CentOS 6 \u0645\u0627\u0632\u0627\u0644 \u0644\u0645 \u064a\u062a\u0645 \u0625\u0635\u062f\u0627\u0631\u0647 \u0646\u0638\u0631\u0627\u064b \u0644\u0623\u0646 CentOS \u062a\u0642\u0648\u0645 \u0628\u062a\u062d\u062f\u064a\u062b \u0627\u0644\u0625\u0635\u062f\u0627\u0631 6.6 \u0625\u0644\u064a 6.7 (\u0648\u0627\u0644\u0630\u064a \u062a\u0645 \u062a\u0631\u0642\u064a\u0639 \u0627\u0644\u062b\u063a\u0631\u0629 \u0628\u0647) \u0645\u0645\u0627 \u064a\u062c\u0639\u0644\u0647\u0645 \u063a\u064a\u0631 \u0642\u0627\u062f\u0631\u064a\u0646 \u0639\u0644\u064a \u062a\u062d\u062f\u064a\u062b \u0623\u064a Packages \u0641\u064a \u0627\u0644\u0648\u0642\u062a \u0627\u0644\u062d\u0627\u0644\u064a \u0644\u0644\u0625\u0635\u062f\u0627\u0631 6.6<\/p>\n

\u0648\u0644\u0643\u0646 \u0647\u0646\u0627\u0643 Workaround \u0642\u0645\u062a \u0628\u0639\u0645\u0644\u0647 \u062d\u062a\u064a \u064a\u062a\u0633\u0646\u064a \u0644\u0646\u0627 \u062a\u0631\u0642\u064a\u0639 \u0627\u0644\u062b\u063a\u0631\u0629 \u0639\u0644\u064a \u0627\u0644\u0625\u0635\u062f\u0627\u0631 6.6 \u0648\u0647\u0648 \u0639\u0646 \u0637\u0631\u064a\u0642 \u0625\u0636\u0627\u0641\u0629 Repo \u062a\u064f\u0633\u0645\u064a\u00a0The Continuous Release (CR), \u0647\u0630\u0647 \u0627\u0644\u0640Repo \u064a\u0648\u062c\u062f \u0628\u0647\u0627 \u0643\u0627\u0641\u0629 \u0627\u0644\u0640Packages \u0627\u0644\u062a\u064a \u0633\u0648\u0641 \u064a\u062a\u0645 \u0625\u0635\u062f\u0627\u0631\u0647\u0627 \u0641\u064a \u0627\u0644\u0625\u0635\u062f\u0627\u0631 \u0627\u0644\u0642\u0627\u062f\u0645 \u0645\u0646 CentOS \u0648\u0647\u0648 CentOS 6.7<\/p>\n

 <\/p>\n

\u0627\u0644\u062a\u0631\u0642\u064a\u0639 \u0644\u0640CentOS 5, CentOS 7:<\/p>\n

yum update bind -y\r\n\/etc\/init.d\/named restart<\/pre>\n
\u0627\u0644\u062a\u0631\u0642\u064a\u0639 \u0644\u0640CentOS 6:<\/p>\n
yum install centos-release-cr -y\r\nyum update bind -y\r\n\/etc\/init.d\/named restart<\/pre>\n
 <\/p>\n
\u0628\u0639\u062f \u0627\u0644\u0625\u0646\u062a\u0647\u0627\u0621 \u0645\u0646 \u0639\u0645\u0644\u064a\u0629 \u0627\u0644\u062a\u0631\u0642\u064a\u0639 \u0641\u064a \u062a\u0648\u0632\u064a\u0639\u0629 CentOS 6, \u064a\u062c\u0628 \u0623\u0646 \u064a\u062a\u0645 \u062d\u0630\u0641 \u0627\u0644\u0640Repo \u062d\u062a\u064a \u0644\u0627 \u064a\u062a\u0645 \u062a\u062d\u062f\u064a\u062b \u0643\u0627\u0641\u0629 \u0627\u0644\u0640Packages \u0628\u0634\u0643\u0644 \u062a\u0644\u0642\u0627\u0626\u064a \u0645\u0645\u0627 \u064a\u062a\u0631\u0643 \u0627\u0644\u0640cPanel \u0628\u0647\u0627 \u0627\u0644\u0639\u062f\u064a\u062f \u0645\u0646 \u0627\u0644\u0645\u0634\u0627\u0643\u0644<\/p>\n
\u062d\u0630\u0641 \u0627\u0644\u0640Repo \u064a\u0643\u0648\u0646 \u0639\u0646 \u0637\u0631\u064a\u0642 \u0627\u0644\u0623\u0645\u0631 \u0627\u0644\u062a\u0627\u0644\u064a:<\/p>\n
rm -rf \/etc\/yum.repos.d\/CentOS-CR.repo<\/pre>\n
\u0648\u0628\u0647\u0630\u0627 \u0642\u062f \u064a\u0643\u0648\u0646 \u0625\u0646\u062a\u0647\u064a \u062a\u062d\u062f\u064a\u062b Bind \u0648\u062a\u0645 \u062a\u0631\u0642\u064a\u0639 \u0627\u0644\u062b\u063a\u0631\u0629<\/p>\n
 <\/p>\n
\u062a\u062c\u0631\u0628\u0629 \u0627\u0644\u062b\u063a\u0631\u0629 \u0628\u0639\u062f \u0639\u0645\u0644\u064a\u0629 \u0627\u0644\u062a\u0631\u0642\u064a\u0639 \u0643\u0627\u0646\u062a \u0643\u0627\u0644\u0622\u062a\u064a:<\/p>\n
root@xxx [~]# .\/bind-poc XXX.XXX.XXX.XXX\r\n--- PoC for CVE-2015-5477 XXXXXXXXXXXXXXXX ---\r\n[+] XXX.XXX.XXX.XXX: Resolving to IP address\r\n[+] XXX.XXX.XXX.XXX: Resolved to multiple IPs (NOTE)\r\n[+] XXX.XXX.XXX.XXX: Probing...\r\n[+] Querying version...\r\n[+] XXX.XXX.XXX.XXX: \"9.8.2rc1-RedHat-9.8.2-0.37.rc1.el6_7.2\"\r\n[+] Sending DoS packet...\r\n[+] Waiting 5-sec for response...\r\n[-] XXX.XXX.XXX.XXX: got response, so probably not vulnerable<\/strong><\/pre>\n
 <\/p>\n
\u0644\u0645\u0639\u0631\u0641\u0629 \u0625\u0630\u0627 \u0643\u0627\u0646 \u0642\u062f \u062a\u0645 \u062a\u0631\u0642\u064a\u0639 \u0627\u0644\u062b\u063a\u0631\u0629 \u0644\u062f\u064a\u0643 \u0642\u0645 \u0628\u062a\u0646\u0641\u064a\u0630 \u0627\u0644\u0623\u0645\u0631 \u0627\u0644\u062a\u0627\u0644\u064a:<\/p>\n
rpm -q --changelog bind | grep CVE-2015-5477<\/pre>\n
\u0625\u0630\u0627 \u0643\u0627\u0646\u062a \u0627\u0644\u062b\u063a\u0631\u0629 \u062a\u0645 \u062a\u0631\u0642\u064a\u0639\u0647\u0627 \u0641\u0633\u0648\u0641 \u062a\u0638\u0647\u0631 \u0627\u0644\u0646\u062a\u064a\u062c\u0629 \u0627\u0644\u062a\u0627\u0644\u064a\u0629:<\/p>\n
- Fix CVE-2015-5477<\/pre>\n
 <\/p>\n
\u0625\u0630\u0627 \u0643\u0627\u0646 \u0647\u0646\u0627\u0643 \u0623\u064a \u0625\u0633\u062a\u0641\u0633\u0627\u0631\u0627\u062a \u0623\u0648 \u0623\u0645\u0648\u0631 \u063a\u064a\u0631 \u0648\u0627\u0636\u062d\u0629 \u0623\u0648 \u062a\u0639\u0644\u064a\u0642\u0627\u062a \u0641\u0641\u0636\u0644\u0627\u064b \u062a\u0631\u0643 \u062a\u0639\u0644\u064a\u0642 \u0628\u0630\u0644\u0643<\/p>\n
 <\/p>\n
\u0645\u0635\u0627\u062f\u0631:<\/strong><\/span><\/span><\/p>\n
https:\/\/kb.isc.org\/article\/AA-01272<\/a>
\nhttp:\/\/wiki.centos.org\/AdditionalResources\/Repositories\/CR<\/a>
\nhttps:\/\/www.isc.org\/blogs\/about-cve-2015-5477-an-error-in-handling-tkey-queries-can-cause-named-to-exit-with-a-require-assertion-failure\/<\/a><\/p>\n
 <\/p>\n
\u0627\u0644\u0645\u0635\u062f\u0631 – \u0645\u062f\u0648\u0646\u0629 \u0645\u0648\u062f \u0633\u064a\u0631\u0641<\/a><\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"
\u0628\u0633\u0645 \u0627\u0644\u0644\u0647 \u0627\u0644\u0631\u062d\u0645\u0646 \u0627\u0644\u0631\u062d\u064a\u0645 \u0638\u0647\u0631\u062a \u0645\u0646\u0630 \u0623\u064a\u0627\u0645 \u0642\u0644\u064a\u0644\u0629 \u062b\u063a\u0631\u0629 \u062e\u0637\u064a\u0631\u0629 \u0641\u064a BIND \u0627\u0644\u0645\u0633\u0626\u0648\u0644 \u0639\u0646 \u0627\u0644\u0640DNS \u0641\u064a \u0627\u0644\u0633\u064a\u0631\u0641\u0631\u0627\u062a \u0648\u0627\u0644\u062a\u064a \u062a\u062a\u064a\u062d \u0644\u0644\u0645\u062e\u062a\u0631\u0642 \u062a\u0646\u0641\u064a\u0630 \u0647\u062c\u0645\u0629 \u0645\u0646 \u0646\u0648\u0639 DoS \u0648\u0627\u0644\u062a\u064a \u062a\u0642\u0648\u0645 \u0628\u0634\u0644 \u062e\u062f\u0645\u0629 BIND \u0639\u0644\u064a \u0627\u0644\u0633\u064a\u0631\u0641\u0631 \u0627\u0644\u0645\u062e\u062a\u0631\u0642 \u0627\u0644\u062b\u063a\u0631\u0629 \u062a\u0645 \u0628\u0631\u0645\u062c\u062a\u0647\u0627 \u0628\u0644\u063a\u0629 C \u0648\u062a\u0645 \u0625\u0635\u062f\u0627\u0631 \u0646\u0633\u062e\u0629 \u0623\u062e\u0631\u064a \u0645\u0646\u0647\u0627 \u0628\u0644\u063a\u0629 Python \u062a\u0645\u00a0\u0638\u0647\u0648\u0631 \u0627\u0644\u062b\u063a\u0631\u0629 \u0645\u0646\u0630 5 \u0623\u064a\u0627\u0645 \u0648\u062a\u0645 \u0625\u0635\u062f\u0627\u0631 \u0643\u0648\u062f \u0627\u0644\u0625\u0633\u062a\u063a\u0644\u0627\u0644 PoC […]<\/p>\n","protected":false},"author":2,"featured_media":422,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"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":""},"categories":[10],"tags":[160,163,159,162,158,161],"class_list":["post-421","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-10","tag-centos","tag-repo","tag-_bind","tag-_dos","tag-_"],"yoast_head":"\n\u062b\u063a\u0631\u0629 \u062e\u0637\u064a\u0631\u0629 \u062c\u062f\u0627\u064b \u062a\u0633\u0645\u062d \u0628\u062a\u0646\u0641\u064a\u0630 \u0647\u062c\u0645\u0627\u062a DoS \u0641\u064a BIND - \u0645\u0648\u062f \u0633\u064a\u0631\u0641<\/title>\n<meta name=\"description\" content=\"\u0628\u0633\u0645 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