Debian Long Term Support / LTS Security Information / 2022 / Security Information -- DLA-2955-1 bind9

Debian Security Advisory

DLA-2955-1 bind9 -- LTS security update

Date Reported:

19 Mar 2022

Affected Packages:

bind9

Vulnerable:

Yes

Security database references:

In Mitre's CVE dictionary: CVE-2021-25220.

More information:

It was found that bind9, an internet domain name server, was vulnerable to cache poisoning. When using forwarders, bogus NS records supplied by, or via, those forwarders may be cached and used by named if it needs to recurse for any reason, causing it to obtain and pass on potentially incorrect answers.

For Debian 9 stretch, this problem has been fixed in version 1:9.10.3.dfsg.P4-12.3+deb9u11.

We recommend that you upgrade your bind9 packages.

For the detailed security status of bind9 please refer to its security tracker page at: https://security-tracker.debian.org/tracker/bind9

Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: https://wiki.debian.org/LTS