{"id":501,"date":"2020-12-04T05:50:21","date_gmt":"2020-12-04T05:50:21","guid":{"rendered":"http:\/\/velaninfo.com\/rs\/?post_type=techtips&p=501"},"modified":"2021-09-29T13:15:32","modified_gmt":"2021-09-29T13:15:32","slug":"dos-vulnerability-bind-dns-service","status":"publish","type":"techtips","link":"https:\/\/www.velaninfo.com\/rs\/techtips\/dos-vulnerability-bind-dns-service\/","title":{"rendered":"How to fix for DoS vulnerability in BIND DNS service?"},"content":{"rendered":"

BIND DNS servers versions 9.1.0 to 9.9.7-P1 and 9.10.2-P2 allow a remote attacker to exploit an error in handling TKEY queries to launch a Denial of Service DoS vulnerability in BIND DNS service, server crashing.<\/p>\n

You should consider patching if the cPanel\/WHM, Odin Plesk, or DirectAdmin servers are not patched.<\/p>\n

There is no workaround to bypass this vulnerability. The only solution is to apply the patch to fix it. All major Linux vendors have already released patches for this vulnerability.<\/p>\n

RedHat and CentOS Servers<\/strong><\/a><\/p>\n

Run the below command<\/p>\n

# yum update bind<\/p>\n

Enable Continuous Release (CR) Repository to get this patch. To Install and enable CR repo and update the BIND, the following commands need to be executed \u2013<\/p>\n

# yum install centos-release-cr<\/p>\n

# yum-config-manager –enable cr<\/p>\n

# yum update bind<\/p>\n

To disable the CR repo, execute the following command<\/p>\n

# yum-config-manager –disable cr<\/p>\n

Debian and Ubuntu Servers<\/strong><\/p>\n

# apt-get install bind9<\/p>\n

OpenSUSE servers<\/strong><\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/strong># zypper update bind<\/p>\n

If you are unable to run a normal package upgrade in cPanel\/WHM, Odin Plesk or DirectAdmin servers, you need to custom compile BIND to the latest version<\/p>\n

At Velan<\/a>, our server support engineers can help you fix DoS vulnerability in BIND DNS service issue. For details, please visit Managed IT Support Services<\/strong><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

BIND DNS servers versions 9.1.0 to 9.9.7-P1 and 9.10.2-P2 allow a remote attacker to exploit an error in handling TKEY queries to launch a Denial of Service DoS vulnerability in BIND DNS service, server crashing. You should consider patching if the cPanel\/WHM, Odin Plesk, or DirectAdmin servers are not patched. There is no workaround to… Continue Reading \"Continue<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","template":"","meta":{"footnotes":""},"tags":[],"class_list":["post-501","techtips","type-techtips","status-publish","hentry","Categories_tech_tip-linux","Categories_tech_tip-security","Categories_tech_tip-server"],"yoast_head":"\nDoS vulnerability in BIND DNS service | How to fix - Velan<\/title>\n<meta name=\"description\" content=\"Steps to fix DoS vulnerability in BIND DNS Service. Velan offers Remote Server Support Services. 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