A bind9 security update has been released for Debian GNU/Linux 8 Extended LTS to address an issue that could result to cache poisoning.
ELA-584-1 bind9 security update
Package bind9
ELA-584-1 bind9 security update
Version 1:9.9.5.dfsg-9+deb8u24
Related CVEs CVE-2021-25220
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 8 jessie, these problems have been fixed in version 1:9.9.5.dfsg-9+deb8u24.
We recommend that you upgrade your bind9 packages.
Further information about Extended LTS security advisories can be found at: https://deb.freexian.com/extended-lts/
