==========================================================================
\nUbuntu Security Notice USN-6642-1
\nFebruary 19, 2024<\/p>\n
bind9 vulnerabilities
\n==========================================================================<\/p>\n
A security issue affects these releases of Ubuntu and its derivatives:<\/p>\n
– Ubuntu 20.04 LTS<\/p>\n
Summary:<\/p>\n
Several security issues were fixed in Bind.<\/p>\n
Software Description:
\n– bind9: Internet Domain Name Server<\/p>\n
Details:<\/p>\n
Shoham Danino, Anat Bremler-Barr, Yehuda Afek, and Yuval Shavitt discovered
\nthat Bind incorrectly handled parsing large DNS messages. A remote attacker
\ncould possibly use this issue to cause Bind to consume resources, leading
\nto a denial of service. (CVE-2023-4408)<\/p>\n
Elias Heftrig, Haya Schulmann, Niklas Vogel, and Michael Waidner discovered
\nthat Bind icorrectly handled validating DNSSEC messages. A remote attacker
\ncould possibly use this issue to cause Bind to consume resources, leading
\nto a denial of service. (CVE-2023-50387)<\/p>\n
It was discovered that Bind incorrectly handled preparing an NSEC3 closest
\nencloser proof. A remote attacker could possibly use this issue to cause
\nBind to consume resources, leading to a denial of service. (CVE-2023-50868)<\/p>\n
It was discovered that Bind incorrectly handled reverse zone queries when
\nnxdomain-redirect is enabled. A remote attacker could possibly use this
\nissue to cause Bind to crash, leading to a denial of service.
\n(CVE-2023-5517)<\/p>\n
It was discovered that Bind incorrectly handled certain specific recursive
\nquery patterns. A remote attacker could possibly use this issue to cause
\nBind to consume memory, leading to a denial of service. (CVE-2023-6516)<\/p>\n
Bind has been updated to 9.6.48. In addition to security fixes, the updated
\npackages contain bug fixes, new features, and possibly incompatible
\nchanges.<\/p>\n
Please see the following for more information:
\nhttps:\/\/downloads.isc.org\/isc\/bind9\/9.16.48\/doc\/arm\/html\/notes.html<\/p>\n
Update instructions:<\/p>\n
The problem can be corrected by updating your system to the following
\npackage versions:<\/p>\n
Ubuntu 20.04 LTS:
\nbind9 1:9.16.48-0ubuntu0.20.04.1<\/p>\n
This update uses a new upstream release, which includes additional bug
\nfixes. In general, a standard system update will make all the necessary
\nchanges.<\/p>\n
References:
\nhttps:\/\/ubuntu.com\/security\/notices\/USN-6642-1
\nCVE-2023-4408, CVE-2023-50387, CVE-2023-50868, CVE-2023-5517,
\nCVE-2023-6516<\/p>\n
Package Information:
\nhttps:\/\/launchpad.net\/ubuntu\/+source\/bind9\/1:9.16.48-0ubuntu0.20.04.1<\/p>\n","protected":false},"excerpt":{"rendered":"
========================================================================== Ubuntu Security Notice USN-6642-1 February 19, 2024 bind9 vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: – Ubuntu 20.04 LTS Summary: Several security issues were fixed in Bind. Software Description: – bind9: Internet Domain Name Server Details: Shoham Danino, Anat Bremler-Barr, Yehuda Afek, and Yuval Shavitt discovered that Bind …<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[26],"tags":[],"class_list":["post-54568","post","type-post","status-publish","format-standard","hentry","category-vulnerability"],"_links":{"self":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/54568","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/comments?post=54568"}],"version-history":[{"count":1,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/54568\/revisions"}],"predecessor-version":[{"id":54613,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/54568\/revisions\/54613"}],"wp:attachment":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/media?parent=54568"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/categories?post=54568"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/tags?post=54568"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}